78 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



1951). The variety also occurs in British Guiana: Caburi Falls^ Paruni R.. Jen- 

 mam 7624 (U) ; Mazaruni R., Forest Depi. 7142 (NY, U). 



In the lowlands of southern Venezuela this species is represented by the 

 following variety, indistinguishable from the plant of British Guiana and Suri- 

 name except by the nearly featureless leaves. 



Calypthranthes pullei Amshoff, var. immaculata McYaugh, var. nov. Var. pullet 

 valde similis, sed distincta : foliis obscure obsoleteque punctatis, glandulis min- 

 utis, 8-10/mm 2 . 



In this variety the leaves are green above, usually without any indication of 

 impressed glandular dots; the Lower surface is paler, with no glandular dots 

 apparent or with these pale and obscure, never dark and prominent as in var. 

 pullei. 



VENEZUELA: Bolivar, Alto Rio Paragua : Salto Guaiquinima, elevation 265 m, April 



12, 1943, Felix Cardona 513 (US) ; Cerro Perro, in sandstone sabanas, Cardona 738, July 1943 

 (US); Eaudal Guaiquinima, elevation 300 m, July 20, 1944, Cardona 1083 (F; US, type); 

 same locality and date, Cardona 1086 (US) ; between Bio Torono and Salto de Auraima, ele- 

 vation 275 m, Killip 37537, April 17, 1943 (F, US). Amazonas: Orinoco R., between Tama- 

 tama and S. Fernando de Atabapo, elevation 100 m, Sept 7, 1944, J. A. SteycrmarTc 58422 

 (F, U) ; Rio Orinoco, between mouth of Rio Atabapo and mouth of Rio Ventuari, elevation 

 150 m, Sept 6, 1954, J. Silverio Level 124 (MICH). 



13. Calyptranthes smithii McVaugh, sp. nov. 



Arbor grandis, appivsse pubescens vel velutina; paniculis petiolis ramulisque 

 novellis, pilis runs lucidis partim dibrachiatis 0.5-1 mm longis, obsitis; ramulis 

 exalatis; foliis 9-12 cm longis acuminatis; petiolis 10-12 mm longis; paniculis 

 immaturis 2 cm longis, 20-floris, conspicue bracteatis, ramulis lateralibus vix 

 evolutis, pedunculo fere nullo ; alabastris 3-3.5 mm longis, clausis, basi velutinis. 



Tree 20 m high, the branchlets, inflorescence, petioles, and young growth 

 appressed-pubescent or velutinous with reddish-brown lustrous partly dibrachiate 

 hairs 0.5-1 mm long; leaves elliptic-ovate, coriaceous, 3.5-4.5 cm wide, 9-12 cm 

 long, 2.6-3 times as long as wide, acuminate, acute to rounded at the base, the 

 margins decurrent on the petiole 1.5 mm thick, 10-12 mm long; midvein flat or 

 channeled above, prominent beneath ; lateral veins fine and closely parallel, 20-25 

 pairs but the number indefinite because of numerous intermediates, inconspicu- 

 ous on the upper surface, evident beneath ; marginal vein about equaling the 

 laterals, about 0.5 mm from the margin; leaves glabrous and lustrous above, 

 impressed-^unctate or the glands visible in the translucent surface, the veins not 

 elevated above the surface in drying; lower surface somewhat persistently 

 pubescent, paler, sparingly dotted ; inflorescence axillary, in bud stout, the paired 

 panicles 2 em long, the longest internode 1 cm long, the branches coarsely 

 bracteate, the bracts boat-shaped, persistent, 2.5 mm wide, 4 mm long, blunt- 

 pointed ; bracteoles lanceolate, 1.5 mm long; flowers about 20 in each panicle; 

 buds 3-3.5 mm long, 2-2.5 mm thick, obovoid to subglobose, abruptly short- 

 apieulate, thinly appressed-pubescent and at least the base persistently velutin- 

 ous; ealyx probably calyptrate ; hypanthium glabrous within, produced 2 mm 

 beyond the summit of the ovary; style not seen expanded; stamens about 150, 4 

 mm long, the anthers 0.5 mm long; petals none; functionally pistillate flowers 

 not seen. 



RRTTTSH GUIANA: Basin of Essequibo River, near mouth of Onoro Creek, lat. ca. 

 1°35' N., dense forest, along river, Dec 15-24, 1937, A. C. Smith 2643 (NY, type). 



