138 XXVIII. GRAMINES., [Elionurus 
at which the narrow edges are inflexed; gl. IIT. hyaline, elliptico- 
lanceolate with 2 marginal nerves and sparsely ciliolate edges, 2 
lines long; fertile glume similar but 3-nerved and only 14 line 
long, enclosing an epaleate } flower. Pedicel of primary spikelet 
12 line long, glabrescent, spikelet 2 lines long, obliquely lanceolate, 
similar to the sessile but the glumes are about ith smaller, and 
never seem to contain a flower. 
A striking plant with the habit of #. tripsacoides Humb. but 
recalling in its almost glabrous spike Z#. tristis Hackel from 
Madagascar, which however is a much smaller plant. 
Pungo ANDONGO.—Candumba ; March 1857. No. 2711. 
5. ARTHRAXON Beauv. ; Benth. & Hook.f.Gen. Pl. iii. p.1128. 
1. A. ciliaris Beauv. Agrost. p. 111 (1812); Hack. Mon. 
Androp. p. 354; Durand & Schinz, Consp. Fl. Afr. v. p. 703. 
Leaves 1 to 1+ in. long, from a base of about 3 lines broad, 
sparsely tuberculate at the base, surface otherwise almost glabrous. 
Spikes 14 to 13 in. long, sessile spikelet 3 length of the glabrous 
rhachis-joint, lanceolate, 2 lines long, veins hirsutulous, awn a 
little shorter ; second spikelet represented by a short punctum or 
obsolete. 
Approaches nearest to Hackel’s var. a genwinws (China and 
Japan), but the subspecies and varieties suggested by Hackel 
are not very satisfactory; the presence or absence of hairs on the 
rhachis seems pushed too far as a subspecific character. 
Gotunco AtTo.—Perennial, prostrate, culms 3 to 6 ft., rooting at 
the nodes, new foliaceous and flowering branches ascending-erect. 
Flowers moncecious, the male occupying the lower, the female the 
terminal spikelets. Habit of Cynodon. Growing in thick masses, 
forming marshy meadows on the banks of the river Casaballa. In 
leaf Sept. 1855 ; fl. and fr. May 1856. No. 7214. 
6. RHYTACHNE Desv.; Benth. & Hook. f. Gen. Pl. iii. p. 1096. 
1. R. benguellensis Rendle sp. nov. 
Cespitose ; culms erect, wiry, unbranched, ending in the 
solitary spikelike inflorescence; leaves rigid, convolute, flagelli- 
form, with a narrow cylindrical sheath and tapering to a setiform 
apex, glabrous except for a tuft of short white hairs at the 
mouth of the sheath; ligule membranous, very short and truncate; 
spike slender, glabrous ; rhachis-joint slightly exceeding the sessile 
spikelet, clavate, hollow, plane of separation straight, small; 
pedicelled flower represented by the linear pedicel bearing a 
minute glumelike appendage, the whole equal in length to the 
rhachis-joint ; sessile spikelet bluntly ovate, callus merely a line 
separated from the outer glume by a broader furrow: outer 
glume generally patent, hard with shallowly convex back and 
very narrow incurved edges, inconspicuously 7-nerved, deeply 
transversely muricate, markings decreasing upwards and absent 
below the generally minutely biapiculate apex; gl. II. equal 
to gl. I, papery, transparent, 3-nerved, scaphoid with shortly 
