XXVIII. OIIAMINE.E. 211 



culms ascending, distichously leaved, distantly sheathed above, spikes 

 barley-like, shining whitish-yellow, barl)s] spreading at mid-day, bur 

 soon contracted. Plentiful in sandy wooded places between Sansa- 

 manda and Mopopo on the right bank of the Cuanza ; April 1857. 

 No. 7424. Panicle narrowed in the day-time expanded in the evening. 

 Common in sandy woody places near Sansamanda : 1 Mav 1857. 

 No. 2732. 



HiiLLA. — A cespitose grass, culms prostrate to ascending, spikes 

 3fl/on>(Tus-like purplish. Very common on low thicket-grown sandy 

 hills round edges of woods near Monino ; April and Mav 18G0. 

 No. 7488. 



Tribe vi. AVEXE.E. 



40. AVENA L. ; Benth. & Hook. f. Gen. PI. ill. p. 1160. 



1. A. uniflora Pari. PI. Nov. v. Min. Not. p. 84 (1842); Webb 

 & Berth. Hist. Nat. C.inar. iii. p. 401, t. 248; Steud. Syn. PI. 

 Gram. p. 231 (1854); Durand & Schinz, Consp. Fl. Afr. v. p. 843. 



HuiLLA. — Sandy thickets near the banks of the river Monino, but 

 rarely met with ; April 1860. No. 7509. 



41. DANTHONIA DC; Benth. & Hook. f. Gen. PI. iii. p. 1162. 



1. D. Forskalii E. Br. in Denham & Clapp. Trav. &: Disc, in N. 

 & Centr. Afr. App. p. 244 (1826); Trin. Gram. Icon, k Descr. 

 i. t. 49 (1828); Steud. Syn. PI. Gi-am. p. 244 (1854); Durand 

 tt Schinz, Consp. Fl. Afr. v. p. 850. 



D. glauca Nees Fl. Afr. Austv. p. 327 (1841). 

 MosSAMEDES. — Coarse sandy places near the sea, to the south of 

 Mossamedes, but rather rare. Praia da Amelia ; July 1859. No. 2294- 



2. D. mossamedensis Rendle sp. nov. 



Perennial by a stout woody rhizome, culms erect or sub- 

 ascending below, unbranched, sufFruticose ; leaf -sheaths striate, 

 glabrous below, becoming scabridulous above, shorter than the 

 densely, shortly pubescent internodes ; nodes reddish, glabrous ; 

 ligule short, den.sely hairy; blades about equal to or slightly 

 exceeding the sheaths, linear-tapering, becoming convolute, apex 

 setaceous, more or less scabridulous on the low-er, striate and 

 sparsely shortly pilose on the upper face; panicle strict, inter- 

 rupted, branches short, suberect, densely spiculiferous to the 

 base, rhachis, branches, and pedicels shortly pubescent ; spikelets 

 1^ in. long, barren glumes subequal, exceeding the flowers, 

 lanceolate, acute, rigidulous, membranous, 9- and 7-nerved, flowers 6, 

 becoming smaller upwards, rhachis-joints obliquely acute, lowest 

 fertile glume elliptical, concave, 7-nerved, bilobed at the apex, lobes 

 weakly setigerous, bearing a dorsal line of dense white hairs 

 about i below the tip; pale much flattened, nerves stx'ong, 

 minutely ciliolate. ovaiy glabrous. 



Plants 2 to 2.! ft. high ; root-fibres stout ; leaf-sheaths, except 

 the uppermost (5 in.), 1^ to 3 J in. long, blades '^ to 3^ in. long, 

 1 to \\ lines broad at the base, ligule ~ line long. Panicle 6 to 

 9 in. long, 1 in. or less across, lowest branches \\ to 1^ in. long, 



