A REVISION OF THE PSIDIUM GRANDIFOLIUM COMPLEX (MYRTACEAE)

2005·8.9 MB·English

by  Leslie R Landrum

AREVISIONOFTHEPSIDIUMGRANDIFOLIUM
COMPLEX(MYRTACEAE)
LeslieR.Landrum
SchoolofLifeSciences
ArizonaStateUniversity
Tempe,Arizona85287-4501.U.S.A.
[email protected]
ABSTRACT
ThePsidiumgrandifoliumcomplexisrevisedwithkeys,descriptions,maps,andillustrationsandis
consideredtoconsistofP.grandijolium,P.missionum,audP.austrak,thelastwiththreevarieties.
ThecornplexismainlyconfinedtoeasterninteriorSouthAmerica,rangingfromVenezuelatoAr-
gentina.Lectotypesforthefollowingtaxaarechosen:P^idiuniargenteumO.Berg,Psidiumargcntcum
varpurpureumO.Berg,Psidiumcinereumvar.grandijoliumO.Berg,Psidiumcinereumvar.
intermediumO.Berg,Psidiumgrandijoliumvar.intermediumO.Berg,PsidiummucronaiumBarb.
Rodr,exChodatetHassl.,PsidiumsericeumO.Berg,PsidiumsujjrulicosumO.Berg,Psidium
incanescensvar.ratundifoUumO.Berg.Twonewcombinationsaremade:Psidnnndustralcvar.
cir^'cntfiim(O.Berg)LandrumandPsidiumaustralevar.sujjruticosum(O.Berg)Landrum
RESUMEN
SehaccunarevisiondelcomplcjoPsidiumgrandijoliumconclaves.descripciones,mapas,e
ilustraciones.ElcomplejomcluyeP.grandijolium.P.missionum,yP.australf,laultimacontres
vanedades.ElcomplejocreceprincipalmenteenelinteriordelestedeSudAmerica,desdeVenezuela
hastaArgentina.Seseleccionanlectotiposparalossiguientestaxa:PsidiumargcnleumO.Berg,
PsidiumargenteumvarpurpureumO.Berg,Psidiumcinereumvar.grandijoliumO.Berg,Psidium
cinereumvarintermediumO.Berg,PsidiumgrandijoliumvarintermediumO.Berg,Psidium
mutronatumBarb.Rodr.exChodatetHassl.,PsidiumsericeumO.Berg,PsidiumsujjruticosumO.
Berg,PsidiumincanescensvarrotundijoliumO.Berg.Sehacenlassiguientescombinacionesnuevas:
Psidiumaustralevar.argenteum(O.Berg)LandrumyPsidiumaustralevarsu//ruticosum(O.Berg)
Landrum.
ThePsidiumgrandijoliumcomplexisagroupofsmall,fireresistantshrubsof
thegrasslands(campos)andshrubbyvegetation(cerrado)ofcentralBraziland
northeasternArgentina,Paraguay,easternBolivia,Venezuela,andGuyana.It
presentssomeofthemostdifficulttaxonomicproblemsinthegenusdueto
variationwithinspecies,apparenthybridizationbetweenspeciesinthecom-
plex,andhybridizationofP.grandijoliumandP.australewithP.guineenseSw.
Especiallyperplexingisthefactthatthereexistregionsinwhichspecieslimits
arewell-definedandotherareaswheretheybreakdown.Thespecieshavein
commonashrubbyhabit,abilitytoresproutfromundergroundstemsafterfires;
youngtwigsthatareusuallysquareor4-wingedincross-section;leafvenation
thatisusuallyeucamptodromousproximallytobrochidodromousdistallywith
apoorlydefinedmarginalvein;aplacentathatprotrudeslittleandthatiscom-
SIDA21(3):1335-1354.2005
1336 BRIT.ORG/SIDA21(3)
pletelyhidden bynumerousovulesatantlicsis;andseedsthatarerelatively
smoothandrounded.Asimilargroup,theP.sdlularceomplex(Landrum2003),
hasthesamehabitandabihtytorcsproutvigorouslyalterfires,andsmooth,
round seeds, but the twigs are not winged, the venation is entirely
brochidodromousandthepeltateplacentaisclearlyvisibleindissectionswith
oneortworowsolovulesoneachside.
CalyxstructureisoltentaxonomicallyimportantinPsidium,butintheP.
grandifoUumcomplexitisquitevariableandnotusefulindefiningthegroup.
Thecalyxmaybelusedandclosedexceptloraterminalporeoritcanbequite
openintheintheIlowerbud.Thecalyx-lobesmaybescarcelydeveloped,orquite
evident.Calyxstructureisgenerallyhelpfulatthespecificlevelinthecomplex.
There is considerable variation among members of the Psidium
graudijoliumcomplexandtwoorthreedistinctmorphologicalentitiesmay
growtogetherorneartooneanotherForinstance1haveseenPgrandi/o/iuni,P.
australcvar.australcand P.mis'^ionumgrowingtogetherattwolocalitiesin
southernParaguay.InthemunicipalityofMogi-GuaguofSaoPauloquitedis-
tinct formsof P.gnindifolinn], P.uustralc \'ar.austnilcandP.dusiralcvar.
sujjruliuisuinallgrow.Unfortunatelyintergradationamongthesetypicalforms
iscommon,andinsomeareasdistinctionsseemtodisappearThus,drawing
specieslimitsisquitedifficult.Iliavechosentoacceptthreespecies,butallcan
beexpected tointergradewithat leastoneotherinthecomplex.Psidium
australcIdivideintothreevarieties,butothersmightconsidertheseentities
species.IntergradationbetweenPaustralcandPgrandijoHumiscommonand
1havefounditexpedienttoacceptnumerousspecimensbetweenthesespecies
as"intermediates"withoutapplyingonenameortheotliertothem.Itispos-
siblethatthegroupthat1acceptasPaustfalcvav.urgcuicu}nhasoriginated
throughintrogressionfromPgrandifoUum.
Hybridization with themoredistantlyrelated Psidiumgumccnscalso
seemstobecommonandfurthercomplicatestaxonomy.Thereforeal<eyispro-
videdthatdistinguishesthatspeciesfromthePgrandijoHumcompiex.
1. Antherselongate,1-3mmlong,usually3-6timesaslongaswide;placentalami-
nar,sometimespeltate;tertiaryveinsoftenproducingaladderdikepattern;calyx
closedornearlyso;hairsoflowerleafsurfaceusuallymoreorlesserect,mostly
nearlystraight,usuallyreddishbrown P.guineense
1. Anthersnotelongate,0,-5-1 mmlong,about2timesaslongaswide;placenta
mound-like,notlaminarorpeltate;tertiaryveinsreticulate;calyxclosedoropen;hairs
oflowerleafsurfacegenerallyappressedandstraighttodenselytangled,usually
graytowhite P.grandifoliumcomplex
WhenstudyingthePsidiumgriiudijoUumcompfexitisimportanttoconsider
theiollowingcharacteristics;f)typeanddensityofhaircoveringoritsabsence;
2)peduncfclength;3)calyx-lobeshapeanddegreeofcalyxclosure;4)presence
orabsenceotdichasia;5)lealsizeandshape;5)leaftexture.Thedifferencesare
LANDRUM,REVISIONOFTHEPSIDIUMGRANDIFOLIUMCOMPLEX 1337
outlinedinthekeybelow.Notoneofthecharacteristicsisentirelyreliable,but
considerationofthemallseemstoworkwellindistinguishingthesespeciesin
Argentina,Paraguay,andusuallyinParana,SaoPaulo,andBahia,Brazil.InMi-
nasGerais,GoiasandtheDistritoFederal,Brazildistinctionsarelessclear.
Perret(1999)proposedthatthenumerousnamespublishedbyChodatand
Hassler(1907)andattributedtoBarbosaRodrigues,someofwhichappearas
synonymsinthispaper,shouldnotbeacceptedbecausetheiroriginaldescrip-
tionsarebriefandappeartobeamerelistofnameswithminimalinformation.
Ibelievethatthesedescriptions,althoughbrief,areinaccordancewiththeIn-
ternationalCodeofBotanicalNomenclature(Greuteretal.2000).Fortunately
theyareusuallyrepresentedbygoodtypecollectionsandmaybeidentified
accurately.
ForillustrationsIhaveusedportionsofscannedherbariumspecimens.
TheseimagescanbeviewedintheirentiretyincolorintheImageLibraryon
theASUHerbariumwebsitehttp://lifesciences.asu.edu/herbarium/.Alistof
exsiccataewillalsobemadeavailableatthesamewebsiteoncethispaperis
published.
Ecology—ThespeciesofPsidiumvaryfromforesttreestosavannashrubs
andgrowincoastalvegetationtomountainoushabitats.Thegreatmajorityof
thecollectionsoftheP.grandifoliumcomplexhavebeenmadebeloM'1200m
elevationandintheinteriorofSouthAmerica.Speciesofthecomplexareshrubs
andsubshrubsandgrowingrasslandsorinshrubbyvegetation(cerrado)and
areresistanttofiresorotherdisturbance(butperhapsnotgrazing),resprouting
fromundergroundorsurfacelevelstems,beingsimilartotheP.salutarecom-
plexinecology(Landrum2003).DuringfieldstudiesinArgentinaandPara-
guayIhavenoticedthatthesespeciespersistinthenarrowstripofnaturalveg-
etationbetweenroadsandpastures,butdonotdo wellinthepastures
themselves.
TheclimatesinwhichtheP.grandifoliumcomplexgrowsoftenhavedis-
tinctdryandwetseasons,withfreezingtemperaturesbeingrareornon-exis-
tent.CommonlyassociatedwiththemareothergeneraofMyrtaceae(e.g.,
Campomanesia,Eugenia,andMyrcia);Poaceae,Fabaceae,andAsteraceaeoften
dominatethevegetation.
Suggestionsforfuturework.—Whydothesespeciesseemtomergeinsome
areasandremaindistinctinothers?Inareaswherethedistinctionscontinue,
somesortofisolatingmechanismsmustexist.Whatarethebarrierstohybrid-
izationandunderwhatcircumstancesdotheybreakdown?Whatarethepol-
linators,thephenologicalpatterns,andbreedingsystemsofthesespecies?These
areallquestionsthatcanbestbeansweredbyfieldstudiesandperhapscon-
currentlaboratoryworkinSouthAmericaandofferinterestingopportunities
forbiologists.ThehabitatssupportingspeciesoftheP.grandifoliumcomplex
1338 BRIT.ORG/SIDA21(3)
areunfortunatelyrapidlybeingconvertedtopastureandagriculture.Abetter
understandingoltheirbiologyisurgentlyneededforthelong-termconserva-
tionofthesespecies.
KEYTOTHFSPECIESOFTHEPSIDIUMGRANDll-OLlUMCOMPLEX
1. Calyxofflowerbudwithlobesabouttriangular,2-5mmlong,aboutaslongas
wide.
2. Leavesthinlypubescenttoglabrous P.missionum
2. Leavesdenselytomentosebelow P.grandifolium
(populationsofsouthernParaguayandArgentina)
1. Calyxofflowerbudnearlyclosedorthelobestruncatetobroadlytriangular.about
2timeswiderthanlong.
3. Flowerbudjustbeforeanthesis6-15mmlong,denselylanate,theunderlying
surfaceofhypanthiumhidden,thecalyxusuallynearlyclosed;leaveswhitish
lanatebelow,generallyatleastsomewidestnearthemiddle P.grandifolium
3. Flowerbudjustbeforeanthesis5-10mmlong,moderatelycoveredwithhairs
toglabrous,theunderlyingsurfaceofhypanthiumvisiblethroughhairs(If
present),thecalyxopenornearlyclosed;leavesglabroustodenselyshortpu-
bescentbelow,generallywidestabovethemiddle P.australe
PsidiumaustraleCambess.,inA.St.-Hil.,Fl.Bras.Merid.2:283.1833.Guajdyaans-
iniliiKiintzc,Rcvis.Glmi.PI.1:239.1891.TVPH:BRAZIL:"PropevicumvulgoCapelladcSta.
MariaadlinesprovinciarumRioGrandedcS.PedrodoSuletMissionum,"Suinl-Hi/inrr,s.n.
(ll01_0TYPi;:PI,=F-36406!.=ASUphoto!).
Shruborsubshrubtoca.1(-1.5)mhigh,essentiallyglabrous(exceptforinner
calyx-lobesurlace),subglabroustodenselyhairyonyounggrowth,sometimes
denselycoveredwithappressedhairsonlowerleafsurfaces,arisingfromalire
resistantundergroundstem;hairswhitish,appressed,toca.0.5mmlong;young
twigssquareincrosssection,withfourwings,reddish-browntogray-green,gla-
broustomoderatelypubescent,glandular,withagethebarl<becominggrayto
lightbrown,thebarkflal<ingofftorevealsmoothreddish-browntograybark.
Leavesobovate,oblanceolate,narrowlyelliptic,orelliptic,3.5-11cmlong,1.3-6
cmwide,1.6-5.4timesaslongaswide,glabroustomoderatelypubescent,some-
timesdenselypubescentbelow;apexround,truncate,toacute,lessoftenwitha
cuspidatetip;basecuneate,acute,acuminate,orrounded;petioleshallowly
channeled,0-4mm long,1.2-2inm wide;midveinimpressedtoflatabove,
prominent below,thevenationusuallyeucamptodromousproximally to
brochidodromousdistally,thelateralveinsusually4-8,aclearmarginalvein
notpresent,thetertiaryveinsobscureorforminganirregularreticulatepat-
tern;bladescoriaceoustosubcoriaceous,dryinglighttodarkolivegreentodark
reddishbrown,usuallydarkerabovethanbelow,lustrousordullabove.Flower
budspyriform,5-10mmlong;pedunclessparselyhairy,1-floweredor3-flow-
ered,0.1-3.7cmlong,0.8-1.5mmwide,thearmsofthedichasia2-13mmlong;
bracteolesnarrowlydeltoid-lanceolate,1-3mmlong,claspingthehypanthium,
usuallyfallingbeforeanthesis;calyxglabroustosparselypubescentwithout,
LANDRUM,REVISIONOFTHEPSIDIUMGRANDIFOLIUMCOMPLEX 1339
apicallypubescentwithin,connateasacup-liketubefor2-4mm,withdekoid
lobesalongtheedgeofthetubeormerelywithasinuatemargin,ornearly
(rarelycompletely)closed,tearmgmoreorlessirregularlybetweenthelobesto
mm
thestaminalringatanthesis,thelobesbeforeanthesistoca.1 long,toca.3
mmwide;petalsobovatetosuborbicular,elliptic,oblanceolate,7-10mmlong,
glabrous;hypanthiumobconictosubhemispheric,2.5-4mmlong;disk5-10
mmacross,glabroustopubescent;stamens100-300,6-10mmlong,reflexedin
budsothatanthersreachthedisk;anthers0.5-0.8mmlong,with1apicalgland
intheconnective;style5-8mmlong,thestigmasomewhatpeltate;ovary3-4-
locular,usuallywithacentralhollowarea;ovules20-95perlocule,thepla-
centahiddenbyovules.Fruitglobosetosubpyriform,1.5-3cmlong;seeds
subreniform,3-5mmlong,rounded,6-50.
Psidiumaustralemaybedividedintothreemoreorlessdistinctvarieties
distinguishedinthekeybelow.
1. Leavesdenselycoveredwithhairsbeneath,theunderlyingleafsurface(exceptfor
largerveins)hiddenbyhairs P.australevar.argenteum
1. Leavessparselycoveredwithhairstoglabrousbeneath
2. Leavesoften3ormoretimesaslongaswide,lustrousabove;pedunclesusually
morethan2cmlong,usually3-flowered;calyxusuallynearlyclosedinyoung
bud;seedsuptoca.10. P.australevar.suffruticosum
2. Leavesusuallylessthan3timesaslongaswide,usuallydullabove;peduncles
commonlyalllessthan2cmlong,usually1-flowered;calyxusuallyopeninyoung
bud;seedsuptoca.50 P.australevar.australe
PsidiumaustraleCambessvaraustrale
PsidiumaustraleCambessinA.St.-flil.,Fl.Bras.Merid.2:283.1833,astotype.
(Figs.1,2).
PsidiumtriphyllumBarb.Rodr..Myrt.Paraguay12.1903.Typh:PARAGUAY."Ipe-hu,.Sierrade
Maracayu,"HdSiier4990(llOi.OTYPE:G,=A.SUphoto!)
PsidiummucwnalumBarb.RodrexChodat&Hass].,BulLHerb.Boissier7:798.1007.TvrH:PARA-
GLJAY."Ipe-huSierradeMaracayu,"Hasslcr50H2(llOlx:iTYPH:G[4sheets].=A.SLJphotos!;sheet
inGphoto105[lectotypi-,heredesignated!:iSOi_ECTOTYPE:NY!).
P.sidiumpiribebuienseBarb,RodrexChodat&llassl.Bull,blerb,Boissier7;707.1Q07.Type:PARA-
GtJAY:"CordilleradePiribebuy"Hasskr6632Uiolotypp::G[2sheets],=ASIjphotos!).
PsidiumsuhmctrakMcVaugh,Mem,NewYorkBot.Gard.18:261.1969.TYPE:VENEZUELA.
"Bolivar:EntreSanFelixyPuertoOrdaz...elev20m,26-27Jun1964(fl),"Stcyermark94275
(holotype:MICH!),
Shruborsubshrubca.1(-1.5)mhigh;leavesinainlyobovatetooblanceolate,
1.6-3.5timesaslongaswide,glabroustosparselypubescentbeneath,theupper
surfaceusuallydull;pedunclesmostlyunder2cmlong,l(-3)-Ilowered;calyx
usuallyquiteopenintheflowerbudbeloreanthesisandbeforetearingbetween
lobesbegins;fruit1.5-3cmlong;seedsuptoca.50.
ARGENTINA.Misioncs:7kmdeB.deIrlgoyen,camiiioaSanPedro,Dep,BernardodeIrigoyen,17Feb
1973(Ir),Krapovickasclal23378(CTES,MO):Candelaria,3kmSofArroyoYabebiry,4km5ofSan
Ignacioonruta12(27°15'S,55°35'W),11Dec1987(fr),lAindrum5741(ASU,CTES):Cainguas.Monte
1340 BRIT.ORG/SIDA21(3)
Fig.1.A-B.Psidiumaustralevar.australe,Landrum3909(NY).A.Flowerbuds,twigandportionsofleaves,B.Twigs,
leavesandflowerbuds.C-D.Psidiumaustralevar.argenteum.C.Manos10620(US),flowerbudsandleaves;budsare
nearlyglabrousonhypanthiumandcalyx;lowerleafsurfacedenselycoveredwithhairs.D.Silvo736(ASU),twigs,leaves
andflowerbuds.Inbothvarietiesthecalyxiscup-likeandopenintheflowerbud.
aCaArUl)b,aB2RT0Ao5sZsIienL,,.2I8DAiuls-tgcrbiUiKoW)'?Titc(d(IeFrr)r),a,lVM:uon5nn0ii0escmiIdd4ia7H'm2)a7(r-NgUYcA)is;niC:d,^oaCiTlnlagiguSao)sP,arruatnao8a,/1)kNmovS1cl^c7C8a01m)p,ollcCnliriasn^d^cci,rtcaiiml.GIn'-oM
(lNiYw)i.HG&oi5aisi:(ifSrcsr(rma/dno7(5;7a4ia(p6C,ASca..MbIOCkHm.SN^o'f).CMaairaaipiolmiaao:onImrpoeardatlroikzU.aBia.nBaOnOal.101050kmm,3S0oOfctInil^p)c('r)4at(rIiDz,
alongBR010(ca.5°40'S.47"2(V\V),290m,29hcb1980(11),Plowmanctcii9J5I(NY),MinasCcrais:
Ubcrlandia,arredores. No\ UWl(II),Halschhuch557^18(ASU,MBM).Parana:ILsirdoC.crne,Km
llt>-117,CamposdcCYistro,Muii,Castiii, Jan1947(II),HdiSihkuh581IMBM,MICH);Ipiranga,
FaxinaldoTanc|uc.20Occ1970(11).I/<((s</iInuh25<S99(ASU);BocaiuvadoSul.arredores,5Pec1978
(fl),Halschbach4J8,50(MBM,MO);MunBalsaNova,5.LuisdoPuruna,14Dec1979(11),Hatsihbach
42641(NY);RioBrancodoSul,QuebradaFundo,5Dec1995(st),Kawasakictal9.35(ASU,MBM,SP);
VihiVelha,detrasdelaiglesia,15Jan1987(fr).Knipoviikus6r-Cnstohal40895(ASU,CT1-;S);Mun.
PPiarlamqeuiarraa,.Fcaaz.e1n0dakmSan1i;.oilRCituan,iicab.;i(i5(cka.m2W5°3o0l'SC,u4n9i4i0b'aWo)n,i1dDteocPo1n9i81aG(1r1)o.slsaan(cda.ru25m°2359'S0,94W9Y°)50;'WM)u,n.2
Dec1981(fl),Landiu)}\.59.53(NY),ca,85kmSVVolGuarapuavaIncamponearRioReserva,ca.1000
LANDRUM,REVISIONOFTHEPSIDIUMGRANDIFOLIUMCOMPLEX 1341
Fig.2.DistributionofPsidiumaustralevar.australe.
m,13Mar1967(fr).Lmdcman&dcHaas4834(MBM,MICH,NY);entreSengesejaguariaiva,20Nov
B19u6r2ac(fol),doMaPta(dtr«e,(0M6u4ii7.(APSoUn,taSP)G;roMsusna.,P2a4lmNeiorva,1F9d8a9.(SIt'aD.,RSiitlav,a21&JaNnic1o9l8a2c(kfr)7,3O9li(vAeSiUr,aM3BI8M()A.SUR,orMaBiMm)a;:
Normandia,AltoRioBranco,UJun1954(fl),Rocin^i;ues4475{MlCH).SaoPaulo:Mun.Mogi-Guagu.10
kmNNVVolPaduaSales(22°11-18'S,47°7-10W),650m,22Sep1960(fr),Eitcn&EiLcn2394(NY).
GUYANA,upperDemerara-Berbiceregion,ca.27kmfromUunialongItuni-Kwakwaniroad
(5°22'N,58°7'W),30-60m,17Jan1990(fr),Gillespie3000(ASU);RupununiSavana,MarakanaiaOld
1342 BRIT.ORG/SIDA21(3)
Villagc.ca,3WitnOctlQ(T3(ri)^G(W(il((nil989(MICJl.NV);RupununiSavaiuuNappiVillage(3°25'N.
59'5i'VV).110in.29Nov1987{l\)Janscn-jaLohictul1319(MO),
PARAGUAY.AlioParana:Rva.TatiYupi,14Feb1979([»,(((ii/)i(Biiuuional/(W(.MO).Aiiiambay:
P.N.C;en-oC;ora(ea.22°35'S,56"5'W),roadtoi.onto.ca.150m,20.Aug1995(st),/.Km/rumH700(ASV,
FCQ).Caazapa:Tavai.dcstacamciitomilitarl,26"iO'S,55"20'W),30Oct1988(lU,Husualdo/7.H[MO).
Cancndiyu:circaYpe-jhu,1Nov1978(11),Bcrminii18.306(NY);Ygatimi,RcservaNaturaldel13osc|uc
Mbaraca)-u(ca,24°10'S,55HO'W).Nandurocai.19Nov1995(fr),Landnim8859(ASU,FCQ),Itapua:
Capt,Miranda,4,2kmNolentrancetoHotelTirolnearCONAVIproject(27°12'.S,55°45'\V),ca.210
m,<)NovIWt(11).Laiidruin8798(ASU,FCQ);Capt.Miranda,roadtoJesusca,O.bkmfrommam
highway(ca,27°12'S,55°45'\V),ca,185m,9Novl995(ll),Linu:iri())!88]6(ASU.FCQ),Misumcs:12km
Wdc.Sanlgnacio,caminoaPilar,15Novi978(rr),A?-|wd(il.(92.5(CTES,MICH,MO);SanJuanLiaiitista,
ca.8,5kmalongroadtoPilarca,170m,8Nov1995(fl).LandnimH789(ASU,FCQ);rt,1betweenSan
RamontoSanPatricioatKMA262,ca,4kmFolrdtoAyolas(ca,27°5'S,5t)°40'W),ca.240m,8Nov
1995(11,Ir),Landnim8795(ASU,FCQ);ri.1,kmA2I8,F147,betweenAsuncionandEncarnacion,ca.
210m.10Nov1995(ID,Landnim8825(ASU,FCQ);Fa,FaSoledad.3kmSdeSantiago(56°46'W.
27°10'S),3-4Feb1988(1r).Scliinini&I'cnnu260,54(ASU),Paragiiari:Part|ueNacionalYbycui,Campo
cerradoenNl:corneroftheparkonArroyoCorricntcs(26°03'S,56°50'W).21Dec1988(II),Zardinivl
al.8980mO.V\').
VENKZUELA.Bolivar:Mun,Asc,Farreras,Mari|-ia-Aripao(7=29'N,65°20'W),80m.Feb1990
(yir),Licow759(MO);DistrRoscio,ca,50kmalNdcTiimeremo.450m.7May1986(11).Hii!'cr11627
(MO);km111onPuertoOrdaz-CerroBolivarrailroad,300-350m,26Oct1953(fl),Ma\^uircctai.]6000
(NY).
ThefourspecimensofPsidiummucronatun]atGolHassier5082areamixture
ofentities.TheonespecimenmostcertainlybelongingtoPau,stra/eischosen
astheIcctotype.ThetypeofPsidiumtriphyllummightbestbeplacedunderP
australevansufjruticosum,butIcannotsaywithcertaintybasedonthephoto
1have.
Psidiumaustralevar.argenteum(O.Berg)Landrum,comb.nov.(Fig.3XP.siciiion
ar^cntciunClberg,inMart,,I'i,Bras,14(1),388,1857,Piuliumai^icnieumvarpurpuycumO
Berg,111Mart,,Fl.Bras,14(1):388,1857.inadmis.siblenametobereplacedbyP.ay^j^cnicum\'ar
t(rj.;(')i((-iim,thetypeser\'ingtotypilythe.species,Ciuajavaar^^cntca(O.Berg)Kuntze,Revis.
Gen.Pi,1:239.1891.Tm'I-:BRAZIL:lsot\'peolFav^j^t'iiteum\'cU.purpurcumO,Berg,heredesig-
natedasiJic:"[OiYin;olspecies,"incatupisprov.RioGrandedoSul,"Sdlow.s.n.(SYNTYl^l--:B,lost;
i.S(^SYNTYPi-::P!|i.i:tTOTYii;,heredesign.ucdi,=F-3o405L-ASUphoto!),
I'sidium(lou'dliiiiiC^ambess,,m,A St,-1111,Fl.Bras,Merid,2:283,1833,P,si(li[onLuncatum\'ar
nivcioiiO,Berg,inMart.,Fl,Bras.14(1):405.1857.inadmissiblenametiibereplacedbyP
"cPurnocpaeluurmbe\iain"Sl,ulnocaoadleulmR.cC)'liiunnapvrao\c'"iiunic('i(a((iMJmKaunstzGee,raReesv,i"s.SaGieunt.-LPlIi,la1:i2r3c9,s.i1i-89(1l,lOTlY.lc'nl-:YriBi:RAPIZ,I=LF:-
3Ci409!,=ASUiphoto9,
Psidiumaf;i^CM(cintivar.inixii.s(i/iiliinnO,Berg,inMart,Fl,Bras,14(1):388.1857,Type:BRAZIL:"ad
pagumFormig.isinpartedesertapro\'.Minarum,"Fohl/2S7.534i(.SYNTYPF.S:W,B,M;syntype
atW,=F-31417i),
?Psidiuniar\!^cnlCHmvd\\i[riindil<dinn]O-13erg,mMart..Fl,i3ras14(1):388,1857,Tyii::BR,AZlL:"in
campisprovS.Pauli.'CSc/lou'.s.ii.iiioi-Oivi'i-;:B,lost).
^PsidiumargenteumvanpiunilumO.Berg,inMart..Fl.Bras.I4(l):388,1857.1Yi'i::BRAZIF:"adS.
Ignacio,"Sc/lou'.s.n,(iioroTvri;:B,lost).
LANDRUM,REVISIONOFTHEPSIDIUMGRANDIFOLIUMCOMPLEX 1343
Fig.3.A.DistributionofP.australevar.argenteum(dots)andP.missionum(stars).B.DistributionofRaustralevar.
suffruticosum.
1344 BRIT.ORG/SIDA21(3)
Shruborsubshrubca.1(-1.5)mhigh;leavesmainlyobovatetooblanceolate,
L6-3.5timesaslongaswide,denselypubesecntbeneath,thehairshidingthe
underlyingsurfaceexcepttorlargerveins,theuppersurfaceusuallydull;pe-
dunclesmostlyunder2cmlong,l(-3)-flowered;calyxusuallyquiteopenin
theflowerbudbeforeanthesisandbeforetearingbetweenlobesbegins;fruit
1.5-3cmlong;seedsuptoca.50.
BRAZIL.Goi;is:.VrradoCaia|xxca.OOkmSotCaiaponiaonroadtoJalaiil7'12'S,51''47'W),800-
1000m,27Oct1%4tfI),/runtc''-Sodcrstmm74.32(MIClI,MO,NY);SerraOctaldeGoias,ca,6kmS
ofPosseCI4°.S,4(V'W),800m."iAprl^b(Ir),IrwinclalH.19,3(NY);Coiitratoi-tcCentral,ca.lbkm
(NAHSLoll,CSaPt);alMaou,n.87'T3ijmu,ca2l3,JPaendr1o07L0es(sI,r),13IfwMianre1t9t8d.22(.I5r)2,24Ha(iNsYc)h.lMniiJnias44G7t0r(a^is(:AS.USc)r;inehaa.,3(151),kCmhiNvuWiHoOf
Paiaeatu,1000m,8Feb1Q70(Ir),]/winc(al26330(NY):Tiradences,SerradeSaoJose,1300-1400m,
03Oct1987til),PfionMO(ASU).Parana:Mun,Jaguariaiva.Fa::endaChapadaSantoAntonio,27
SNiohva1&96C8o(r11d)c,iHiavt7s^i6hb(aAcShU.20M4B1M0)(;AMSUu,n.MCBaMs)t;ro,BuCraarcaomdboeiPabdyreR,iMouSna.oPjoonatoa(cGar.os2s4a°,302'S4,N5o0v°21'W9)8,9(9151)0,
m,15Jan19ft5(ylr).Smithctal14494(MICH,NY);Man.PiraidoSul,nearPiraidoSul(ca.24°20'S,
N50N°1W0'Wo)l,ce1n0t0e0r-1ol10S0aom,CaIrbljoasn(2119°6595'(Sf,r)4.7S°m5i5t'hW)c,l8al2.514m5,5154(JMuInCH1,96N1Y()f,r),SafioiJPcanueltoa:l.Sa2o90C7at(JMosI,CH3.,5SkP)m;
Botucatu,18kmN,14kmEolSaoManuel(48°25l)"W,22°45'0"S).550m.28Sep1972(fl).Gottsheri>,ey
I96K-28972(ASU);Itirapina.Cen-adodoValcrio,19OctI9Q4(fl)KiuoshiiactalMI96(ASU):Mun.
Itaberaba,RioVerde,17Feb1982(irj,Kummrow1786(ASU);Mogi-Gua(;u,MartinhoPrado,Reserva
Biologicadai'azendaCampminha,15Oct1980(11),MaiitovaniL;63(ASU,RB,SP);SaoJosedosCam-
pos,a3kmIcstedacidade,29Apr1961(fr),Mcilto.s8903(ASU,SP);AguasdcSantaBarbara,ca,IIkm
dacidadcemdirecaoaLengois,19Dec1995(11),Souza&Souza.9634(ASU);Mogi-Mirim.9Dec1945
(ylr),Vic^as7%7(ASU).
PARAGUAY.Cannideyu:SierradeMaraca\'u,Oct190001).Haislcr5076(NY).
PsidiunianstralevarsuffriuicosumCO.Berg)Landrum,comb.nov.(Fig.4).Psulium
sujjiuliLOSumO.Berg,inMart,,Fl,Bras,14(1):387.l857,CH(ajtJvt/sn//rii(i(ii,sa(O,Berg)Kuntzc,
Revis,Gen.Pi.1:239,1891.Tyi'i;:BRAZIL:"mpascuisdesertorum[3rasiliae,"Pohl1021(llOLO-
TYl'i-":15,lost;ISC^TYPI-.S:M!,=F49727I,W,4liitoivpi-:.heredesignated],=ASUphoto!).
PsuhumalailuuO.Berg,mMart,,Fl,Bras.14(I):004.1859.TVPI::BRAZIL:"SerradaChapadaprov
Mmarum,'Ricddsji.(iioitvrvri::LF.=ASUphoto'),
P-Sitiiluii,si(//rii(ico.sumvaralataKiaersk.,Enum.Myrt,bras,27,1893,Typi-;:BRAZIL:"LagoaSanta,"
"SaoSitnao,"Wtjrming,s.n.,Lo/xr(.'n2]2;G!fizioi(.;6972(sYNTYPES:C;iSOSYNTYPE:Glazic)u16972,
Rl,=ASUphoto!;ISOSYNTYPP;:Li)(i;rcn2(2,SP!,=ASUphoto!).
Shruborsubshrubtoca.0.3mhigh;leavesobovate,oblanccolateornarrowly
elliptic,mainly2-6timesaslongaswide,mostlyglabrous,theuppersurface
usuallysomewhatlustrous;pedunclesmostly1-4cmlong,often3-flowered(1-
floweredpedunclesgenerallypresentaswell);calyxusuallynearlyclosedin
theflowerbudbeforeanthesisandbeforetearingbetweenlobesbegins;fruit
mostlyupto1cmlong;seedsuptoca.10.
BOLIVIA.SantaCruz:Velasco,ParqueNacionalNoelKemplfMercado(l3°53'4!"S.60°48'46"W).500
m,28Jan1997(11).Sotoctal424(A.SU),
BR/\Z1L.MatoGrosso:BetweenBuritiandChapadadosGuimaraes,720m,19Oct1973(11).