180 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [ VOL. 10 



isomorphica ; filamenta 2.8-2.9 mm longa ; antherarum theeae 2.7 mm Longae vix 

 curvatae obscure convolutae apice centraliter uniporosae, poro 0.1-0.15 mm diam, 

 connectivo non prolongato basi dorsaliter dente oblongo hebeti interdum cum 

 setula 0.2-0.3 mm longa terminato. Stylus 4.5 X 0.4 mm ; stigma expansum 0.7 

 mm diam; ovarium 3-loculare 3/4-inferum apice in collum lobulatum 0.2 mm 

 altum sparsissime glanduloso-setulosum (setulis 0.1 mm longis) circum stylum 

 protractum. Semina numerosa vix immatura 0.6 X 0.3-0.35 mm obcuneata druse 

 prominenterque muriculata. 



Type. Buds white, fruit red, frequent on slopes of Mt. Ayanganna, Pakaraima 

 Mts., British Guiana, alt. 1000-1500 m, 5-6 Feb 1955, Bassett Maguire, W. M. C. 

 Bagshaw, & Celia K. Maguire 40572 (holotype US 2342568). Paratypes. BRIT- 

 ISH GUIANA, Pakaraima Mts. Membaru-Kurupung trail: alt. 1000 m, Maguire 

 & Fanshawe 32352. Mahdia River valley ; Mt. Ebeni, alt. 700 m, Maguire 32120. 

 VENEZUELA, Edo. Bolivar. Cerro La Danta: headwaters of Rio Venamo, alt, 

 1040-1060 m, Steyermark d' Nilsson 37. Chimanta Massif: Abacapa-tepui, Steyer- 

 mark 74818. 



Of the 10 available flowers in the various collections, 7 were 7-merous and 3 

 were 6-merous. In overall features, no other species of Clidemia is suggestive of 

 very close relationship with C. h< ptana ra . Ajaiong the myrmecophilous species, 

 perhaps the 5-merous C. hetcrophyUa (Desr.) 61. and C. juruensis Pilger are 

 closest, but neither has the barbellate (not stellate) hairs of the Guayana species. 

 The flowers suggest no close affinity with Myrmidont . Maieta, Microphysca, or 

 Tococa; the barbellate hairs are approximated in the anomalous and heterogenous 

 Tococa species-group of T. broadwayi Urb., T. grandifolia Standi., T. spadiciflora 

 Tr., and T. platyphylla Benth., all of which show no inflorescence or floral resem- 

 blance to C. hcptamera. 



■ 



Clidemia siapensis AVurdack, sp. nov. 



A speciebus 26-33 Monographim' Cogniauxii differt foliis planis supra et 

 subtus modice stellato-puberulis pilis glandulosis sparsissime intermixtis. 



Frutex 1-2 m; ramuli teretes petiolis inflorescentiisque dense pilis stellatis 

 sessilibus vel usque ad 2 mm stipitatis obsiti pilis glanduliferis ca. 0.3-0.5 mm 

 longis sparse intermixtis. Folia in dimensionibus vix disparilia; petioli 1.5-4 cm; 

 lamina 4.5-16 X 2.8-9 cm oblongo-ovata apice vix (ca. 0.5-1 cm) subabrupteque 

 hebeti-acuminata basi vix (2-4 mm) cordata membranacea supra et subtus modice 

 stellatOj-puberula pilis ad 0.15 mm stipitatis pilis glanduliferis 0.3-0.7 mm longis 

 sparsissime intermixtis 7- vel sub-9-nervata nervis secundariis ca. 5-8 mm inter 

 se distantibus nervulis non vel vix anastomosantibus ad margines remote crenu- 

 lato-serrulata (dentibus ca. 2-3 mm inter se distantibus) et sparse patenti-ciliata 

 ciliis caduce glanduliferis. Panicula ad 5 cm longa oblongo-pyramidata submulti- 

 flora ; flores 5-meri sessiles vel ad 5 mm pedicellati ; bracteolae ca. 0.5 mm longae 

 lineares sparse stellato-furfuraceae ad hypanthii basim insertae caducae. Hy- 

 panthium (ad torum) 3 X 2.5 mm dense stellato-puberulum pilis sessilibus vel 

 vix (0.1 mm) stipitatis et apicem versus sparse glanduloso-setulosum; calycis 

 tubus 1 mm altus, lobis interioribus 1.5 X 2.5 mm obverse ellipticis apice rotun- 

 datis extus dense et intus sparse stellato-puberulis, dentibus exterioribus ca. 0.5 

 mm eminpntibus oblongis modice stellato-puberulis et extus sparse glanduloso- 

 setulosis. Petala 4.5-5 X 3 mm obovato-oblonga apice vix emarginata. Stamina 

 vix dimorphica; filamenta 2.9-3.3 mm longa; antherarum thecae 2.8-3 vel 1.8-2.2 

 mm lanceolatae vix curvatae convolutae basi rotundatae, connectivo non pro- 



