176 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 18, No. 9 
panicle branches ascending instead of spreading as at maturity. 
This species is represented by Botanic Garden Herb. 3318, Trinidad, 
and Riedel 183, Bahia, Brazil. 
64, OPLISMENUS BRASILIENSIS. “In montanis prope Tejucco, 
necnon in Monte Corcovado.” The specimen consists of four simple 
plants of Oplismenus hirtellus (L.) Beauv. The sheaths are pubescent 
as in Regnell III 1373, from Brazil, and Pittier 5976, from Venezuela, 
as well as in numerous tropical North American specimens. The 
pubescence is rather soft, not stiff and bristly as in Wright 751, Pringle 
76, and Shafer 3011, from Cuba; Harris 11465, 11607, from Jamaica; 
and Hitchcock 10222 and 10252, Tobago. } 
66. PANICUM UNCINATUM. ‘‘In sylvaticis prope Catumby, non 
procul ab Urbe Rio de Janeiro.”’ No specimen of this could be found 
in Pisa, but in the herbarium of the British Museum is a specimen so 
named in Raddi’s script. The upper spikelets are mature, showing 
the hooked, spine-like hairs. The plant is the same as the type of 
Echinolaena polystachya H. B. K., which was examined in the Berlin 
Herbarium. It is represented by the specimens cited under this name 
in Hitchcock’s Mexican Grasses”* and those cited under Pseudechino- 
laena polystachya (H. B. K.) Stapf in his Grasses of British Guiana.?7 
67. PANICUM PULCHELLUM. “In sylvaticis prope Catumby; non 
procul ab Urbe Rio de Janeiro.”” The specimen consists of a creeping 
plant with four flowering culms and another flowering culm without 
base. It belongs to the species described under this name in Hitchcock 
and Chase’s North American Species of Panicum.?8 
68. PANICUM OLYRAEFOLIUM. pl.1.f.6. ‘‘In sepibus prope fossas 
udas in viciniis Rio-Janeiro”’ (the locality given with that of P. donaci- 
foliuwm). The specimen, consisting of two branching plants rooting 
at the nodes, and two additional flowering culms, belongs to Panicum 
frondescens Meyer, as described by Hitchcock and Chase.?® 
69. PANICUM CONDENSATUM. ‘‘In sepibus prope fossas udas in 
viciniis Rio-Janeiro.”” The specimen consists of a flowering culm, 
lacking the base, with sterile branches. Among the unidentified 
grasses in the Florence Herbarium were three sheets of this collection, 
the largest with a stout culm and blades reaching to 20 cm. long and 
2.6 em. wide. Raddi cites “Bert. Op. Se. di Bol. An 1819. T. III 
p. 408.” Bertoloni’s description agrees well with Raddi’s specimens. 
26 Contr. U. S. Nat. Herb. 17: 223. 1913. 
27 Contr. U. S. Nat. Herb. 22: 469. 1922. 
28 Contr. U. S. Nat. Herb. 15: 123. 1910. 
29 Contr. U. S. Nat. Herb. 16: 121. 1910. 
