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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 2 



sheaths rather loose, 4-5 cm. long, many-striate, slightly twisted, glabrous except 

 for the mouth, obliquely split at the apex, the blade firm, erect, 5-6 mm. long, 

 long-ciliate on the lower half of the margins; peduncles rather slender, 1 or 2 per 

 stem and branch, 2-7 per plant, brownish, 19-23 cm. long, 3-costate, slightly 

 twisted, densely loose-pilose with whitish ascending hairs; heads hemispheric, 

 dark-gray, 5-« Q mm. in diameter; involucral bractlets elliptic-ovate, dark brown or 

 blackish, about 2 mm. long and 1 mm. wide, obtuse or subacute at the apex, 

 glabrous or minutely ciliolate at the apex; receptacle long-pilose; receptacular 

 bractlets obovate-spatulate, dark-brown, about 2.5 mm. long and 0.8 mm. wide, 

 obtuse and densely white-barbellate at the apex; staminate florets: sepals 3> sep- 

 arate, oblanceolate, brownish, about 2 mm. long and 0.5 mm. wide, obtuse and 

 densely white-barbellate at the apex, otherwise glabrous; petals 3, connate into a 

 hyaline infundibular tube about L5 mm. long, glabrous; stamens 3, exserted, 

 white; anthers white; rudimentary pistil brown, about 0.7 mm. long, 3-parted, in- 

 cluded; pistillate florets: sepals 3, elliptic, about 2.5 mm. long and 0.5 mm. wide, 

 brownish, obtuse, densely white-barbellate at the apex, lightly pilosulous on the 

 back; petals 3, hyaline, linear, about 2*5 mm. long and 0.2 mm. wide, subacute, 

 densely long-villous, the basal white hairs longer than the petal, the upper ones 

 gradually shorter so that all reach about the same level; pistil brown, compara- 

 tively stout, about 2.7 mm. long, glabrous; style about 0.5 mm. long; stigmas 3, 

 about 1 mm. long; style-appendages 3, about 1.5 mm. long; ovary small, about 0.5 

 mm. long and wide. 



TYPE: in wet sphagnum hummocks, Camp Savanna, 4500 feet alt., Cerro Si- 

 papo (Paraque), Amazonas, Venezuela, December 11, 1948, B. Waguire & L. Politi 

 27588; New York Botanical Garden. 



Paepalanthus lamarckii Kunth. 



Heads grayish-white, occasional on moss-covered boulders r rapids above Playa 

 Alta, Rio Cunucunuma, Rio Orinoco, >\aguire, Cowan, & Wurdack 29499. This 

 species has the widest and most amazing distribution of any member of the fam- 

 ily, having been collected in British Honduras, Panama (Code), Cuba (Pinar del 

 Rio), Hispaniola, Isla de Pinos, Trinidad, Venezuela (Amazonas, Bolivar, Falcon, 

 and Monagas), British Guiana, Surinam, French Guiana, Brazil (Amazonas, Ceara, 

 Goyaz, Maranhao, Para, Pernambuco, and Piauhy), and Marajo Island; also in 

 French Guinea, Sierra Leone, French Fquatorial Africa (Gabun), Tanganyika Ter- 

 ritory, and xMadagascar! 



Paepalanthus maguirei Moldenke. 



With white flowers, common among rocks, Culebra Rapids I, Rio Cunucunuma, 

 Rio Orinoco, K Aaguire, Cowan, & Wurdack 30364. The species is also known from 

 Tafelberg, Surinam ( y Aaguire 24241, 24832). 



Paepalanthus perplexans var. wurdacki Moldenke, var. nov. 



Haec varietas a forma typica speciei recedit foliis 1.5-2.5 cm. longis, 2-2.5 

 mm. latis, capitulis subglobosis 4-5 mm. diametro. 



TYPE: on cumbre, frequent, 2000 m. alt., Serrania Paru, Rio Paru, Cano Asisa 

 Rio Ventuari, Amazonas, Venezuela, February 2, 1951, R. S. Qowan & J. J. Wur- 

 dack 31141; New York Botanical Garden. The typical form of the species is 

 known only from ^tari-tepui, Bolivar. 



Paepalanthus tatei Moldenke. 



Frequent in bogs about pool, Camp Savanna, 4500 feet alt., Cerro Sipapo 

 (Paraque), Waguire & Politi 27702; frequent in moist sandy banks among rocks, 

 Danta Falls, Rio Cuao, Rio Orinoco, Maguire & Politi 27343; among rocks in open 



