MOUNT RORAIMA IN BRITISH GUIANA. 09 



broad, oblong or elliptic, obtuse, chestnut-brown, with a broad white hyaline border, 

 which soon becomes lacerated, glabrous. Lateral sepals 2f lin. long, h lin. broad, 

 complicate, linear-lanceolate, acute, keeled, yellowish-brown, glabrous, the keel quite 

 entire or very minutely scabrid along the middle. Petals 2 lin. long, 1 lin. broad, elliptic, 

 obtuse, entire, yellow. Staminodes 2-armed, about h lin. long, divided into tufts of 

 yellow hairs. 



Summit of Mount Roraima, 8(500 ft, McConnell 8f Quelch, 19(5. 



Allied to Xyris Seubertii, Nilss., but distinguished by its smaller size, lacerated bracts, 

 and the glabrous or very minutely scabrid keel of the lateral sepals. The broad bright 

 brown bases of the leaves give the base of the plant a somewhat bulbous appearance. 



Xyris witsenioides, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 285, t. 50. f. B. 

 X. caulescens, Klotzsch, in It. Schornb. Reiseu in Brit.-Guiana, iii. p. 1064, name only. 

 Summit of Mount Roraima, McConnell 8f Quelch, 95, 658. — Endemic. 



Abolboda Sceptrum, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 286, & 

 pp. 258, 259, 262, 267, & 268. 



Summit of Mount Roraima, McConnell 8f Quelch, 668. — -Endemic on Roraima and the 

 surrounding region. 



The specimen collected by McConnell & Quelch consists of adult leaves and young 

 plants, and that collected by im Thurn of the upper part of a flowering stem without 

 leaves, so that this interesting plant is as yet very imperfectly represented in European 

 Herbaria. 



RAPATEACE.E. 



Stegolepis guianensis, Klotzsch, ex Koern. in Linnyea, xxxvii. (1871-73), p. 481; im 

 Thurn & Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), pp. 265, 267 & 286. 

 Summit of Mount Roraima, McConnell Sf Quelch, 669. — Endemic. 



ERIOCAULACE^. 



Eriocaulon tenuifolium, Klotzsch, in R. Schomb. Reisen in Brit.-Guiana, iii. p. 1116. 



Savannahs generally, McConnell 8f Quelch, 307. 



PjEpalanthus Roraimjc, Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), p. 286. 

 Summit of Mount Roraima, McConnell 8f Quelch, 102, 315, 660.— Endemic. 



P^palanthtjs flavescens, Koern. in. Mart. Fl. Bras. iii. pt. i. p. 123 ; im Thurn & 

 Oliver, in Trans. Linn. Soc. Ser. II. Bot. ii. (1887), pp. 263, 286. 



P. eriocephalus, Klotzsch in R. Schomb. Reisen in Brit.-Guiana, iii. p. 100 1, name only. 



Upper slopes of Mount Roraima, McConnell 8f Quelch, 9, 10, 327.— Also in Venezuela 

 and Brazil. 



PjEPALANTHUs fraternus, N. E. Brown, sp. n. Acaulis. Eolia dense rosulata, linearia, 

 subacuta, basi late dilatata, supra canaliculata, rigida, supra pilis articulatis appressis 



