A Newly Described Species of Microlicia (Melastomataceae) from Minas Gerais, Brazil Author(s): Rosana Romero Source: Novon, Vol. 13, No. 1 (Spring, 2003), pp. 116-118 Published by: Missouri Botanical Garden Press Stable URL: http://www.jstor.org/stable/3393575 . Accessed: 28/11/2013 06:39 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp
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A Newly DescribedSpecies of Microlicia(Melastomataceae) from MinasGerais,Brazil RosanaRomero Institutode Biologia,UniversidadeFederalde Uberlandia,CaixaPostal593, CEP38400902, Uberlandia,MinasGerais,
[email protected]
ABSTRACT. Anotherspecies in Microlicia(Melastomataceae)is describedand illustrated.Microlicia obtusifoliais knownfromthe rockyslopes of Diamantina,MinasGerais,Brazil.Microliciaobtusifolia Cogniauxex R. Romerois distinguishedfrom affinedspecies (M.pusillaCogniaux)by its obovate, 1- to 3-nervedleaveswithobtuseapicesandattenuate bases. Keywords: Brazil,"camporupestre,"endemic, highlandvegetation,Melastomataceae, Microlicia, MinasGerais.
S7 x 24 mm,obovate,apex obtuse,base attenuate and slightlyconstricted,marginentireor inconspicuouslycrenulate,hyaline,coveredwithsessile glandson bothsurfaces,glutinousor not, 1- to 3-nerved,withinconspicuouslateralveins.Flowers 5-merous,sessile or almostsessile, solitary,terminal or groupedin the branchapex. Hypanthium 2.0-2.5 x ca. 2.5 mm, campanulate,with stalked and sessile glands,on the apexwithdense stalked glands, eventuallywith caducous glands. Calyx lobes 3.5-5.5 mm long, lanceolate, apex acute, apiculateor not, coveredwith stalkedglands.PetThe Neotropicalgenus MicroliciaD. Don con- als 8-9 x ca. 6 mm,magenta,obovate,apexasymsists of approximately 170 speciesoccurringmainly metricallyacute, brieflyacuminate,glabrous.Stathroughoutcentral and eastern Brazil (Wurdack, mens 10, dimorphic.Largerstamens5, filaments 1993) with ca. 100 endemicspecies in the states 3.54.0 mmlong,purple,thecae2.0-2.5 mmlong, of MinasGerais,Goias,and Bahia.Duringprepa- purple,oblong,not corrugate,with rostrumca. 0.5 rationof a treatmentof Microliciasect. Pseudomi- mmlong,white,prolongedconnective3.0-3.3 mm, croliciaCogniaux,two specimenswerefoundwith purpleewithventralappendageca. 1 mmlong,yelan unpublishedname that had been annotatedby low,expandedand truncate,smallerstamens5, filaments3.54.0 mm long, purple,thecae 1.5-2.0 A. Cogniauxon the label. mm long, yellow,oblong,not corrugate,with rosMicrolicia obtusifolia Cogniauxex R. Romero, trum0.2-0.3 mm long, prolongedconnective1.2sp. nov.TYPE:Brazil.MinasGerais:Diaman- 1.5 mm, yellow, with ventralappendage0.3-0.5 tina, subidaparao Cruzeiro,11 Jan. 1963,A. mm long, obtuse. Ovarysuperior,3-locular,gla1? Duarte & G. M. Barroso7858 (holotype, brous;style ca. 6 mmlong,filiform,glabrous,stigma punctiform.Capsuleca. 3 x 3-5 mm,greenish HB; isotype,NY). Figure1. brown,globose,the superiorportion(almost1/3) of Suffrutex 5040 cm altus.Caulissubteres,glaber.Ram- the matureovarynot coveredby the hypanthium uli primumpunctato-glandulosidemum glabriusculi. Laminaesessiles vel brevibuspetiolis,erectae,obovatae, andloculicidallydehiscentin the upperpart.Seeds apice obtuso,base attenuata,margineintegerrima raroin- 0.S0.7 x ca. 0.3 mm, numerous,slightlycurvede conspicuo-crenulata, supraet subtusimpresso-punctatae,foveolate. 1-3-nerves.Hypanthium trichomatibus glandulosispedicellaribusad apices. Petalamagentea,apice curto-acuminato.Ovarium3-loculare.
Microliciaobtusifoliais endemic to the region aroundDiamantinat MinasGerais,Brazil,on rocky Microliciae pusillaemaximeaffinissed praecipuelam- slopes. Accordingto specimenlabels, this species ina folii obovata,apice obtuso,base attenuatadiversa. flowersin Januaryand April, and fruitsin March Erect subshrub,50-60 cm tall, branchingdi- and November. chotomouslyor trichotomously, youngbranchesfasMicroliciaobtusifoliaresemblesM. pusilla Cogtigiate, quadrangular, glutinous,coveredwith ses- niaux which occurs sympatricallyin Diamantina. sile glands, older branchesbrown,quadrangular, Bothhavedense stalkedglandsin the hypanthium withoutleaves at the base, leaf scars conspicuous, apex and in the calyx lobes. The obovateleaves glabrescent.Leavessessile or with shortflattened with an obtuse apex and attenuate,slightly conpetiole to 0.5 mm, imbricate,erect, plane, blades strictedbase with 1 to 3 veins distinguishM. ob-
NOVON 13: 116-118. 2003.
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Volume 13, Number1 2003
Romero Microlicia obtusifolia from Brazil
117
c
Figure1. MicroliciaobtusifoliaCogniauxex R. Romero. A. Habit. B. Lateralviewof smallstamen. C. Lateral viewof largestamen. D. Petal. E. Bud,hypanthium, andcalyxlobes. Drawnfromthe holotype(Duarte& Barroso 7858).
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Novon
1 18
fzlsifoliafrom llf. pusilla. The latter has ovate to tilaa. IX.I>}X.1969. H. b. Irllitlet ul. ;22161(B!PA;ca. 12 klll SA ol DialllantirlatIo(kx slopes with soil-filled pockovate-lane eolate leaves with an acute apex ancl ets atlcl ( Ies-iees. 19 Jan. 1969. H. S. Irz( ir1et al. 22198 rouncledbase withonly one centralvein. In M. olv- (N\ . ['>i): Psiri})iri 2 t NO\T. 1992! J. R. Stehmanns.n. tusifolia,the leaves are larger (4-7 x 2 I mnl) 8H(E13):estrada Diamantina-Gotlveia ca. 12 km SW de l)iatllulltilau.:3()Mar.SO()1^R. Ronzero & J. N. l\tahajims1 thanin M pusilla (2-4 x 1-2 mm). This species was reeognizedby A (foyaniaux fi()68 (HU Fl- MO); Santa Luzia (lo Rio tlas Velhas, >c/ll((l(A-e.s.rl. (RP;)s.s.,2.(OUPR). basedon Glazioucollections(Glaziou19206 as Hicrolici(lobtusifoliaand Glaziou19207 as Micralie i(l .4cAnoltIefIgment.s.I am gratefulto the Univerobtltsifoliavar.microI)hylla)* but these nameswele siclacleFecleralcle Ulerlandiafol the facilities of never publishedby him. LaterGlaziou(1908) ef- the HerhariumUSerlandense(HUFU) CNPqfor a fectivelypublishedCogniaux'snameMicroliciflob- researeh glant(300918/93-3),Margaret MeeFouna;usifolia and the varietymicrol)hxlla, but invali(llv, datioafora fellowshipto visit the HerbariaBM,K, in his list for centralBrazil.This publicationl)v P an(l At and JamilTannusNetofor preparingthe Glaziouwas not valid due to the algsenceof a cli- illustration.I thankRenatoGoldenbergfor review agnosisereferringto Article32 of the Interrlfltiotlflle ommenttowarclthe revision of the manuscript, Code of Botanical Nomenclature(Greuteret a1.. TareisoFilgueirasfor the revisionof the Latindi2000). Afterthe author^s examinationof Glaziou^s agllosi.sF NicholasTurlan(lforhis nomenclatural incollections(Glazioll19206, 19207 cited hereinas putt as ss-ellas the curatorsof B. BHCB HB, paratvpes)in BMeK, P, and W!it is quiteclearthat HIfFX K MO \TYOUPR P, RnRB and US for Cogniauxrecogni2edthis newtspeciesbasedon material at Brussels,althoughthese sheets were not seen lzythe author.Glazioufulrherwrotein se he(l. I,itelattll-e(Liteel On Glaziou 19206 "Microliciaobtu.sifoliaCogn. Glaziou. \. 1R\/1. 1908. Liste des plalltes (lu Bresil Cenined. ex numero^' (seen on sheets at K! Pt R)*ancl tlal le(^ueillies en 1861-1895. Melastomatacees. Bull. So(. Bot. Fal(e z4. Mem. 3: 24()-298. on Glaziou19207 the name"Microlicia obtllsiJoli (Jl-etltel:E.^ J. McNeill. F. R. Barrie, H. M. Burdet, V. Cogn."(as seen on sheets at BM,KeP, R). xpet
imen
loanx.
DellloulitltT. S. Fily;ueiras D. H. Nitolson, P. C. Sila. J. E. Skog. P. rRlehalle.N. J. Turland & D. L. Hawksss ol tll (e(litors). 200(). Intelnational Cocle of Botanical closCrystaes,4 Apr.1892, Glazioll 19206 (Kt P R);Serra dos Crystaesa Diamantinat 4 Apr.1892! Glez7ioll 192?()7 Nolllellelatule (FiaintLouis Cocle). Regnum Veg. 138. (BM, K P, Rt US); Serrados Cristaese4 Apr. 1892. A-ulelack. J. J. 199.3. Melastolllataceae.P. 260 il2 A. R. A. (X>lts-NanRijll (e(litor). Flora das Guiallas Fascicle 13. Sch1sacke7866 (W); Diamantinas Sentinelav 8 Dee. 193,. E
