1957] 



THE BOTANY OF THE GUAYANA HIGHLAND— PART II 



323 



subcoriaceous, dull green above, paler dull green below, peduncle dull green; spikes 

 ascending, greenish white, 4-6 mm diam., Julian A. Steyermark & John J. Wurdack 1197 

 (F, NY); climbing on tree trunk, summit, along Cano Mojado, between base of upper falls 

 and drop to escarpment, alt. 1895-1910 m, Feb. 23, 1955, lvs. chartaceous, dark green 

 above, pale dull green below with impressed darker green veins, spikes erect, greenish 

 white, 2.5 mm diam., Julian A, Steyermark & John J Wurdack 1071 (F, NY). 



The trailing or scandent habit of growth, leaf shape, type of indument, etc. 

 characterize this species. There is no evidence that the ovaries or drupes would 

 be stylose. The immature spikes make it impossible to determine with certainty 

 its relationship with other species. It resembles P. hostmannianum (Miq.) CDC. 

 to a slight extent but differs in its smaller leaves, shorter [?] spikes, and type 

 of indument. 



Peperomia cladara Yuncker, sp. nov. 



Herba carnosa stolonifera diffusa rupicola, ramis dissite hirsuta in sicco 

 valde anguloso-sulcatis flavida desquamata ad nodos constricta. Foliis alternis 

 vel raro oppositis pro more elliptico-suborbicularis apice rotundatis emarginatis 

 basi obtusis palmatim 3-nerviis supra glabris subtus modice hirsutis, pilis erec- 

 tis, petiolo crasso; spicis sat dissite florigeris, drupa aureo-flavida globosa 

 rostrata, stigmate apicali. 



A succulent, wide-spreading, rupicolous herb. Stem 2-3 mm thick, the branches 

 ascending to 10-15 cm from the prostrate basal part, rooting at the lower nodes, 

 drying yellow, scaly-exfoliating, strongly longitudinally grooved, deeply constricted 

 and easily broken at the nodes, sparingly hirsute, the hairs erect, the internodes 

 5-10 mm long above to 3 cm below. Leaves alternate or infrequently opposite, 

 elliptic, subobovate or mostly elliptical-suborbicular, the apex rounded, emargi- 

 nate, the base obtuse, to 1.2-2 cm wide and 1.8-2 cm long, but often smaller, 

 palmately 3-nerved, the midrib conspicuous, the lateral nerves more obscure, 

 glabrous above, moderately hirsute beneath, the hairs erect, the apical notch 

 usually somewhat bristly-hairy, drying coriaceous, wrinkled, revolute, glandular- 

 pitted beneath, the petiole about 2 mm long, stout, constricted at the base, 

 sparingly hirsute glabrescent. Spikes rather loosely flowered, 1—2 mm thick and 

 7-10 cm long, the peduncle rather slender, glabrous, 1-2 cm long, the bracts 

 round-peltate, the drupes golden yellow, globose, beaked, about 1 mm long, with 

 apical stigma. 



TYPE: VENEZUELA: Bolivar: Cerro Guaiquinima, Rio Paragua, occasional 

 on moist rocks and cliffs near waterfalls, "North" Valley, alt. 1600-1700 m, Jan. 

 10-12, 1952, Bassett Maguire 33047 (NY). 



VENEZUELA: Boh'var: woodland floor at stream side, "North" Valley, alt. 1600-1700 

 m, Jan. 10-12, 1952, Bassett Maguire 33072A (NY). Amazonas: Cano Guaviarito, Rio 

 Manapiare, Rio Ventuari, on rocks at summit of Cerro Guanay, alt. 1800 m, Feb. 4, 1951, 

 Bassett Maguire, Kathleen D. Phelps, Charles B. Hitchcock & Gerald Budowski 31748 

 (NY); Serranla Yutaje, Rio Manapiare, Cerro, Coro-Coro, frequent on rocks, Mar. 2, 1953, 

 Bassett Maguire & Celia K. Maguire 35454 (NY); Cerro Yutaje, frequent on Northwest 

 Ridge, Cerro Yutaje, alt. 1400 m, Feb. 11, 1953, Bassett Maguire & Celia K. Maguire 

 35166 (NY). 



P. cladara f. perglabra Yuncker, f. nov. 



A speciei forma typica differt planta omnino glabra. 

 Plants entirely glabrous. 



TYPE: VENEZUELA: Amazonas: Cerro Sipapo (Paraque), on rocks in north 

 branch of Cano Profundo, frequent, alt. 1600 m, Jan. 8, 1949, Bassett Maguire & 

 Louis Politi 28253 (NY). 



VENEZUELA: Amazonas: Serrania Yutaje, Rj'o Manapiare, frequent on northwest 

 ridge of Cano Yutaje, alt. 1500 m, Mar. 1, 1953, Bassett Maguire & Celia K. Maguire 

 35421 (NY). 



