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A New Species of Minasia (Asteraceae, Vernonieae) from the Planalto De Diamantina, Minas Gerais, Brazil Author(S): João Semir and Flávia F

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A New Species of Minasia (Asteraceae, Vernonieae) from the Planalto De Diamantina, Minas Gerais, Brazil Author(S): João Semir and Flávia F A New Species of Minasia (Asteraceae, Vernonieae) from the Planalto de Diamantina, Minas Gerais, Brazil Author(s): João Semir and Flávia F. Jesus Source: Novon, Vol. 14, No. 2 (Jun., 2004), pp. 233-235 Published by: Missouri Botanical Garden Press Stable URL: http://www.jstor.org/stable/3393322 . Accessed: 24/07/2014 09:50 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 . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Missouri Botanical Garden Press is collaborating with JSTOR to digitize, preserve and extend access to Novon. http://www.jstor.org This content downloaded from 143.106.1.143 on Thu, 24 Jul 2014 09:50:12 AM All use subject to JSTOR Terms and Conditions A New Species of Minasia (Asteraceae,Vernonieae) from the Planaltode DiamantinaXMinas Gerais Brazil Joao Semir Departamentode Botanica,Universidade Estadual de Campinas,C. P. 6109, 13083-970, CampinasSP, [email protected] Flavia F: Jesus Departamentode Genetica,Universidade Estadual de Campinas,C. P. 6109, 13083-970, CampinasSP, [email protected] ABS'['RAC1n. A new species of Minasia (Astera- alto de Diamantina.This region seems to be the ceae, Vernonieae)was foundin the "camposrupes- one with the greatestdiversity of Minasiaspecies, tres"of the Planaltode Diamantina,Minas Gerais, with four of the five previouslydescribed species Brazil.Minasia lewinsohnii is characterizedby its occurringthere (M. alpestris,M. scapigera,M. per- overall small size, linear to elliptical subfleshy eirae,and M. splettiae),in additionto the new spe- leaves, sessile to pedunculate capitula, and cies proposedhere. achenes with indumentumthroughout the surface. So far, it is knownfrom only one population. Minasia lewinsohnii J. Semir & F. F. Jesus, sp. Key words: Asteraceae,Brazil, Minasia, Ver- nov.TYPE: Brazil. Minas Gerais: Diamantina, nonleae. EstradaGuinda-Sao Joao da Chapada,campo arenosocom cascalhoquartzitico, 18°09.59'S, Minasia H. Robinson(Asteraceae, Vernonieae) 43°43.00'W,7 Sep. 1996 (fl, fr), 1: M. I,ewin- was recentlyestablished by Robinson(1992), who sohn,R 1. Prado,A. J. Santos& J. C. Silva in createdthe genus based on two species previously PIC96696 (holotype,UEC; isotypes, K, M0, describedas belongingto VernoniaSchreber and R, SPF,UEC, US). Figure1. establishedanother new species. Accordingto Rob- inson (1992, 1995, 1996, 1999), the genus cur- Haec species Minasiaecabralensi capitulis interdum rentlyincludes five species: M. alpestris(Gardner) pedun(ulatissimilis, sed ab ea habitubreviore, laminis H. Robinson,M. scapigeraH. RobinsonM. perei- foliorumminoribus ( arnosisque, pedunculis brevioribus et at henia omnino indumentoobtecta differt. Habitu M. rae H. Robinson,M. splettiaeH. Robinson,and M. splettiaeappropinquat. cabralensisH. Robinson. Minasiaspecies are endemicto the camposru- Plant1941 cm tall, herbaceous,perennial; stem pestres of the EspinhaSoRange in MinasGerais, 1-6 cm tall, obscured by the surroundingleaf Brazil. Morespecifically, they occur in the high- sheaths. Leaves formingrosettes, sessile, sheaths altitudeareas ranging from the Serrado Cip6to the ca. 3 mmtall, blades2-9 x 0.2-0.8 cm, subfleshy, Planaltode Diamantina,as well as in the isolated linear to elliptic, apex acute, margine ntire;vena- westernextension of the camposrupestres in Minas tion pinnate,ascending nerves inconspicuous.In- Gerais,the Serrado Cabral.The camposrupestres florescencescapose, scape 13.540 cm tall, 1.7- have an immense diversity of species, many of 2.9 mm diam., partiallyleafy, up to 3 per rosette, whichare endemic(Giulietti & Pirani,1988). They few or no branchingsat the apical region, 1 to 5 are consideredto presentthe greatestdegree of en- capitula per branch;leaves of the scape sessile, demism among Brazilianvegetation types (Joly, 9.3-26 x 1.>5.8 mm, ovate-elliptic,apex acute, 1970). Therefore,finding a new species in these base enlarged,margin entire. Capitulasessile to . envlrOnmentS 1S not surprlslng. pedunculate,peduncles 0.5-1.5 cm long;involucre Recent collectingtrips were conductedby fac- of the capitulum7.7-13.7 mm tall, 5.7-13.4 mm ulty of the UniversidadeEstadual de Campinasfor wide withca. 6 to 8 series of phyllaries;phyllaries taxonomic,genetic, and ecologicalstudies on the 2-6.5 x 1.2-2.3 mm, the most externalovate, the interactionsbetween Asteraceae and phytophagous most internallinear, apex acute to acuminate,dis- insects.During those trips, a new,seemingly micro- tally villousas well as on the morelateral portions endemicspecies of Minasiawas foundin the Plan- of the abaxialface, glabrouson the proximalregion NOVON14: 233-235. 2004. This content downloaded from 143.106.1.143 on Thu, 24 Jul 2014 09:50:12 AM All use subject to JSTOR Terms and Conditions 234 Novon 3 s: . ': 8 . - ': ^E E s X F \ i, }/E ; \ ' @/ s So>nS '^: s ,j 'tS ''f's 'l-0 l: tV t -t ,1 At D 1 : Ln Figure1. Minasialewinsohnii J. Semir& F. F. Jesus. -A.Habit. B. Capitulum. C. Flower.-D. Anthers.- E. Achenewith pappus.Drawn from the holotype,PIC96696 (UEC). of the adaxialface, marginbarbellate, purple on lobes, sparsely so on the tube, tomentoseon the the middle,pale on the margins.Flowers 21 to 43 externalapex of the lobes, glabrousbelow; lobes per capitulum;corolla 7.1-10.6 mmlong, lavender 2.5-3.2 x 0.6 0.8 mm,lanceolate; anthers 2.94.2 to magenta, densely glandular-verrucouson the mm long, tails ca. 0.7 mmlong, apical appendages This content downloaded from 143.106.1.143 on Thu, 24 Jul 2014 09:50:12 AM All use subject to JSTOR Terms and Conditions Volume 14, Number 2 Semir & Jesus 235 2004 Minasia lewinsohnXifrom Brazil 0.S1.0 X 0.2-0.3 mm, triangularto sub-lanceo- curringon sand. The species is namedin honorof late, apexacute; style ca. 12 mmlong. Achene 2.2- Thomas Lewinsohn(Departamento de Zoologia, 3.5 mmlong, 0.8-1.5 mmdiam., ribbed, ca. 8 ribs, UniversidadeEstadual de Campinas),one of the sericeous to setuliferousindumentum, dense to firstcollectors of this population. sub-glabrescentthroughout the surface,sometimes Paratypes. BRAZIL.Minas Gerais: Diamantina,Es- denserat the base, glandularsurface; pappus bris- trada Guinda-S. Joao da Chapada, 18°09.58'S, tles 0.4-7.5 mm tall, in indistinguishableseries, 43°42.96'W,23 June2000 (fl, fr),K S. Yotokoet al. KSY- the most externalones graduallyshorter, lavender 00/112 (BHCB,UEC), 29 Apr. 1997, T M. Lewinsohnet to magenta,barbellate. al. in PIC97032(MBM, SP, UEC). Acknowledgments.We thank ThomasM. Lew- The species is comparablein generalsize both insohn, Paulo I. Prado,and Vera N. Solferinifor of rosette and inflorescence to Minasiapereirae collectionsand supportin the study of this genus; and M. splettiae.In inflorescenceheight it is also Angela B. Martinsfor the Latindiagnosis; Angela comparableto M. cabralensis;however, the rosette M. F. Pachecofor the drawings;Christina Muirhead leaves are shorterin M. Iewinsohnii(up to 9 cm for help with the Englishtext; Fabio A. Vittaand long)than in M. cabralensis(10-16 cm long),giving MarianaE. Mansanaresfor supportin the Depar- M. Iewinsohniithe appearanceof an overallsmaller tamentode Botanica(UEC); Karla S. Yotokoand plant.Minasia lewinsohnii is muchsmaller than M. AluanaG. Abreufor the collectionsin 2000; Har- alpestrisand M. scapigera,both of whichcan be up old Robinson(US), John Pruski (MO), and Victoria to 1 m tall. In additionto the differencein general C. Hollowell(MO) for criticalreviews of the man- size, the leaves in M. Iewinsohniiare linear to el- uscript;CNPq and FAPESP(98/05085-2) for finan- liptical,not oblanceolateas in M. alpestris,and the cial support.This study is partof the programBI- inflorescenceis not congestedlike the one in M. OTA/FAPESP,The VirtualInstitute of Biodiversity scapigera. (www.biota.org.br). The capitulain this new species maybe pedun- culate,as they generallyare in Minasiacabralensis, LiteratureCited but very rarelyin the other species of the genus. Giulietti,A. M.& J. R. Pirani.1988. Patternsof geograph- However,the peduncles are much shorterin M. ic distributionof someplant species from the Espinhac,o Range,Minas Gerais and Bahia,Brazil. Pp. 3949 in Iewinsohniithan in M. cabralensis(up to 1.5 cm vs. W.R. Heyer& P. E. Vanzolini(editors), Proceedings of up to 35 cm long). Also, the achene in M. Iewin- a Workshopon NeotropicalDistribution Patterns. Aca- sohnii has indumentumthroughout the surface, demiaBrasileira de Ciencias,Rio de Janeiro. whereasin M. cabralensisthe acheneis distallygla- Joly,A. B. 1970. Conhec,aa Vegetac,aoBrasileira. EDUSP & Polfgono,Sao Paulo. brous (Robinson,1996). Furthermore,the leaves Robinson,H. 1992. Noteson Lychnophorinaefrom Minas are shorterand morefleshy in M. Iewinsohniithan Gerais,Brazil, a synopsisof LychnophoriopsisSchultz- in M. cabralensis.To date, M. cabralensisseems to Bip., and the new generaAnteremanthus and Minasia be restrictedto the Serrado Cabralwhile M. Iew- (Vernonieae:Asteraceae). Proc. Biol. Soc. Wash.105: insohnii has been found only in the Planaltode 640-652. 1995. New combinationsand new species in Diamantina.Minasia lewinsohniidiffers from M. AmericanVernonieae (Asteraceae). Phytologia 78: 384- splettiaein having wider and thicker leaves and 399. fromM. pereiraein havinglinear to elliptic rather . 1996. A new species of Minasiafrom the Serra than oblanceolateleaves. do Cabral,Minas Gerais,Brazil (Vernonieae; Astera- ceae). Phytologia80: 350-351. To date, Minasialewinsohnii is knownonly from . 1999. Generic and subtribalclassification of one population,in the Planaltode Diamantina,oc- AmericanVernonieae. Smithsonian Contr. Bot. 89. 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