Type: Shrub 1.5-3 m, inflorescence branches red-tinged, flowers white, fruit
reddish, frequent on escarpment slopes above Camp 3, Cerro de la Neblina, Terr.
Amazonas, Venezuela, elev. 1600-1700 m, 17 Nov 1957, Bassett Maguire, John J.
Wurdack, & Celia K. Maguire 42030 (holotype U S 2342601). Paratypes. VENEZUELA,
Edo. Bolivar. Cerro La Danta: flla between kms 125 and 127, alt.
1200 m, Steyermark & Nilsson 184. Sororopan-tepui: summit, alt. 1800 m,
Maguire & Wurdack 33953. Chimanta Massif: waterfall course between northwestern
part of Abacapa-tepui and Apacara-tepui, alt. 1200-1600 m, Steyermark
75145; base of escarpment, Torono-tepui, alt. 1700 m, Steyermark 75488; slope
forest of main section between Apacara-tepui and Torono-tepui, alt. 1400-1700 m,
Steyermark 76000, Steyermark & Wurdack 1243; escarpment base, Amuri-tepui,
Steyermark d; Wurdack 1335. Cerro Guaiquinima: slope forest near Intermediate
Camp, alt. 1200 m, Maguire 33106.
The typical subspecies, known only from the Kaieteur Gorge, has subulate
external calyx teeth 1.8 mm long and the ovary apex with a lobulate corona
tipped with numerous glandular hairs 0.3-0.5 mm long. A n isotype of the Potaro
endemic (Sandwith 1268, NY) shows some gland-tipped hairs on the external
calyx teeth, as well as incurved-setose stem and inflorescence pubescence; however
the topotypical Maguire & Fanshawe 23075 lacks glandular calyx hairs and has
appressed stem and inflorescence indument. In subsp. tepuiensis, there is similar
variability in the degree of hair appression; there also is variability in the density
of the lower leaf surface hairs, some of the paratypes being sericeous-strigose
but with no concomitant floral differentiation.