PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 295 



237 (45*). Ackosticiium (§ Elaphoglossum) leptopiilebium, n. sp. ; rhizomate repente 



cylindrico lignoso paleis parvis membranaceis laneeolatis brunneis crispatis dense 



vcstito, stipite elongato straminco subnudo, fronde sterili lanceolato membranaeeo 



glabro paleis paucis laneeolatis ad marginem et f'aciem inferiorem praedito, venis 



laxis perspicuis erecto-patentibus simplicibus vel furcatis intra marginem terminan- 



tibus, fronde sterili mnlto minore, stipite longiore. 



Sterile lamina a loot or more long, 18-20 lines broad, cuueate at tbe base, with a 



slender fragile stipe 4-5 inches long. Fertile lamina 4-5 inches long, an ineh broad, 



with a stipe about a foot long. Found upon tbe upper slopes of the mountain. 



93. Acrosticiium muscosum, Sw., var. A. Engelii, Karst. In the neighbourhood of 

 the encampment. 

 213. Acrosticiium squamosum, Sw. Upper slopes of the mountain. 

 41. Acrosticiium (§ Rhipidopteris) peltatum, Sw. In tlie neighbourhood of the 

 encampment. 

 100. Schiz-EA diciiotoma, Sw. In the neighbourhood of the encampment. New to 

 Guiana. 

 85. Schiz.ea elegans, Sw. In the neighbourhood of the encampment. 

 263. Anemia tomentosa, Sw. In the neighbourhood of the encampment. 

 146. LrcopoDiUM alopecuroides, L. In the neighbourhood of the encampment. 

 192. Lycopodium linifolium, L., var. sarmentosum rubescens, Spring. Upper slopes 



of the mountain. 

 230. Lycopodium subulatum, Desv. Base of the cliff. 



226 (159*-). Selaginella (§ Stachygynandrum) vernicosa, n. sp. (Plate LVI. A. figs. 

 1-7); caule basi decumbente superne recto laxe piunato, ramulis paucis brevibus 

 ascendentibus, foliis heteromorphis distichis crassis firmis nitide viridibus, plana3 

 inferioris confertis erecto-patentibus ovatis obtusis margine ubique denticulatis 

 planus superioris duplo brevioribus ascendentibus ovatis obtusis valde imbricatis, 

 spicis tetragonis brevissimis, bracteis conformibus magnis ovatis acutis. 

 This belongs to the Atroviricles group in the neighbourhood of S. MartensU. The 

 main stems are about half a foot long, the leafy branches an eighth of an inch broad, 

 and the leaves of the lower plane a line long. The type (A. figs. 1-7) as described was 

 found at the base of the cliff, and a variety (No. 381) ( B. fig. 8, var. olicjoclada), with much 

 fewer more elongated branches, near the encampment. 



122 (186*). Selaginella (§ Stachygyxanduum) roraimensis, n. sp. (Plate LVI. C. 

 figs. 9-14) ; caule erecto 3-4-pinnato, ramis laxe dispositis ascendentibus ramulis 

 brevibus, foliis heteromorphis distichis membranaceis, plaiue inferioris laxis oblongo- 

 lanceolatis acutis valde ina3quilateralibus basi superiore producto late rotundato, 

 plana) superioris ovatis ascendentibus cuspidatis, spicis tetragonis. bracteis con- 

 formibus ovatis acutis valde imbricatis acute carinatis sporangiis duplo longioribus. 

 Belongs to tbe Radiates group in the neighbourhood of S. radiata and confusa. The 

 main steins are 4 or 5 inches long, the leafy branches £ in. broad, and the leaves of the 

 lower plane a line long. Pound in the neighbourhood of the encampment. 



