1957] 



THE BOTANY OF THE GUAYANA HIGHLAND—PART II 



327 



medium latissima, basi et apice breviter acuta, interdum cuspide brevi obtusius- 

 cula instructa, 8-12 cm longa et 2-4 cm lata; costa supra paulo impressa, subtus 

 valde elevata; nervi laterales tenues, utrinque 12-18, angulo fere 90° exeuntes, 

 ca. 2 mm intra marginem arcuatim conjuncti. F lores solitarii; pedicelli curvati, 

 ca. 8 mm longi, prope basin bractea amplectente ca. 2 mm longa instructi. Sepala 

 libera, membranacea, acuta, ovata, extus densissime stellato-lepidota, intus 

 cinereo-tomentella et basin versus glabra, 1.5 cm longa et 1-1.2 cm lata. Petala 

 extus densissime argenteo-lepidota, intus sursum pilis stellatis tomentosis 

 ceterumque glabra 5 exteriora ovata obtusa ca. 3 cm longa et. 1.2 cm lata, interiora 

 conspicue angustiora. lineari-oblonga. acuta 5 3 cm longa et. 0.6 cm lata. Fructus 

 globosus 5 ca. 2 cm diam.; carpidia basin versus glabra 5 apice pyramidata acuta 

 et cinereo-lutescenti-tomentella. 



TYPE: VENEZUELA: Rio Guaima, in sabanita 1 km east of Maroa, elev. 125 

 m, April. 16, 1953, Bassett Maguire & John J. WuTdack 35683 (NY). 



The narrow inner petals place this species in section Heteropetalum R.E.Fr., 

 where it is most closely related to D. venezuelana. From this it differs by the 

 larger, basally acute leaves and by the narrower inner petals. 



Duguetia tenuis R.E.Fr., sp. nov. 



Arbor; ramuli tenues flexiles, juniores pilis stellatis patentibus instructi. 

 Petiolus 1-2 mm longus; lamina membranacea, concolor, supra laevis et costa 

 stellato-hirsuta glabrescenti excepta glaberrima, subtus primo pilis stellatis 

 flavescentibus hirsuta, mox fere omnino glabra, lanceolata vel anguste obovata, 

 ad. medium vel paulo supra medium latissima, basin versus angustata, ima basi 

 paulo inaequilateralis, uno latere acuto, altero plus minus obtuso, apice in cuspi- 

 dem 1-1.5 cm longam et vulgo obtusam sat sensim contracta, (6-) 8-9 cm longa et 

 1.5-3 cm lata; costa supra impressa, subtus prominens; nervi laterales tenues, 

 supra parum conspicui, subtus prominuli et reticulum laxum formantes. Sepala 

 extus incano-tomentella, ovata, 15 mm longa et ca. 8 mm lata. Petala ca. 12 mm 

 longa et 8 mm lata, exteriora ovata acuta, interiora oblonga. Stamina 2 mm longa, 

 connectivi appendice conico-acuminata. Fructus (immaturus) 1 cm diam.; mono* 

 carpia glaberrima, in acumen longum subito contracta. 



TYPE: BRITISH GUIANA: Issinoru Creek, Maz. R., in Morabucoa forest on red 

 lateritic soil, March 4, 1949, Forest Department Field No. F 2860 (Record No. 

 6007), (NY). 



Duguetia tenuis belongs to section Alcmene and is closely related to D. 

 neglecta Sandw. It differs from this by smaller and comparatively narrower leaves 

 with less marked cusp and less rounded base. The flowers seem to be smaller 

 but perhaps are not fully developed on the material available. 



Ephedranthus fragrans R.E.Fr., sp. nov. 



Arbor ca. 15m alta; ramuli novelli glabri, vetustiores cinereo-corticati; inter- 

 nodia 1.5-2 cm longa. Petiolus 8-12 mm longus, glaber et nigrescens, sursum 

 canaliculars; lamina membranaceo-chartacea, ab initio glaberrima, elliptica, ad 

 medium latissima, basi acuta et conspicue decurrens, apice in cuspidem obtusam 

 ca. 1.5 cm longam contracta, 12-14 cm longa et 5-6 cm lata; costa utrinque 

 elevata; nervi laterales angulo acuto exeuntes, sursum curvati; reticulum venu- 

 larum densum, utrinque prominulum. Flores (masculi solum obvii) albidi, fra- 

 grantes, ex axillis foliorum delapsorum exeuntes, solitarii vel pauci; pedicelli 

 rigidi, 5-8 mm longi, ut sepala petalaque brevissime cinereo-sericei, bracteis 

 nunnullis (ca. 3) infra medium instructi. Sepala reniformia, 1.5-2 mm longa, 3 

 mm lata. Petala tenuia, ovato-oblonga, apice rotundata, 10-15 mm longa, interiora 



