ARDISIA NIAMBIENSIS (MYRSINACEAE), A NEW SPECIES OF ARDISIA SUBGENUS ARDISIA FROM THE CHOCÓ FLORISTIC PROVINCE OF COLOMBIA

5 Pages·1998·2.1 MB·English

by  John J Pipoly

ARDISIANIAMBIENSIS(MYRSINACEAE),
ANEWSPECIES OFARDISIASUBGENUS
ARDISIAFROMTHECHOCO FLORISTIC
PROVINCEOF COLOMBIA
JOHNJ.PIPOLYIII
BotanicalResearchInstituteofTexas
509PecanStreet,FortWorth, TX76102-4060U.S.A.
[email protected];[email protected]
ALVAROCOGOLLO
P.
FundacionJardinBotdnico,JoaquinAntonioUribe
ApartadoAereo51407,Medellin,Antioquia, COLOMBIA
acogollo@latinmaiLcom;[email protected]
ABSTRACT
DocumentationoFthefloraoftheNaturalReserveRi'oNanibfhasresuhedinthedis-
coveryofaheretoforeundescribedspecies,Ardisianiambiensis.Thespeciesisdescribed,
illustratedanditssalientmorphologicalfeaturesareelucidated.Ardisianiambiensisisbest
placedinsubgenusArdisiabecauseofitsterminal,glandular-papillate,paniculateinflo-
rescenceswithtripinnatebranches,andtheevenlydivided,5-lobedcalyx,whosesymmet-
riclobeshaveglandular-ciliolatemargins.ItismostcloselyrelatedioArdisiapremontana,
ataxonendemictotheeasternslopesoftheEasternAndeanCordilleraofsouthernEcua-
dorandPeru.
RESUMF.N
AldocumentarlafloradelaReservaNaturalRioNambi,seencontrounanuevaespecie,
Ardisianiambiensis.Sedescribe,seilustraysediscutensuscaracteresprincipalesysobresalientes.
Ardisianiambiensisscubicamejordentrodelsubgenero^ri?/zi-Mdebidoasuspani'culasterminales
yglandular-papillosasconramificaciontripinnada,sucalizsimetricamentedivididocon
lobulossimetricosyglandular-cilioladosalolargodelosmargenes.Lanuevaespeciees
muyafi'naArdisiapremontana,unaespecieendemicaalaHildaorientaldelaCordillera
OrientaldelEcuadoryPerti.
INTRODUCTION
Thepantropical^enusArdisiaSwartzcontainsapproximately400-500
species(ChenCheih&Pipoly1996)withcentersofhighspeciesdiversity
inMalesiaandtheChoco FloristicProvincefrom PanamathroughCo-
lombiatoEcuador (Pipoly 1991, 1992, 1994, 1995, 1996). Withinthe
Neotropics,approximately300specieshavebeendescribed,themajority
SiDA18(2):389-393. 1998
390 Sum18(2)
fromMesoamerica.TherearerelativelyfewSouthAmericantaxa,perhaps
notpassing40total.Duringthecourseofananalysisofthevegetationof
theRi'oNambiNaturalReserve,locatedinwesternportionofNariiiocor-
respondingtotheChocoFloristicProvince,anewspeciesofArdisiawas
discovered,whichisdescribedherewith.
ArdisianiambiensisPipoly&CogoUo,sp.nov.(Fig. 1).Typi:COLOMBIA.
NNaacrLiIrNaOl:RiM'opiNoa.mbBair,bacca.oa5s;dCmoralrcWgimdiccAnlttoasquOerrt,izFaylZdaasmoOrcac;idVccnitcadlacsEldeBalraroC;orRdeislclrevraa
Occidenral,01°15'N,78°08'W,1,250-1,350m,9Sep1997(stam.Fl),/Ptpoly,
A.Corolla,M.Lopez&M.Rodriguez21572{HOl.OJWY^l\SO;ISOlYi'F.S:BRIT,COL,
FMb',GH,HUA,JAUM,K,mo,NY,'FULV).
Obinfloresccnriamtcrminalcniiripinnacipaiiicularam,calyceniaequalitcrdivisum,necnon
loboscalycinossimetricosglandulari-ciliolaribusqucsubgencriArdisiacpertinet.Propter
laminasadapiccbreviacuminatas,rhachidesinflorescentiaresangulatos,marginesscpalinos
hyalinoscarinatossubintegroserososqtic/^.p)~ernonM)!oy^\dt:areteafhnis,sedabearaniulis
glabris(nonfufuracco-lepidotis),laminiscoriaeeis(noncharraceis),subtcrglabrisdense
punctatispunctato-lincatisque(neefurfuraeeo-lepidotis),petiolis7-10(non15-25)mm
longis,floribuspedicellatis(nonsessilis),deniquelobiscalycinisdeltatisvellatetriangularibus
(nonovatis)2-2.2(nee1-1.2)mmlongisstatimdistinguitiir.
TreetoH)mX15cmDBH.Bmnchletsterete,4-8mmglabrous.Leaves
alternate;bladescoriaceous,oblanceolatetoobovate,{14.1-)19-25.4cm
long,(6.8-)7.5-9.4cmwide,apicallyabruptlyacuminate,theacumen5-
8 mm long, basallyacute, decurrenttopetiolebase, midribcanaliculate
andprominentlyraisedabove,prominentlyraisedanddenselyblackpunctate-
lineatebelow, thesecondaryveins numerous, .39-47pairs, prominulous
aboveandbelow,dryingdarkabove, pallidanddenselyperpuncticulose
below,thepunctationsintheformofshortlines,themarginslightlyinrolled
exceptrevolutebasally;petiolesmarginatetobase,7-10mmlong,glabrous.
InflorescenceiQUTiinA,pyramidal,tripinnatelypaniculate,12.8—22.5cmlong,
11.5-33cmwide,peduncle1-2.5cmlong,therachisprominentlyangulate,
thesecondarybrancheswithsmallerpanicularunits12-16cmlong,6-10
cmwide, theultimatebranchesracemose, moderatelyrufousglandular-
granuloseandprominentlyanddenselyblackpunctate-lineate;floralbracts
caducous, unknown; pedicelscylindrical, (1.0—)1.5-2.5(-3.0) mmlong.
Flowersunknown,butfruitingcalyx3-3.5mmlong,rufousglandularpapillate
anddarkenedatjunctionoflobeandtube,thelobesdeltatetowidelytri-
angular,2—2.2mmlong,2.2—2.5mmwide,apexacutetoaminutelyacuminate
apex,minutelyrufous-lepidoteandcarinatemediallywithout,prominently
punctateandpunctate-lineate,themarginhyaline,somewhateroseandsparsely
glandular-ciliolateapically.frw/Vglobose,5-8(-l0)mmlongandwidewhen
dried;whenfre—sh,exocarpfleshy,bittertasting.
Distribution. KnownonlyfromReservaNaturalRioNambi,Nariho,
Colombia,at1,250-1,350melevation.
PiPOLYANDCOGOi.LOP.,AnewspeciesofArdisia 391
Fig.1.ArdisianiambiensisPipoly,showingthepyramidaltripinnateinflorescence,densely
andprominentlyblackpunctateleafsurfaces,shortpetiolesmarginatetobase,andpedi-
cellateflowers.Drawnfromtheholotype.
392 SiDAl8(2)
—
Ecology. Ardisianiambiemisoccursinpremontanepluvialforest,receiving
approximately7,800to8,200mmrainperyear.Thespeciesoccursinrelatively
lowdensities,—inattheforestmarginonridgetops.
Etymology. ArdisianiambiensisisnamedphoeneticallyfortheReserva
NaturalRioNambi,aprivate,nonprofit,integratedconservationandde-
velopmentareainthestateofNarino,Colombia,operatedbyFELCA,the
EcologicalFoundationoftheHummingbirdsofAltaquer(FundacionEcologica
delosColibrisdeAltaquer).
ElPRaarrari'ov,piR:.csCcrOvLaONMaBtuIrAal.RNi'aoriNnaoi:nbMfp,ioca..RSarkbmacoaalsW;C"doerArletgaiqmuieern,roFsaOlrdtaiszOZcacmiodreant;aVleerseddae
PlaipColoyr,diAlleCorgaolOicoc.idMe.ntLaolp,ezOT&M1.5'RNo,dr!7f8(°ue0z82'1W2;271{,B3R5I0T-,1,F4M50R,m,JA3USMe,pP1S9O9)7.(ster.),/.
Onaccountoftheshortlyacuminateleafapices,angulateinflorescence
rachises,carinatesepalswithhyalineandsubentiretoerosemargins,Ardisia
niambiensisismostcloselyrelatedtoArdisiapremontanaPipoly.Itissepa-
ratedfrom/I,premontanabyitsglabrous(notftirftiraceous-lepidote)branchlets,
thecoriaceous(notchartaceous)leafbladesthataredenselyblackpunctate
andpunctatelineate(andnotfurfuraceous-lepidote)below,petioles7-10
t(rnioatng1u5l-a2r5)(nomtmovlaotneg),speepdailcseltlhaattea(rneo2t.s0e-ss2i.le2)(falnodwenrsotan1d.0d-e1l.t2a)temormwildoenlg.y
ArdisiasubgenusArdisia,towhichA.niambiensisbelongs,isdefinedby
thewell-developedbutearlycaducousfloralandinflorescencebracts,race-
moseorrarelyspicatebranchletsoftheinflorescence,theanthersdehisc-
ingbysubapicalporesopeningintowidelongitudinalslits,andsymmetric
sepals.Withinthatsubgenus,theotherspeciesknownfromtheChocoinclude
A.colombianaLundell,A.granatensisMez,A.opacaLundell,A.validaMez
(=A.perinsignisLundellsyn. nov.),A. monsalveaePipoly,andA. cabrerae
Pipoly(Forero&Gentry1990;Pipoly 1991, 1995)Amongthesespecies,
theonlyoneswithinflorescenceshape,pedicellateflowersandsepalssimi-
lartothoseo^ArdisianiambiensisareA.cabreraeandA.monsalveae.How-
ever,thethreespeciesmaybeeasilyseparatedbythefollowingkey:
1.Calyx2.4-2.9mmlong,apicallyohurse,themargin.sglabrous,entireto
subentire.
2.Leafbladescoriaceous,elliptic;sepals3.4-3.3mmwide,glabrous A.cabrerae
2.Lealbladeschartaceous,widelyoblanceolatetoobovate;sepals0.5—0.6
mmwide,denselyandminutelyrufo-puberulcnt A.monsalveae
LC'alyx3—3.5mmlong,apicallyacutetoamintitclyacuminateapex,min-
utelyrufous-lepidoteandcarinate,themarginspaiselyciliolate A.niambiensis
ACKNtWIJ'.D(;MK.Nr,S
SupportforourstudiesinplantdiversityattheRioNambiNaturalReserve
isprovidedbyagenerousgrantfromtheNationalGeographicSociety,No.
PiPOLYANDCoc.OLLOP.,AnewspeciesofArdisia 393
5575-95.WethankthecollaborationoftheherbariumoftheUniversidad
delNarino(PSO),especiallytheDirector,Biol.MartaSofiaGonzalezInsuasty,
andtheherbariumtechnician,BernardoRamirez.Wegratefullyacknowl-
edgethelogistical collaborationofFELCA(FundacionEcologicadelos
ColibrisdeAltaquer),especiallythatofDonMarcialBisbicuzandMauricio
Flores.WealsothankJuanGuillermoRamirezArangoandAdrianaGomez
fortechnicalandlogisticalhelp.WearemostgratefultoDr.RamiroFonnegra,
directorofHUA, formakingtheservicesofGloriaMoraavailabletous,
whoskillfullypreparedtheillustration.
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