Notes on Neotropical Malpighiaceae-IX

2007·9.9 MB·English

by  William Anderson

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Contr.Univ.MichiganHerix25:95-111.2007.
NOTESONNEOTROPICALMALPIGHIACEAE—IX
WilliamR.Anderson
UniversityofMichiganHerbarium
3600VarsityDrive
AnnArbor,Michigan48108-2287
Abstract. Sixnewspeciese^fneotropicalMalpighiaceaearcnamedanddescribed{Banisleriopsis
macedaeW.R.Anderson,ByisonimalioineieriW.R.Anderson,HeleroptcryscolonihianaW.R.Anderson,
MascagniaalmedcieW.R.Anderson,MascagniacunfurtnisW.R.Anderson,andll'tnipterysluitansW.R.
Anderson),andtwonewcombinationsareproposed{Mascagniaallopterys(Moris)W.R.Andersonand
Mascagniabierosa(Adr,.luss.)W.R.Anderson).
AlthoughmycolleaguesandIhavedescribedmanynewspeciesofMalpighia-
ceaeoverthelast32years,wecontinuetoencounteradditionalnoveltiesaswestudy
problematicgroupsandnewlyreceivedgiftsandloans.Thispaperdealswithafew
ofthoseadditionstothefloraoftheneotropics.
BanisteriopsismacedaeW.R.Anderson,sp.nov. Type:Peru.MadredeDios:Manu
Province,PuertoMaldonado,LosAmigosBiologicalStation,MadredeDios
River,ca.7kmuprivcrfrommouthofRioLosAmigos,orillasdelRfoLos
Amigos.19May2004n./l.P.Maceda1391(holotype:MICH!).
Liana lignosa,caulibus sericeis;lamina foliorum majorum 9.5-11.5 cm longa.
3.7^.5cmlata,apiceacuminata,abaxialitersparsimsericeautrinque 1-3(4)glan-
dulis peltatis instructa;petiolus 8-10 mm longus,sericeus. eglandulosus;bracteae
bracteolaeque caducae; petala cremea, fimbriata; petalum posticum ungue apice
constricto;antheraeloculispiliferis,5anticaeconnectivoglanduloso-tumido(prae-
cipue3sepalisanticisoppositae),5posticaeconnectivoloculosnonvelvixsuperanti,
antherapetaloposticooppositarudimentariavelnulla;nuxsamaraealiquotalulis
lateralibusinstructa.
Woodyvine;stemsdenselyandpersistentlysericeouswithlong,whitish,strongly
appressedhairs,glabrescentinage.Laminaoflargerleaves9.5-11.5cmlong,3.7^.5
cmwide,ellipticalorwidestslightlyabovethemiddle,cuneateatbase,long-acumi-
nate at apexwith theacumen 1-1.5cmlong,initiallylooselysericeous above but
soonglabrateexceptoftenpersistentlysericeousonmidribandsometimesonmajor
lateralveins,thinlybutpersistentlysericeousbelowwiththehairsdenseonmidrib
andlateralveins,bearing1-3(4)peltateglandsbelowoneachsidebetweenmidrib
andmarginonlateralveinsinproximal2/3,theprincipallateralveins5-7oneach
sideofmidrib,thecross-veinsstronglyscalariform;petiole8-10mm long,densely
andpersistentlysericeous,eglandular;stipulesinterpetiolar,distinct,0.3-0.5mmlong,
triangularorrounded,often hiddenbyhairsonstem. Inflorescencesterminaland
lateral,paniculatewiththeflowersinumbelsof4(-6),theaxesdenselyandpersis-
tentlylooselysericeousortomentose;bractsandbracteoles 1-1.5mmlong.0.7-0.9
mmwide,triangularorovate,abaxiallydenselytomentose,adaxiallyglabrous,cadu-
cous(mostlyfallingbeforeanthesis);peduncle0-1 mmlong;pedicel6-9mmlong,
denselysericeousorappressed-tomentose.Sepals3-4 mm long,2.5-3.5 mm wide,
elongate-triangularwiththeapexobtuse,distallyreflexedinbudandopenflower,
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denselypiloseortomentoseonbothsides,all5biglandularwiththeglandsborneon
freepartofsepal,theglandson4lateralsepals2mmlong,thoseonanteriorsepal
mm
1-1.3 long. Petals cream-colored,glabrous;lateral petals reflexed,theclaw2
mmlong,thelimb4.5-6mmlongandwide,deeplycup-shaped,fimbriate(especially
the posterior-lateral pair) with the limbriae eglandular;posterior petal erect,the
claw2.5mmlong,verybroadandthick,constrictedatapex,thelimb5-6mmlong,
5mmwide,ovate,flatorshallowlvconcave,long-hmbriatewiththefimbriaegland-
tipped,especiallythoseonproximal halfoflimb.Stamensstronglyheteromorphic,
thefilamentsglabrousandconnateinproximal 1/4 1/2,theantherloculesbearinga
fewhairsatapexandoftenatbaseaswell;stamensopposite3anteriorsepalswith
filament 1.5-2.5mmlong,theantherwithlocules1 mmlongandconnectivedistally
enormouslyglandular-swollen,overtoppingloculesby 1-1.5mm;stamensopposite
anterior-lateralpetalswithfilament 1.5mmlong,theantherwithlocules 1 mmlong
andconnectivedistallysomewhatglandular-swollen,overtoppingloculesby0.7mm;
stamens oppositeposteriordateral petalswith filament2-2.5 mm long,the anther
withlocules0.8mmlongandconnectivenotswollenandnotorhardlyexceeding
locules;stamens opposite posterior-lateral sepals with filament 2.5 mm long, the
antherwithlocules0.3-0.5mm longandconnectivenotswollenandnotorhardly
exceedinglocules;stamenoppositeposteriorpetalwithfilament2-2.3mmlong,the
antherlackingorrepresentedbyarudimentaryconnectiveca.0.3mmlong,without
loculesorbearingminute(sterile?)locules.Ovary 1-1.5mmhigh,denselyhirsute;
styleshirsuteonproximal 1/2-2/3,distallytaperedtoverysmalltruncateorslightly
capitateapicalstigmas;anteriorstyle2.2-2.5mmlong,bowedbacktowardanterior
sepal;posteriorstyles3-3.3mmlong,thickenedinproximalhalf,bowedtowardpos-
teriorpetal.Samarapersistentlysericeous,35-45 mmlong;dorsalwing28-40mm
long,13-18mmwide;nutca.5-7mmindiameter,glabrousinsidelocule,bearingon
bothsidesseveralwinglels2-7mmhigh,thesemostlyparalleltoventralareoleand
imbricated but some (the smallest,outermost winglets) sometimesradiatingfrom
areole;carpophoreshortandbroad(ca.0.5-1mmlong,0.3-0.5mmwide),probably
non-functional;ventralareole3-3.5mmlong,2-2.5mmwide,ovate.
Additionai.CoLLEcriONSExamined.Peru.Madredi;Dios:ManuPi\)vincc.Ri'oAmigucllos.AugIV.
Mamlaelill.1533(BRIT);CochaCashu,400m,Octfr,Nunez1926(F).
ThisspeciesisnamedforAbelPiherMacedaChuan(b.1973),whocollectedthe
holotypeandoneoftheparatypes.
Banisteriopsismacedaecanbecomparedtootherspeciesofthegenusonthefol-
lowingbases:petioleseglandular,leafglandspeltate,bractsandbracteolescaducous,
sepals elongated and triangular,petals cream-colored,posterior petal constricted
attheapexoftheclaw,antherspilose,andsamarawithseveralimbricatedwinglets
onthesidesofthenutandglabrousinsidethelocule.Accordingtothetreatment
byGates(1982),thosecharacteristicssuggestarelationshiptoB.adenopoda(Adr.
Juss.)B.Gates,B.membranifoHa(Adr.Juss.)B.Gates,orB.pulchraB.Gates.Bani-
steriopsisadenopoda,aspeciesofsoutheasternBrazil,iseliminatedbythefactthatits
laminaisvelutinousonbothsurfaces.Banisteriopsisinendiranifolia,anotherspecies
ofsoutheasternBrazil,hasglandsonthepetiole,roundedsepals,andtheposterior
petal withoutaconstriction attheapexofthe claw.Banisteriopsispulchraagrees
with B.macedaeinhavingpeltateleafglands,deciduousbractsandbracteoles,the
posteriorpetalconstrictedattheapexoftheclaw,piloseanthers,andthesamarawith
well-developedlateralwingletsonthenut.Moreover,itoccursasfarwestasBolivia,
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2007 W.R.ANDERSON:NOTESONNEOTROPICALMALPIGHIACEAE—IX 97
comingclosertosouthernPeruthananyothercloserelativeofB.macedae.B.pul-
chravar.pidchrahasthepetiolebiglandularattheapex,thebractsandbracteoles
persistlongerthaninB.macedae,thepetalsarepink,andtheleavesareverydensely
sericeousbelow.InB.pidchravar.glabrataB.Gates(knownonlyfromasinglecol-
lectionfromLaPazProvince,Bolivia)thelaminaisglabratebelow,morehkethe
thinlysericeouslaminaofB.macedae,butGatesdescribeditashavingpinkpetals,
notthecream-coloredpetalsofB.macedae,whichalsodiffersinhavingallthreeof
theposterioranthersmuchreduced.Indeed,inthetypeofB.macedae(theonlycol-
lectionseenwithflowers),theantheroppositetheposteriorpetalisrudimentaryor
lacking.Banisteriopsismacedaeisalsonotableforhavingsmallglandsontheanterior
sepal.WhenmorecollectionsareknownfromwesternBoliviaandsouthernPeruit
maybecomenecessarytocombineB.macedaeandB.pidchravar.glabrata,butif
sotheformernameshouldbeadopted;Iamsatisfiedthattheplantdescribedhere
deservesspeciesstatus.
ByrsonimahomeieriW.R.Anderson,sp.nov. Type.Ecuador.Zamora-Chinchipe:
areaoftheEstacionCientificaSanFrancisco,roadLoja-Zamora,ca.35km
fromLoja,03°58'S,79°04'W,montanetropicalforest,1880m,26Aug2005
fl,Homeier1566(holotype:MICH!;isotypes:AAU!GOET,K!LOJA,MO,
NY!QCNE). Fig.1.
Arbor7-12malta;laminafoliorummajorum12.5-19cmlonga,5.5-9.2cmlata,
coriacea,moxglabrata;petiolus13-25mmlongus;stipulaeomninoconnatae,3-5mm
longae;bracteaebracteolaeque0.5-1.3mmlongaelataeque,±persistentes;pedicel-
lus8-10mmlongus(fructuusquead17mm),crassus,rectusinalabastrofructuque;
sepalaluteaaetaterubra,infructuaccrescentia;petalalutea:antheraeglabrae,1.7-1.9
mm longae,loculisconnectivo nonvelvix (usque ad0.1 mm) superatis;ovarium
mm
sparsimsericeum;styli2.2 longi,recti.
Tree7-12mtall;stemsinitiallysericeousbutsoonglabrescenttoglabrate.Lam-
inaoflargerleaves 12.5-19cmlong,5.5-9.2cmwide,ellipticalorobovate,cuneate
orgraduallynarrowedatbase,obtuseorroundedatapex,coriaceous,initiallythinly
sericeousbutatmaturityglabrateorwithafewappressedhairsonabaxialmidrib,
the7-10pairsoflateralveins± prominent,thereticulum visibleonbothsidesin
driedleaves;petiole13-25mmlong,sparselysericeoustoglabrate;stipulesofeach
intrapetiolarpaircompletelyandsmoothlyconnate,thepairtriangular,3-5mmlong,
abaxiallysparselysericeous(?)toglabrate,adaxiallyglabrousexceptatverybase.
Inflorescence 11-21cmlong,tightlybrown-sericeoustoglabrescentinage;flowers
borne 1 perbract(aminute second budoftenpresentbutnotdeveloped);bracts
andbracteoles 0.5-1.3 mm long and wide,ovate or triangular,sparselysericeous
orglabrate,mostlypersistentthroughmaturationoffruit,thereafterpersistentor
deciduous;peduncleabsentorupto0.7mmlong;pedicel8-10mmlonginflower,
upto17mmlonginfruit,±persistentlysericeous,oftenrelativelythick,straightin
budandfruit,turningredin age.Sepalsyellowturningredinage, 1.5-2mmlong
beyond glands,2.5-3 mm wide,broadly triangularwith obtuse or rounded apex,
appressed,abaxiallythinlysericeous,adaxiallyglabrous,accrescenttoca.4-5 mm
longand5-6mmwideinfruit,allbiglandular,theglandsyellow,2.8-3.2mmlong,
obovate.Petalsyellow,glabrous;lateralpetalsspreadingorreflexed,theclaw2-2.5
mmlong,thehmb4.5-5.5mmlong,4-6mmwide,cordate,deeplycupshaped,erose
ordenticulate;posteriorpetalerect,theclaw2.5mmlong,thick,thelimb3.5mm
mm
longandwide,broadlysagittate,corrugated,erose.Filaments1.8-2 long,abaxially
98 CX)NIR.UNIVERSITYOFMICHIGANHERBARIUM VOLUME25
FIG. 1.Bvrsonimahonieicii. a.FUiweringbranch,b.Nodewithconnateinlrapetiolarstipules,c.
Lamina,adaxialsurlaco.d.Portionol'inflorescencewithtwollowerbuds.e.Flower,posteriorpetalup-
permost,f.Stamen,lateral\icu.g.Gynoecium.h.Fruits,drawnfromaphototakenbeforespecimenwas
dried,i.Driedfruit.Scalebarequivalents:a.4cm;b,8mm;c,4mm;d.e.8mm;f.g,2.7mm;h.4em;i.8mm.
(Basedon:a-g,Uonicicr1566,MICII;h,llonicier1053,MK^H;i,Ncill12M1.M\Cn.)
glabfous,adaxiallyhifsutcalbase;anthersglabrous.1.7-1.9mmlong,subeqaal.the
ioculeslinear,notalate,roundedandattachedatapex,notorhardly(upto0.1 mm)
eulxecseefedretidleb;ystcyolnense2c.t2ivmematlaopnegx,.stOrvaaigrhyt.1.F5rumitmyehlilgohw,,vgelraybrtohuisn,lywsietrhicbeaosuess,aolfls3tyIloecs-
formingapicalbeaks,roughlyglobose(somewhatdepressedtosomewhatelongated),
18-23mmindiameterbeforedrying,12-20mmindiameterafterdrying,thestone
withprominentswellings.
Distribution. Known only from montane tropical forest at 1880-2600 m in
Zamora-Chinchipe,Ecuador[Rubioetal.2256wasreportedascomingfrom Loja
Province,butwithexactlythesamegeographicalcoordinatesasalltheothercollec-
tions,whichtheircollectorslabeledascomingfromZamora-ChinchipeProvinceJ.
AddiiionalColli(iioNsExamined.Ecuador.Zamdra-Ciiimhum,sameapproximatelocalityas
type:OctH,llomeier551(MICH).Marfr.Hoineicr1053(MICH),Aprtr,Ncill12631.12632.12633{i\\\
MICH),Decfr,Ruhioetal.2256(MICH).Homeier551andJ053werecollectedfromthesametreeas
thetype,llomeier1566.
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2007 W.R.ANDERSON:NOTESONNEOTROPICALMALPIGHIACEAE—IX 99
ByrsonimahomeieriisnamedinhonorofDr.JlirgenHomeier(b.1968),aplant
ecologistattheUniversityofGottingenwhohascollecteditseveraltimesduringhis
studiesintheSanFranciscoreserveinEcuador.
TherelationshipsofByrsonimahomeieriaretobesoughtamongotherspecies
withyellowpetals,smoothlyconnatestipules,andantherswiththeconnectivenot
orhardlyexceedingthelocules,ofwhichtherearemany.Noneofthem,however,
hasthecombinationofcharacteristicsthatsetsthisspeciesapart:thick,stiff,nearly
glabrousleaves;veryshort,similar,persistentbractsandbracteoles;stout,straight
pedicelsthatturnredinageandremainstraightinfruit;sepalsturningredinage
andaccrescentinfruit;andcompletelyglabrousanthers.Thepedicelsareespeciahy
notable,becausemostyehow-fioweredspeciesofByrsonimahaveslenderpedicels
thatareoftencircinateinbudanddecurvedinfruit.Thespeciesmostcloselyrelated
toB.homeierimaybeB.hypoleucaTurcz.,atreeofmontaneVenezuelaandColom-
bia.Ithassimilarstipules,straightpedicels,yellowpetals,andantherswithshortcon-
nectives,butdiffersinhavingtheleavesdenselyandpersistentlysericeousbelow,the
bractslong,narrow,anddeciduous,andtheantherssparselysericeous.
HeteropteryscolombianaW.R.Anderson,sp.nov. Type.Colombia.Cesar:12km
NofCodazzi,edgeofdryforest,5Sep1938fl,Haught2321(holotype:MO!;
isotypes:CAS!NY!US).
Frutex2m altus,caulibusdensevelutinis;laminasupraverrucosaetvelutina
demumglabrescens,subtus dense etpertinacitertomentosa,basi biglandulosa et
interdum 2 glandulis minoribus super basim instructa;inflorescentia dense velu-
tina,floribusinumbelhsvelcorymbis(2-)4-6(-8)-florisportatis;bracteolaeprope
mediumpedunculiportatae;petalalutea,glabra;styh1.4-2.3mmlongi,apicedor-
salitertruncati.
Shrubca.2mtah,describedbyCuatrecasasas"±tortuoso,bejucoso"[±twisted,
vinelike];stemsinitiallydenselyvelutinouswiththeferrugineoushairsfadinginage,
long-persistentbutabradedfromolderstems(afterthefirstyear?);punctiformlenti-
celssoondevelopedandprominent.Largestleaves,remotefrominflorescence(only
1seen),withlamina14.7cmlong,8.5cmwide,broadlyelliptical,roundedatbase,
obtuseatapex,thepetiole4mmlong;largerleavesonfloweringstemswithlamina
5-10cmlong,3-5.5cmwide,elliptical,cuneateorroundedatbase,acute,abruptly
acuminate,orobtuseatapex,velutinousabovewithbroadlyV-shapedhairstobelat-
edlyglabrescent,verrucose,denselyandpersistentlytomentosebelow,thehairswith
averyshortstalk andalong (0.8-1.6mm)straightorsinuouscrosspiece,usually
bgelaarnidngso1mleawrgheatglaanbdovoenebaacshesbiedetwoefemnidmriidbriatbbaansedamnadrgsionm;etpietmieoslean3o-t4hemrmsmallolnegr,
eglandular(rarelybiglandularwhenglandsfromlaminaaredisplaceddownward);
stipuleslackingor0.4-0.7mmlong,triangular,borneonbaseofpetiole.Inflorescence
elongated, paniculate, ferrugineous-velutinous throughout,with the short, dense
branchesborneinaxilsofprogressivelysmallerleaves,theflowersborneultimately
inumbelsortightcorymbsof(2-)4-6(-8),onastalk3-10mmlong;bracts1-2mm
long,0.6-1mmwide,narrowlyelliptical,eglandular,abaxiallytomentose,adaxially
glabrous;peduncle1.5-4mmlong;bracteoleslikebractsbutshorter(0.6-1mmlong),
borneatorsomewhatabovemiddleofpeduncle;pedicel2.5-4mmlong,aslongas
peduncleorlonger.Sepals1.5-2mmlongbeyondglands,1.3-1.7mmwide,elliptical
orovatewiththeapexobtuseorbroadlyrounded,appressedinanthesis,abaxially
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100 CONTR.UNIVERSITYOFMICHIGANHERBARIUM VOLUME25
denselyappresscd-tomentosewithferrugincoushairs,adaxiallyglabrous,theanterior
eglandular.thelateral4biglandularwith theglands 1.5-2 mmlong.Petalsyellow,
glabrous,abaxiallysmooth(i.e.,notcarinateorwinged);lateralpetalsspreadingor
rellexed,theclaw1.2-1.8mmlong,thelimb3-3.8mmlong,2.5-3.2mmwide,obovate
orrectangular,concaveorOatwiththemarginoftenrevolute,erose;posteriorpetal
similartolateralpetalsbuterect,withalonger(1.5-2.5mm)thickerclaw.Stamens
glabrous;filaments2-3mmlong,longestoppositesepalsandposterior-lateralpet-
als,connateinproximalhalf,straightexceptthe2oppositeposterior-lateralsepals
bentsidewaysawayfromposteriorpetal;anthers0.9--1.2mmlong,subsimilar,the
connectiveuniformlydarkredordistallyyellow.Ovary1.5mmhigh,denselyhirsute;
mm
styles1.4-2.3 long,similarbuttheanteriorslightlyshorterandslendererthanthe
posterior2,hirsuteonproximalhalf,nearlystraightbuttheanteriorleaningtoward
posteriorpetalandtheposterior2diverging,tereteorlaterallyflattened,dorsally
truncateatapex,thestigmainternal.Fruitunknown.
Distribution.KnownonlyfromCesar,Colombia,onthelowerwesternslopesof
theCordilleraOriental.[TheNYsheetofHaiight232/bearsaprintedlabelstating
thatitcamefromLosLlanos,Meta,butthatisclearlytheresultofaclericalerror,
because thetypedinformation on the specimenstates thatitcame from north of
Codazzi,whichwasformerlyinMagdalenaandisnowinCesar;theCASandMO
sheetshavethesametypedinformation,plusaprintedlabelforMagdalena.]
AnuirioNAi.CollectionsExaminld.Colombia.Ci:sar:LaJagua,MagdalenaValley,forest,Sepfl.
AlienhH5(MO):CordilleraOriental,vertienteoccidenlal.QuebradadelGobernador(afluentedelRio
IVralonso),carreleradeSanMartinaOcaiia,Km21-22,700m,SepH,Cuatrecasas&Rodriguez2796b
(K);Aguaeliica,.SIK)ft[240m],.S'(7////;;265(G).
Thisspecies,whichisnamedforthecountrywhereitisendemic,wastreatedby
Cuatrecasas(1958)asHeteropterystomentosaAdr.Juss.,aspeciesofsouth-central
Brazil,Paraguay,and adjacent Bolivia.The Colombian plants are certainly refer-
abletothecomplexofspeciescontainingH.tomenlosa,buttheymostresembleH.
falciferaAdr.Juss.,averysimilarspeciesknownonlyfromBolivia.Thelatterdiffers
fromli.colonihianainhavingamoretwininghabit,leavessmooth(notverrucose)
above,amoreopeninflorescence,andthestemsandinflorescencelessexuberantly
hairy.ItremainstobeseenwhetherH.colombianawillmaintainitsdistinctnesswhen
thecomplexisbetterknown,especiallyfromPeruvianpopulations.
Mascagnia allopterys (Moris) W. R. Anderson,comb. nov. Tetrapterys allopterys
Moris,Piantamalpigh.4.1848. TyphiColombia.Bolivar:Mompos,Bertero
in 1820(leclotype,designatedhere,thespecimeninfruit:TO).
Mascagnia tenuis Cuatrec, Webbia 13: 371. 1958. Type: Colomi^ia. Cesar
["Magdalena"]: Gamarra, Rio Magdalena,Fosberg21399(holotype:US!;
isotype:NY!).
ThisspeciesofMascagniaisendemictoBolivarandadjacentCesarinnorthern
Colombia.It is immediatelyrecognizable in fruitbecausethelateralwingsofthe
samara are mostly dissected irregularly into 3-5 narrowly rectangular segments,
whilethelargedorsalcrestisentireandextendedbeyondthenut(especiallyatthe
apex)likeaprow.Inhisprotologue,Moris(1848)providedathoroughdescription
andexcellentillustration,whichleavemeinnodoubtastotheidentityofhisplant,
eventhough1havenotseeneitherofhissyntypes(thesecondsyntypewasaflowering
specimen,alsocollectedbyBerteroin1820atMompos).Niedenzu(1928,p.217)never
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2007 W.R.ANDERSON:NOTESONNEOTROPICALMALPIGHIACEAE—IX 101
'7'
FIG.2.Mascagniaalmedae.a.Leaf,adaxialview.b.Enlargementofadaxialleafsurface,c.Gynoecium,
anteriorstyleincenter,d.Apexofposteriorstyle,e.Samara,abaxialview.Scalebarequivalents:a,4cm;b,
5mm;c,4mm;d,1.3mm:e,1.3cm.(Basedon:a,b.e,Bieedlnve&Almeda56949,MICH;c.d.Breedlove
48675M\CH.)
sawSpecimensofthisspeciesandcitedMoris'snameamonghis"Speciesincertae
mihiinvisae"ofTetrapterys.Cuatrecasas(1958)didnotmentiontheMorisnameor
publication.IfhehadeverseenMoris'sillustrationhesurelywouldhavetakenup
hisnameandmadethecombinationinMascagniainsteadofdescribingtheplant
againasM.tenuis.
MascagniaalmedaeW.R.Anderson,sp.nov. Type:Mexico.Chiapas:Mun.Angel
AlbinoCorzo,aboveFincaCuxtepec,montanerainforest,1380m, 10Jan
1982 fr, D. E. Breedlove & F.Almeda 56949 (holotype: MICH!; isotype:
CAS!). Fig-2.
Mascagniaevacciniifoliaeaffinis,sedcaulibussericeisvelglabratis.laminafolio-
rummajorum6-7.3cmlongaet4-4.5cmlata,stipulis0.7-1.1mmlongis,ovariodense
piloso,stylisapicedorsalitertruncatisvelbrevissimeapiculatis,etsamara2.5-3cm
latoaltoquediffert.
Woodyvine;stemstightlysericeoustoglabrateandsometimesbearingadventi-
tiousrootsinverticalrows.Laminaoflargerleaves6-7.3cmlong,4-4.5cmwide,
elliptical orsomewhatovate,roundedatbase,rounded,obtuse,orabruptlyshort-
acuminateatapex,initiallythinlysericeousbutsoonglabrate,usuallybearing 1 (2)
smallabaxialglandsoneachsideofmidribbetweenmidribandmargininproximal
1/4or1/3,theprincipallateralveins3-5oneachsideofmidrib,thereticulumpromi-
nentaboveinolderleaves;petiole6-8mmlong,sericeoustoglabrate,eglandularor
biglandularatorslightlybelowapex;stipules0.7-1.1mmlong,triangular,sericeous
orglabrate,soondeciduousand leavingprominentscars.Inflorescenceacompact
panicle2-4cmlongborneonleaflessstemsofpreviousgrowingseason,comprising
3or5umbelsorcorymbsca.1cmlong,themiddlepairofumbelsoftenreducedto1
flowereach,theotherscontaining4-10flowerseach,theaxis(includingpeduncles)
looselysericeous,glabrescentinage;bracts0.5-1 mmlong,triangular,eglandular,
pilose,persistent;peduncle2-4.5mmlong;bracteolesborneatverybaseofpeduncle,
0.5-0.7 mm long,narrowlytriangular,eglandular,pilose,persistent;pedicel 11-13
mmlong,nearlyglabrousexceptsparselysericeousatapex.Sepals1-1.5 mmlong
beyondglands,triangular,obtuseorroundedatapex,abaxiallyglabrousorwithafew
appressedhairs,ciliateonmargin,adaxiallyglabrous;glands2-2.4mmlong.Petals
pink,glabrous,abaxiallycarinateproximally,themarginoflimbentireorminutely
denticulate;lateralpetalswiththeclaw 1-1.5 mmlong,thelimb4.5-5mmlong.
—
102 CONTR.UNIVERSITYOFMICHIGANHERBARIUM VOLUME25
3.5-4mmwide,truncateatbase;posteriorpetalwiththeclawthickerthaninlateral
petalsandthelimblonger(5.5-6mm).Stamensglabrous;filamentsconnateatbase,
2-3.5 mm long,stronglyheteromorphic,longestoppositesepals,shortestopposite
posteriorpetal,thickestoppositeposterior-lateralpetals;anthers 1-1.4mmlong,±
alike.Ovary1.5mmhigh,denselypilose;stylesglabrous;anteriorstyle3-3.5mmlong,
slightlybowed,dorsallyveryslightlyapiculatcatapex;posteriorstyles3.5-4mmlong,
stronglybowedfromthebase,dorsallytruncateatapex.Samarabroadlytriangular
withroundedcorners,2.5-3cmwideandhigh;lateralwingmembranous,continuous
atbaseandapex,cleftatapexuptohalfwaytonut,nearlyglabrateatmaturity;dor-
salandventralcrestsabsent;nutinsertedwellabovecenteroflateralwing,sparsely
pilose;ventralareoleovateorelliptical,2.5-3.5mmhigh,2-3mmwide;discbelow
fruitwithits3lobesextendedupwardtoapexofamassivetorus.
Addiiionai.Coii.i-xTioNExAMiNM).IVIcxico.Chiapas:Samelocalitvastvpc,14Decfl.Ihccdlove
-/<V675(CAS,MICH).
IamhappytonamethisspeciesforFrankAlmeda(b.1946),oneofthecollectors
ofthetype,whohashadanillustriousandproductivecareerinsystematicbotany,
specializinginthefamilyMelastomataceae.Mascagniaalmedaeiscloselyrelatedto
M. vacclniifoliaNied.(Fig.3),with which itsharesat leastthree synapomorphies:
adventitiousrootson thestems,asamaracompletelydevoidofadorsalcrest,and
vertical extensionsofthediscbelowthe fruittothe topofthemassive torus.The
adventitiousrootsareuniquenotonlyinthegenus,but(sofaras1know)inthefam-
ily;Idonotknowwhetherthestemscanalsotwine,buttheadventitiousrootsare
formedon youngstems,inthesecondseason ofgrowthinM.almedae.Mascagnia
vaccmufoliadiffersfromM.almedaeinhaving±persistentlyvelutinousortomentose
stems,stipulesonly0.30.6mm long,leaveswiththe lamina2-4(O) cmlongand
1.2-3(-3.5)cmwide,theovaryglabrousorsparselypilosetosoonglabrate,thestyles
dorsallyapiculateorhookedatapex,andthesamara 1.3-2.3cmwideandhigh.
Mascagniabierosa(Adr.Juss.)W.R.Anderson,comb.nov.HiraeahierosaAdr..luss.,
Ann.Sci. Nat.Bot.,Ser.2, 13:260. 1<S40.Mascagniasepiumsubsp.hierosa
(Adr.Juss.)Griseb.inMart.,Fl.Bras.12(1):96.1858.Mascagniasepiumvar.
gtahrafaNied.,ArbeitenBot.Inst.Konigl.LyceumHosianumBraunsberg3:
7.1908. Typh:Brazil.Bahia,Blanchet(holotype:G!).
Mascagniasepiumvar.nuicrophyllaNied.,Arbeiten Bot.Inst.Konigl.Lyceum
Hosianum Braunsberg 3: 6. 1908.—Syniypes: Brazil. Minas Gerais:
Schwacke7356,10847,and11947,noneseen.
Mascagniasepiumvdr.salzmannianaNied.,ArbeitenBot.Inst.Konigl.Lyceum
HosianumBraunsberg3:6. 1908.—Type:Brazil.Bahia,Salzmann99(lec-
totype,designatedbyW. R.Anderson,2007,p.90:G!;isolectotypes:G! P!
W).
MascagnialeoniiW.R.Anderson,Contr.Univ.MichiganHerb. 19:381. 1993.—
Typl: Brazh.. Minas Gerais: Carangola, Leoni [GFJP 1213] (holotype:
GFJP!;isotype:MICH!).
Mascagniabierosaisaspeciesofeastern Brazil (Bahia,EspfritoSanto,Minas
Gerais.DistritoFederal,Goias.andSao Paulo).It isnotableforitslargeglabrate
leaves,carinatelateralpetals,andespeciallytheextraordinarilylongstipules.After
describingitasM.leonii(Anderson 1993) I realized thatJussieu haddescribedin
2007 W.R.ANDERSON:NOTESONNEOTROPICALMALPIGHIACEAE—IX 103
FIG.3.Mascagniavacciniifolia.a.Floweringandfruitingbranch,b.Adventitiousrootsonstem.
c.Nodetoshowinterpetiolarstipules,d.Abaxialsurfaceofleafe.Flowerbud.f.Flower,posteriorpetal
uppermost,g.Posteriorpetaladaxialview.h.Androeciumlaidout,adaxialview,anthersremoved,shortest
filamentoppositeposteriorpetal,i.Anthers,lateralview(left)andabaxialview(right),j.Gynoecium,ante-
rmi.orTosrtyulseaifntecrenrteerm,ovk.alApoefxmaotfuproestsearmiaorrasst.ylSec.a1l.eSabmaarraeqsu,iavbaalxeinatls:vai,e4wc(ma;bobv,e8)mamn;dca,da4xmiaml;vdi,ew5m(bme;loew,).8
mm;f,5mm;g,3.3mm;h,2.7mm;i,1.6mm;j,4mm;k,1.3mm;1,1.3cm;m,2mm.(Basedon:a-k,Ulley
5934.DUKE;I,m.Lent2527,R)
1
104 CONIR.UNIVERSITYOFMICHIGANHERBARIUM VOLUME25
1840andNiedenzuthendescribeditthreetimesasvarietiesofM.sepium{Adr.Juss.)
Griseb.Thefollowingsynopticaldescriptionisbasedonmy1993publicationplusthe
severalspecimensseensince.
2.5-6Womomdylovnigne(;bsutteomfstetnombernotkoesneoofrflnoeoasrelbyasseeriinceaogue)s,ttoosmoeonntoglsaebrtaoteg;lasbtriaptuel;espe(ti.o5l-e)
often 13-28mmlong,tomentoseorlooselysericeoustosoonglabrate,cglandular;
lamina relatively large (often 9-18 cm long,6-11.5 cm wide),broadly cuneate or
roundedatbase,initiallytomentoseorlooselysericeousonbothsidesbutsoonquite
glabrate,often coriaceous at maturity,with a discolored margin ca.0.5 mm wide,
eglandularorwithseveralglandsinanabaxialrow(butusuallynotatverybase),
usuallybiglandularnearapex;inflorescenceconsistingofunbranchedpseudoracemes
axillarytofull-sizedorreducedleavesorapanicleofseveralsuchpseudoracemes,the
flowers±crowdeddistally,theaxis(includingpedunclesandpedicels)tomentoseor
looselysericeoustosometimesglabrescent;bracts1.8-4mmlong,orlongeratbase
ofpseudoraceme;bracteolesbornefrommiddleofpeduncletonearapex,eglandular
orusually 1 ofeach pair(occasionallyboth)bearing 1 gland;pedicel longerthan,
equal to,oroccasionallyshorterthanpeduncle;petalsyellow,abaxiallycarinateor
alulate;styleserectandstraightordistallydivergent,roundedortruncatedorsally
atapex;samara tomentoseatleaston nut,continuousatbaseandapex,entireor
notchedatapex.
Mascagnia conforniis W. R. Anderson, sp. nov.—Type: Brazil. Para: Santarem,
estradaqueligaAlterdoChao,capoeirabaixa,terrenoarenoso,12Dec1978
fl/fr,Vilhena,Lobo&Ribeiro251(holotype:NY!;isotypes:MICH!NY!).
MascagniocordifoUavav.peruvianai.F.Macbr.,Publ.FieldIVlus.Nat.Hist.,Bot.
Sen,13:787.1950.—Type:Peru.Loreto:IVIishuyacu,Klii}^25(holotype?:US!;
isotype:NY!).
Mascaj^niaesduinkeisimilis,sedpetalisroseisvellilacinis(velalbis?),bracteolis
(una cujusqueparis) plerumqueglandula0.5-1 mmdiametroinstructis,etlamina
glandulisproximalibusgrandisetdistalibusminoribusinstructadiffert.
Woodyvine,rarelydescribedasashrubupto2.5mtall;stempersistentlybrown-
sericeous;laminaoflargerleaves7-16(-21)cmlong,5-10(-14.5)cmwide,ovate
orelliptical,cuneateorroundedatbase,mostlyacuminate(sometimesabruptlyso)
atapex,initiallysericeousonbothsidesbutsoonglabrescenttoglabrateaboveor
sericeousonmidrib,±persistentlysericeousbelowwiththestraightsessilestrongly
appressedhairsdenseronprincipalveinsthanbetweenthemorglabrescentinage
0b.u7t-1w.i5thmmsoimnedihaaimresteprerismisptreensts,eedspiencaibalalxyiaolnsuvrefiancse,autsuoarllsyombeewarhiantga1boovre2bagsleanodns
eachsideofmidribandusuallyseveralsimilarorsmallerglandsinadistalrow,often
withapairneartheapex,thelateralveins5-7(-9)oneachsideofmidrib;petiole
7-16(-25) mm long,persistentlysericeous,eglandular:stipules 1-2mmlong,nar-
rowlytriangular,sericeous,persistentordeciduous. Flowers bornein unbranched
pseudoracemes4-14cmlong,inaxilsoffull-sizedleaves;flowers(10-)20-60ineach
pseudoraceme,±evenlydistributedandsoonhorizontal,theaxistightlyorloosely
brown-sericeousorvelutinous;bracts 1.3-3.5mmlong,verynarrowlylinear,eglan-
dular,sericeous,persistent;peduncle3-8.5mmlong,sericeous;bracteolesborneator
somewhatbelowapexofpeduncle.0.5-1.5mmlong,narrowlytriangular,sericeous,
ptreircsiasbtaexnita,lbgoltahnedg0l.a5n-d1ulmarmorin(udsiuaamleltye)r,1 tohfeeagclahnpdasirocbceaasriionngal1lyla2rgaenbdulogcicansgieocncaelnl-y