74 REPORT OX TAVO BOTANICAL COLLECTIONS FROM 



subglauci, bivaginati, vagina inferiore t'oliosa. Panicula 2-3 poll, longa, oblonga, 



multiflora. Spiculae ellipsoideap, 1-2-florae. Glumae 3 inferiores vacuae, glabrae, 



brunneae vel atro-fuscae ; gluma infima parva ; secunda et tertia subeequales elliptica?, 



obtusae, profunde concavae 6-7-nerves. Gluma florens elliptica, obtusa, profunde 



concava, laevis, 5-nervis, glabra, albida. Palea elliptica, obtusa, concava, 2-nervis, 



glabra, albida. 



Leaves, excluding the sheaths, 0-9 in. long, 2^-3 lin. broad, linear, tapering to a very 



acute subpimgent point, with involute margins, rigid, erect, greyish-glaucous, striate, 



more or less densely pilose on the upper side at the base, and densely villose-tomentose 



at the very base of the sheaths ; ligule none. Culms 10-13 in. long, straight, striate, 



glabrous, more or less glaucous at the nodes, bearing two sheaths, the lower of which 



bears a short leaf. Panicle 2-3 in. long, f— ] in. diam., oblong-lanceolate, moderately 



compact, with semiverticillate, erect, glabrous branchlets and pedicels. Spikelets lj-H 



lin. long, ellipsoidal, 1-2-flowered. Empty glumes 3, glabrous, brown or blackish; the 



lowest, f-1 lin. long, 3 lin. broad, oblong or elliptic-oblong, obtuse, 2-nerved ; the 2 inner 



lj lin. long, i lin. broad, elliptic, obtuse, deeply boat-shaped, 0-7-nerved. Flowering 



glume 1 lin. long, elliptic, obtuse, deeply concave, 5-nerved, glabrous, smooth, whitish. 



Pale similar to the flowering glume, but smaller and flatter, 2-nerved, whitish. Anthers 



f lin. long, very dark purplish brown. Stigmas 2, densely plumose, brown or fuscous. 



Summit of Mount Roraima, 8000 ft., McConnell 8f Quelch, 675. 



Allied to Panicum loreum, Trim, but the leaves and panicle are shorter than they are 

 in that species, the spikelets rather larger, and the Leaves quite destitute of a ligule, the 

 absence of which is its most remarkable character, since there are few grasses in which 

 all trace of a ligule is absolutely wanting. 



Panicum chnoodes, Trim Gram. Panic, p. 211. 



Roraima Range, 3500 ft., McCovmell §/• Quelch, 709. — Also in Brazil. 



Echinol^na hirta, Desv. Journ. Bot. i. (1813), p. 75. 



E. scabra, H. B. & K. Nov. Gen. & Sp. i. p. 1LS, t. .'3S ; Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. 

 (1887), p. 288. 



Upper slopes of Mount Roraima, McConnell fy Quelch, 71. — Throughout Guiana and 

 Brazil. The only other species of this genus is a native of Madagascar. 



Olyra micrantha, H. B. & K. Nov. Gen. & Sp. i. p. 199. 



Roraima Range, 3500 ft., McConnell 8f Quelch, 7" s . Widely dispersed in Brazil and 

 Guiana. 



Arundo roraimensis, N. E. Brown, sp. n. Plania i-3 ped. alta, culmo ad apicem laxe 

 folioso glabro. Folia linearia, complicata, apice oblique subacuta, subrigida, glabra 

 vel minutissime scaberula, rare supra ligulam laxe pilosa, intra microscopice papu- 

 losa ; ligula ad annulum dense pilosum reducta. Panicula 1-6 poll, longa, ramis 

 pedicellisque scaberulis vel villosis. Spiculae 3-5-florae, rhachilla brevitcr pilosa inter 

 flores articulata. Glumae 2 inferiores vacuae, subaequales, lineares, acutae vel minute 



