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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



I 



The large petal with four reduced ones places this species near D. froesii 

 Ducke, from which it differs in number of pairs of leaflets, their shape and size, 

 and the shape of the single complete petal. 



The specific epithet will perhaps not please everyone, but geographic names 

 used as specific names seem appropriate when the species involved are rather 

 close endemics. It may be a little premature to speak of the geographic distribu- 

 tion in this genus, but the species appear to be quite localized in occurrence. 



8. Dicymbe froesii Ducke, Trop. Woods 90: 14. 1947. 



The unijugate leaves with larger leaflets, the villose filaments and petals, 

 and the shape of the one complete petal separate this species readily from its 

 only near relative, D. yutajensis. The geographic disjunction between the two 

 species is rather wide; the latter is from a sandstone mountain and it is likely 

 that D. froesii is either to be found on sandstone or on sands derived from such 

 sandstone mountains. Ducke related D. froesii to D. corymbosa but there is little 

 more than a superficial resemblance between the leaves of the two species. Only 

 an isotype has been seen. 



IV. Section Apoxypetala Cowan, sect. nov. 



A sectione Eremopetala petalis omnibus haud expansis differt. 

 TYPE species: Dicymbe uaiparuensis Cowan. 



9. Dicymbe uaiparuensis Cowan, sp. nov. 



Arbor 10 m alta, ramulis glabris, stipulis caducis non visis. Folia 5-jugata, 

 glabra, petiolis 1.5 cm longis, teretibus, rachibus 8 cm longis; petiolulis 7 mm 

 longis; foliolorum laminae lato-ovatae, coriaceae, 7-9.5 cm longae, 4.5-6 cm 

 latae, ad basim cordatae, ad apicem acuminatae, extremitate obtusa, obscure 

 minuteque venulosae, costa plana supra, infra salienti. Inflorescentiae terminales, 

 composito-corymbosae, strigulosae, G-\0 cm longae, pedunculo 7-15 mm longo, 

 bracteis caducis, non visis; pedicellis 17-25 mm longis, dense strigulosis, 

 bracteolis strigulosis, coriaceis, ellipticis, 12 mm longis,- 7 mm latis, ad apicem 

 glande 1.5 mm longa, umbilicata praeditis, prope hypanthii apicem adhaerentibus. 

 Hypanthium cylindricum, ca. 8 mm longum, strigulosum; sepala 5, anguste elliptico- 

 oblonga, acuta ad acuminata, 9.5" 12 mm longa, 1.2-2 mm lata, glabra; petaia 5, 

 aequalia, anguste elliptico-oblonga, acuta ad acuminata, dense villosa. Stamina 



10. libera, filamentis ca. 24 mm longis, villosis ad basim latiorque, subulatis, 

 antheris 3.5 mm longis, 1.5 mm latis, ovali-oblongis. Stigma peltatum; stylus ad 

 basim dense strigosus; ovarium 5 mm longum, 2 mm latum, dense strigosum, 

 stipite ad hypanthii murum adnato, parte libera ca. 1 mm longa, strigulosa. 



fYPE: Arbol 10 m alto. Lomas de arenizca entre el cerro Perai, y las fuentes 

 del Rio Uaiparu, afluente del Ikabaru, 900 m, Caroni, Estado Bolivar, Venezuela, 

 F. Cardona 1886 (NY; isotype VEN). 



This species can be compared only to D. duidae, the only other species in 

 this subgenus; the important differences separating them are set out in the key. 

 The large apical gland on each of the bracteoles of the new species is espe- 

 cially striking and the larger number of pairs of leaflets is a useful character- 

 istic to separate the two species. 



10. Dicymbe duidae Cowan, sp. nov. 



Arbor 4-7 m alta, glabra, ramulis fuscis, stipulis non visis, caducis. Folia 

 paripinnata, bijugata, glabra, petiolis 10-20 mm longis, teretibus, rachibus 

 15-20(-35) mm longis; petiolulis 2.5-5 mm longis, foliolorum laminae lato-ovatae, 

 coriaceae, 6-11.5 cm longae, 3.5-7.0 cm latae, ad basim cordatae, ad apicem 



