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Taxonomic Novelties in Rauvolfia (Apocynaceae, Rauvolfioideae) from Brazil Novon 17: 462-471. Volume 17, Number 4 Koch et al. 469 2007 Rauvolfia (Apocynaceae) from Brazil region (Brazilian state of Minas Gerais), in forests located at the Rio Doce Basin and by a single A Rauvolfia grandiflora Martins ex A. DC. habitu collector. This suggests that the collections were made altitudine altiore, nodo verticillato in ramis floriferis unico, other collections may place this species at a high extinction risk. Relationships. Rauvolfia pruinosifolia differs from Tree, 10-15 m tall; branches 3 or 4 on each whorl, R. grandiflora with a tree height of 10—15 m (there is slightly lenticellate, younger branches dark brown, older branches paler brown; short internodes with individual), and there is only one leaf whorl on tcraiatanpghuyllalrs caabtoavpeh ylelas chi ncaoltnesrpniactueo unso, dec a.o f 1.l5e amvems;; floriferous branches. It shows strongly anisophyllous the largest associated leaf, with flowers that have Leaves strongly anisophyllous, 4 or 5 on each node, the corolla lobes to 2.5 mm long. Rauvolfia grandiflora smaller ones less than 1/2 the size of the larger ones; bears more than one leaf whorl on the floriferous larger leaves 7-9.6(-12) X 2.5-3(-5) cm, petiole sessile or to 1.6 mm; smaller leaves 2.5-4.8 X 1- inflorescences that are slightly shorter to longer than the largest associated leaf, with flowers that brous on both faces but pruinose in adaxial surface, have corolla lobes 4—8 mm long. Moreover, plants elliptical to obovalc-clliptical, apex acute to cuspi¬ of R. grandiflora commonly form shrubs or small date, base attenuate, margin slightly revolute; primary vein narrow, conspicuous on both blade faces, Etymology. Individuals of Rauvolfia pruinosifolia 3-7 mm distant each from other, curved toward the present epicuticular wax crystals that occur as margins, 9 to 14 pairs. Inflorescences pleiochasial, whorled, between the petioles of whorled leaves, at the al., 1998) have revealed that such wax crystals are not end of branches, 1/3 to 1/2 the size of largest associated found in any other Neotropical species of R< o a leaf, lax, 6 to 12 flowers; peduncle 2-3 cm; bracteoles These waxes give the leaf a whitish powdery aspect, triangular, ca. 1 mm, with toothed margins; pedicel 4- 6 mm; upper part of flower buds broadened, oval to chosen for this species. glandular, green; corolla hypocrateriform, white with red spots on the lobes; tube ca. 15X2 mm, broadened 7. Rauvolfia weddelliana Muller Argoviensis, in in the upper 1/3, constricted below the throat at the Martius. FI. Bras. 6(1): 32. 1860. TYPE: Brazil. nthe style head, pubescent inside with “Entre Goias e Cuiaba,” Weddell 2966 (lecto- type, designated by Rao, 1956: 331, P not seen; isotype, F). anthers (0.5 Rauvonlofiva. sTeYssPilEif:o liBar aSz.i l.M Mooarteo, JG. roBsosto. : 4S2a: n1t'0A3n. n1a9 0d4a. CShyan-. with rounded apex; anthers pada, Robert 494 (holotype, BM; isotype, BM photo at apex shortly below the orifice of the corolla tube, base NY [676]). tcouurcvheidn, g1 t/h3e tahpei csaizl ea popfe tnhdea gaensth oefr ss tyalned h ecaadll;o fuisla mat etnhtes R. Iwn eRddaeol’lsi arneav iwsieorne k(1e9p5t 6s)e, pRaraautveo alfltiha osuegshsi ltihfoe liaau tahnodr uaob0 vap.4masp ereemy,r m mswbmu rihbtaaihgnrg lgahoica,bn e o aosrntueohns,uau ntcls adakrh.ei .rdi td1F .ear3asut p mitetth xhmne;eo , btsn aaysepsencepect;nae arn.sr iptdfyeoalrugeo seuc ssao .na ldn5yid. s8a c t wm tcimhtahe.; Rwusssppun.e geeddccgsediieermmess lstleesiRilnn ai. sfn ho oaiolsfw.i faRB e.ib .dny od tLsteaeehannls tltaseisiilaorply,nine zfac oiR,nil teiogaas o a,,t fshwttyee(hnih rento iyi cnrpeh ysxec cm haohmmienez tdaeiiint.n de,i ueRnroinRg.a ut lois sfba eiteehmnsrdesdtoi lraoip4ftsthoy9 liolpR4ei¬ea.r) logical variation could be verified herein. The cies were collected only in the Governador Valadares 470 Novon 471