MOUNT ROKAIMA IN BRITISH GUIANA. 75 



fcrifidse, 1 -nerves, submembranaceae, glabra* ; gimme florentes oblongac, lon^e 

 aristatse, basi longe pilosse, 5-nerves. Palea lineari-oblonga, bifida vol emarginata, 

 2-iicrvis, membranacea, rnarginibus inflexis. 

 Perennial, 1-J— 3 ft. (or more?) high. Stems Laxly leafy to tbe top, glabrous. Lower 

 leaves 9-20 in. long, the upper gradually shorter, 1^-3 lin. broad, erect, slightly rigid, 

 lineal', complicate, very obliquely subacute, glabrous or occasionally very minutely and 

 thinly scaberulous on the back, microscopically papillate on the upperside, sometimes 

 pilose and ciliate with long hairs just above the ligule, which is reduced to a dense ring 

 of hairs. Panicle slightly nodding, 4i-6 in. long, l^-2i in. broad, not very dense, its 

 branches and pedicels scaberulous or villose. Spikelets 8-9 lin. long, 3-5-flowered, the 

 rhachilla readily disarticulating between the flowers, which are hermaphrodite. Empty 

 glumes 2, subequal, 3-3| lin. long, linear, acute and mucronate or shortly bifid at the 

 apex, 1-nerved, membranous, glabrous. Flowering glume (excluding the awn) 3 lin. long, 

 oblong-lanceolate, very concave, villose on the basal part with white hairs 2 lin. long, 

 5-nerved, trifid at the apex, with the middle tooth (or nerve) running out into a straight 

 scabrid awn about 4 lin. long. Pale 2^- lin. long, oblong-linear, with intiexed margins, 

 bifid or emarginate at the apex, 2-nerved, scabrous on tbe nerves, otherwise glabrous. 

 Lodicules J lin. long, broad and oblique, subentire or crenately 2-lobulate, glabrous. 

 Stamens 3. Ovary about 1 lin. long, slightly fusiform, or subterete, glabrous. Styles 2, 

 plumose for f of their length, yellow or brown. 



Summit of Mount Roraima, 8(500 ft., McConnell 8f Quelch, 073. 

 Allied to A. pilosa, D'Urv. 



Arlndinaria deflexa., N. E. Brown, sp. n. Culmi superne ramosi, ramis erectis 



teretibus glabris Miosis. Folia deflexa, lanceolata, acuminata, glabra, marginibus 



scaberulis ; ligula brevis, subtruncata ; vagina ad apicem longe setosa. Panicula 



terminalis, erecta, angusta, laxa, glabra. Spiculse angustse, paucifiorae. Glumae 



inferiores 3 vacua?, glunia extima minimus, 2 sequentes fiorentibus subsimiles sed 



minores ; glumse florentes ovato-lanceolatae, obtusae, concavae, 7-nerves, glabrae, 



minutissime ciliatae. Palea angusta, brevissime bifida, bicarinata, carinis ciliatis. 



Stems branching in the upper part. Branches very erect, close to and parallel with 



the main stem, terete, glabrous, leafy, nearly concealed by the leaf-sheaths. Leaves 



deflexed, 5-5.V in. long, 9-11 lin. broad, lanceolate, tapering to a very acute point, 



glabrous on both sides, scabrid on the margins, probably slightly glaucous beneath; 



primary veins not very distinct from the rest; sheaths closely embracing the stem, 



glabrous, striate, with a fringe of long bristles at the apex ; ligule short, subtruncate, 



glabrous. Panicle 5-11 in. long, 1-2 in. broad, lax, with slender erect glabrous branches. 



Spikelets about 3-flovvered, 5-6 lin. long, narrow, with the 3 lower glumes empty, the 



lowest of which is about 1 lin. long, the second and third 2-2^ lin. long, oblong, obtuse. 



concave, glabrous, not ciliate, obscurely 5-7-nerved. Flowering glume 3|-3| lin. long, 



ovate-lanceolate, obtuse, concave, glabrous, very minutely ciliate, 7-nerved. Pale :$ lin. 



long, linear-oblong, with inflexed sides, slightly bifid at the obtuse apex, with 2 keel-like 



ciliate nerves. Anthers 1^ lin. long, linear. 



Summit of Mount Roraima, 8600 ft., McConnell 8f Quelch, 678. 



h 2 



