68 REPORT ON TWO BOTANICAL COLLECTIONS FROM 
TILLANDSIA RHODOCINCTA, Baker, in Journ. Bot. xxvi. (1888), p. 143, & Handb. Brom, 
p. 178; Mez, in DC. Monog. Phan. ix. p. 791. Tillandsia sp., Baker, in Trans. Linn. 
Soc. Ser. II. Bot. ii. (1887), p. 285. 
Summit of Mount Roraima, McConnell & Quelch, 671.— Endemic. 
IRIDACE.E. 
SISYRHINCHIUM ALATUM, Hooker, Icones Plant. t. 219, var. 
Kotinga Valley, MeConnell & Quelch, 139. 
LILIACE.E. 
NIETNERIA CORYMBOSA, Klotzsch, in R. Schomb. Reisen in Brit.-Guiana, iii. p. 1066 ; im 
Thurn & Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), pp. 269, 285. 
Upper slopes of Mount Roraima, McConnell & Queich, 12, 36,528. Summit of Mount 
Roraima, J/c Connell & Quelch, 83, 656.— Apparently endemic to the region. 
'l'OFIELDIA SCHOMBURGKIANA, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 285, 
t. 49. £. A. 
Isidrogalvis guianensis, Klotzsch, in R. Schomb, Reisen in Brit.-Guiana, iii, p. 1065, name only. 
Upper slopes and summit of Mount Roraima, MeConnell A: Queich, 93, 326, 651; 
Schomburgk.—Endemic. 
XYRIDACE.E. 
Xyris SEUBERTIH, Nilss. in K. Svensk Akad. Handl. xxiv. (1892), No. xtv. p. 51, t. 4. 
E 
. Upper slopes of Mount Roraima, McConnell & Quelch, 41.—The locality in which 
Schomburgk collected this plant is unknown to me, and the leaves of his specimens are 
much smaller than those of the specimens collected by McConnell & Quelch. 
Xyris CONCINNA, N. E. Brown, sp. n. Planta 3-6 poll. alta, perennis, glabra. Caudex | 
i-3 poll. longus. Folia disticha, 1-22 poll. longa, anguste linearia, acuta. Pedun- | 
culus subteres, uno margine prominente, basi vagina apice breviter foliata 
instructus. Spica ovoidea. Bracteæ oblongæ vel ellipticæ, obtusæ, castaneæ, late 
albo-marginatæ, laceratæ, glabræ. Sepala lateralia lineari-lanceolata, acuta, carinata, 
glabra, carina integra vel ad medium minutissime scabrida. Petala elliptica, obtusa, 
integra, lutea. Staminodia bibrachiata, brachiis penicillatis luteis. 
Perennial. Caudex 1-1 in. (or more?) long, 4 lin. thick, naked below the leaves, 
emitting fibrous roots. Leaves distichous, 1-22 in. long, 3-2 lin. broad, linear, acute, 
abruptly dilated into a short, broad, bright brown, clasping base, not twisted, glabrous. j 
dicis dedi p dM E LL Lu i 
Peduneles 1-6 to a stem, 24-5} in. long, 1-3 lin. thick, subterete, with a raised line E 
along one side, glabrous ; their basal sheaths 32-13 in. long, produced at the apex into a 1 
short eompressed or leafy point, keeled, glabrous, often minutely ciliate along the keel or 1 
at its apex. Spikes 23-3% lin. long, ovoid, obtuse. Bracts 1}-24 lin. long, 1-14 liv. ] 
