Copyright (c) American Society for Taxonomists. All rights reserved. Delivered by Ingenta to IP: 192.168.39.210 on: Sat, 25 Sep 2021 12:56:02 1. Corolla lobes1–1.8mmlong . . 1. Corolla lobes3–5mmlong Key isbaseon Fontella-Pereira andFerreira (2005) . DOI 10.1600/036364411X553225 © Copyright2011 bythe American SocietyofPlantTaxonomists Systematic Botany key proposed by Fontella-Pereira andFerreira (2005) . is describedhere asnewandplacedwithintheidentification “cucullate corona” speciesgroup. have revealed anewspeciesof Gerais, andinparticularto“SerraNegra,”RioPreto County, Recent expeditionstothemountainchainsofSouthMinas and bythebarbellatecorolla, atleastthebaseoflobes. Ferreira bythepresence ofcucullateexternalcorona segments, Fontella &M.V. Ferreira, and Malme var. key, theauthorsgrouped for theBrazilianspeciesof up to1,600m( Fontella-Pereira andFerreira 2005 ). tributed alongthe Atlantic Forest andCerrado,from sealevel Most ofthespecies from Bolivia,and Shield ( Funk etal.2007 ), 13 species. external segmentsthatare almostentirely connate). Fontella &E.Schwarz,inwhichthecorona isdoublewith presence ofasimplecorona (exceptin and axillary oppositepositionare alsofoundin the baseandabarbellatecorolla throat. Inflorescences withan listed othernotablefeatures, suchascorona lobesconnateat Fournier (1885) recognized thisdistinctgroup ofspeciesand within thegenus,suchasaxillaryoppositeinflorescence. on some Te ecito o of description The Fontella-Pereira andFerreira (2005) produced amonograph Macroditassa A e Seis f of Species New A 2. Outerlobesofthecorona . . plain(notcucullate)

. 2. Outerlobesofthecorona cucullateadaxially, atleastthebase the outerlobes. guished from phologically related to Jobinia . . 3. Outerlobesofthecorona aslongorlongerthanthegynostegium . 3. Outerlobesofthecorona lowerthanthegynostegium Keywords— Abstract— Rio deJaneiro. QuintadaBoaVista s/n°,SãoCristóvão,CEP 20.940-040, RiodeJaneiro, RiodeJaneiro, Brazil.

2 Núcleo emEcologiaeDesenvolvimentoSócio-AmbientaldeMacaé,UniversidadeFederaldoRioJaneiro, 4. Corolla throat barbellate; innerlobesofthecorona 1–2×0.5–0.7mm,notcucullate,lanceolateandunfoldedatthe ap 4. Corolla entirely papillose;innerlobesofthecorona 0.5×1mmlong,abaxiallycucullatewithaninflexedapex . Ditassa , butthesegeneradiffer from Macroditassa carolina (2011), 36(1):pp.137–140 lagoensis . 5. Outerlobesofthecorona 2.5–3mmlong 5. Outerlobesofthecorona 4.5–5mmlong,uptotwotimes longerthangynostegium . isaNeotropical ,nowrepresented by Macroditassa mantiqueirae M. lagoensis speciesthathaveunusualcharacteristics tatc oet, boiest eatlaia ln txnm otesen Brazil. southeastern taxonomy , plant Metastelmatinae, biodiversity , forest , Atlantic M. violascens 1 Macroditassa , Programa dePós-GraduaçãoemBotânica,MuseuNacional,UniversidadeFederaldo Macroditassa M. lagoensis M. lagoensis ad and Macroditassa M. tassadioides Macroditassa lagoensis Macroditassa M. marianae Caixa Postal119331, CEP 27910-970,Macaé,RiodeJaneiro, Brazil (Schltr.) Malmeisfrom Peru. MorillooccursintheGuiana Macroditassa M. marianae by Malme (1927) wasbased and occurinBrazil,andare dis- aoia . Matozinhos, N. Carolina a. var. Macroditassa mantiqueirae M. marianae

3 , anewspeciesof - from MinasGerais,Brazil,ispresented. Itismor- Author forcorrespondence ( [email protected] ) bythepresence ofpapillosecorolla lobes,innercorona lobescucullate,andbytheinflexedapexof Peplonia asteria . Intheidentification cucullata Macroditassa (Schltr.) Malmeis M. adnata Communicating Editor:FernandoZuluoaga Fontella&M.V. Peplonia , belongingtothe (Apocynaceae-Asclepiadoideae)fromMinasGerais,Brazil Ky o rzla Brazilian to Key becauseofthepresence ofcucullatecorona lobes. E Fourn.) (E. (E.Fourn.) (E.Fourn.)Malme; , , Orthosia bythe (Vell.) ,

137 1 n ain U P Konno P. U. Tatiana and pollinia 0.40×0.09–0.13mm,oblong.Fruits notseen. Figure 1 . 0.09 ×0.09–0.13mm,ascendent,reticulated membranepresent; Corpusculum 0.18×0.11–0.13 mm,oblong;translatorarms0.06– apical appendagesmembranaceous,suborbicular, inflexed. sile, capitateatapex. Anthers 1–2×1.5–2mm,quadrangular, abaxially, apexinflexed.Gynostegium 1.5–2.1 mmlong,ses- lobes smallerthanthegynostegium,ca.0.5×1mm,cucullate as thegynostegium,apexentire, cucullateadaxially;inner ullate lobes,outerlobesca.2.3×1.4mm,lanceolate,aslong 3.4 ×1.5mm,ovate,reflexed. Gynostegialcorona withcuc- late, abaxiallyglabrous, adaxially entirely papillose,lobesca. adaxially present atthebase ofeachsinus;corolla campanu- 0.5 mm,abaxiallybrownish, margin hyalineandciliate;glands 0.5–0.7 cmlong,glabrous. Calyxdeeplylobed,lobesca.1.5× late, ciliatedatmargins. Flowers whitishtolightpink;pedicels cles 1.5–2cmlong,glabrous; floralbracts2–3,small,lanceo- umbelliform cyme,axillary, opposite,4–5-flowered; pedun- margin entire; 1–2glandsatpetiolejuncture. Inflorescence an brous, apexacuminate-mucronate, baseatenuatetoobtuse, glabrous; blade4.3–6.8× 1–1.5 cm,elliptictolanceolate,gla- riaceous, slightlyreflexed; petioles5–9mmlong,canaliculate, coronae phyllisinterioribus cucullatisetapiceinflexis. lata aquibusimprimisdiffert corolla adaxialiterpapillosaet Macroditassamantiqueirae M M.laurifolia M. laxa Vines; stemsglabrous, brownish. Leavesopposite,subco- Species nova abaffinibus ACRODITASSA ...... 2 . da Égua,3Jun2006,fl., mun. RioPreto, Funil,trilha paraaCachoeiradoNinho sp. nov.—TYPE: BRAZIL.MinasGerais:SerraNegra, (Malme)Fontella &deLamare and (Decne.)Fontella and

M. grandiflora

aooi Treatment Taxonomic 3 ...... Macroditassa mantiqueirae 2 4 . . (E.Fourn.)Malme; , 3

MatozinhosandT. U.P. Konno, Konno etal.868 Macroditassis M. morilloana M. melantha . . Fontella&M.V. Ferreira M. lagoensis M. lagoensis cumcorona cucul- ...... M. macrophylla (holotype:CESJ). x ...... 5 ex . canbedistin- (ivia Rapini (Silveira) M. mantiqueirae var. var. M. marianae cucullata lagoensis Malme;

Copyright (c) American Society for Plant Taxonomists. All rights reserved. Delivered by Ingenta to IP: 192.168.39.210 on: Sat, 25 Sep 2021 12:56:02 All drawnfrom thetype. [Volume 36 SYSTEMATIC BOTANY 138 Fig. 1. 1. Macroditassa mantiqueirae . A. Habit.B.Flower. C.Gynostegium.D.Corona segments.E.Pollinarium,ventralside.F. Pollinarium, dorsalside. Copyright (c) American Society for Plant Taxonomists. All rights reserved. Delivered by Ingenta to IP: 192.168.39.210 on: Sat, 25 Sep 2021 12:56:02 M.mantiqueirae Serra doMaranddaMantiqueira,atapproximately in southeasternBrazil,especiallythe Atlantic Forest along the apexcompletelyfoldedinwards. corona lobesare alsounique,andare cucullateadaxiallywith are entirely papillose(vs.corolla throat barbellate).Theinner cies of 139 M.marianae MATOZINHOS AND KONNO: MACRODITASSA MANTIQUEIRAE M.lagoensis 2011] M.lagoensis Fig. All ofthecucullatespecies Macroditassa mantiqueirae Table 2 2. Distribution mapof Macroditassa hrces efbaePdnl Corolla throat Peduncle Leafblade Characters . oprtv mrhlg o of morphology Comparative 1. Taxa a. var. a. var.

0509c 4.3–6.8cmlong 0.5–0.9cm lagoensis cucullata mainlybythecorolla tubeandlobesthat

0823c 5–13.2cmlong 0.8–2.3cm 1.2–1.5 cm 0.9–2 cm (cm long) Petiole

Macroditassa differs from othercucullatespe- Macroditassa 5.3–8.1 cmlong 4.5–13.2 cmlong Macroditassa mantiqueirae subcoriaceous chartaceous membranaceous subcoriaceous species. A. Rangeofdistribution the Brazilianspecies.B.Distribution ofthe“cucullategroup” species.

(Tbe occur 1) (Table .–. mbreaeStrongly cucullate,uptotwice barbelate 0.4–0.7 cm .– mppls Strongly cucullate,slightly papilose 1.5–2 cm 0.8–2 cm 0.3–1.5 cm

anditsrelated cucullatespeciesbasedon Fontella-Pereira &Ferreira (2005) .

barbellate barbelate particular tothe inga”). Thetaxonomiclimitsofthismorphologicalgroup, in been registered from sandycoastalplainvegetation(“rest- 400–1,300 mabovesealevel( Fig. 2 ). Only of newtaxa,suchas taxonomic boundariesbetweenspeciesandtheidentification herbaria collectionsare crucial toa better understandingof records (vide Matozinhos andKonno2008 ) supplementing Sligthly cucullate,shorterthan Slightly cucullate,uptothree times as longthegynostegium longer thangynostegium gynostegium as longthegynostegium M. lagoensis Outer segments M. mantiqueirae varietiesare stillunclear. New Corona . Plain, apexunfolded Abaxially cucullate,apex Plain, apexunfolded Plain, apexunfolded adaxially folded M. marianae Inner segments has Copyright (c) American Society for Plant Taxonomists. All rights reserved. Delivered by Ingenta to IP: 192.168.39.210 on: Sat, 25 Sep 2021 12:56:02 4 SSEAI OAY [Volume 36 SYSTEMATIC BOTANY gênero O 2005. Ferreira . V. M. and J. Fontella-Pereira, de Janeiro MasterFellowship. Miguez deMello(CENPES-PETROBRÁS)/UniversidadeFederaldoRio CNM bytheCentro dePesquisaseDesenvolvimentoLeopoldo Américo a PesquisadoEstadoRiodeJaneiro (Proc. E-26/170836/2006)and translation ofthediagnosis.TKwassupportedbyFundaçãode Amparo Neto forthelinedrawings;andJorge FontellaPereira foradviseandLatin the curatorofCESJherbariumforhelpwithfieldtrips;LuizMenini 140 Acknowledgments. (Apocynaceae-Asclepiadoideae) noBrasil . The authorsare gratefultoFatimaSalimena, ieaue Cited Literature Bonplandia 4 7–34. 14: Macroditassa

Mtzno, . . n T U P Kno . 20 pcnca sv. a Reserva na s.vl. Apocynaceae 2008. Konno. collectae. P. U. Paraná T. and in N. C. dusenianae Matozinhos, Asclepiadaceae 1927. A. O. G. Alexander . Malme, N. S. and Kelloff , C. Berry , E. P. Hollowell, T. V., Funk, in 189–332 Pp. Asclepiadaceae. 1885. E. Fournier, Rodriguésia Biológica daRepresa doGrama,Descoberto,MinasGerais,Brasil . ArkivförBotanik 1 –584. Guiana) . Amazonas, Bolivar, Delta Amacuro; Guyana,Surinam,French 2007 Wien, München, Urban. . I. and Checklist oftheplantsGuianaShield(Venezuela: Eichler , E. A. Leipzig: F. Fleicher Martius, . von P. F. C. eds. Contributions from theUnitedStatesNationalHerbarium 9 87–98. 59: 2: 1–48. 12A: Flora Brasiliensis , 6(4), , 55: 55: