204 XXVIII. GRAMiNE.E. [AHstida 



setaceous, becoming convolute, scabridulous, sparsely hairy 

 beneath, ligule obsolete; panicle lax, strict, meagre; pedicels 

 not exceeding the blue-purple spikelet ; gl. I. linear-lanceolate, 

 acuminate or tapering to a strongly cuspidate apex, with one 

 strong median nerve, back hispidulous ; gl. II. slightly exceeding 

 gl. I., linear-tapering to linear-lanceolate, strongly cuspidate, 

 with a strong median nerve, glabrous ; gl. III. oblong, tapering 

 above without articulation into the awn-stipe, 3-nerved, scabridu- 

 lous, awn stipe several times twisted, panicles generally 3 sub- 

 equal or the median slightly longer, sometimes with one or two 

 small additional branches. 



Plants about 15 in. high ; leaves 4 in. long or less, ^ line or 

 less in width. Panicle 2i to 4 in. long, branches few, generally 

 appressed, not exceeding li to If in. Gl. I. 3^ to 4 lines long; 

 gl. II. 3| to 4^ lines ; gl. III. about 2-^ lines, including the 

 shortly bearded callus (^ line), awn-stipe 2^ to 3^ lines, branches 

 6 to 8 lines. 



A distinct species of this section characterised by its sti'ongly 

 cuspidate subequal barren glumes, and strict meagre panicle. 



HuiLLA.^A barley -like grass, culms suberect, widely cfespitose. 

 Stony precipices at the cataract near Lopollo ; 1 Xov. 1859. On the 

 drier rocks at the cataract of Lopollo ; April 18G0. No. 2691. 



4. A. rhiniochloa Hochst. in Flora xxxviii. p. 200 (1855); 

 Durand & Schinz, I.e., p. 808 (rhiyiochloa). 



LoAXDA. — Plentiful in dry places grown with Evj)/t()rbi<( near 

 ]\Iaianga do Povo, but found only in one locality ; 17 May 1854. 

 No. 7360. 



Sect. 2. — Arthratherum. 



5. A. hordeacea Kunth Rev. Gram. p. 517, 1. 173 (1835) ; Steud. 

 Syn. PI. Gram. p. 142 (1854) ; Durand & Schinz, I.e., p. 803. 



A. Steudeliana Trin. & Rupr. in Mem. Acad. Sci. Petersb. 

 ser. 6. vii. p. 155 (1843) ; Steud., I.e. ; Durand & Schinz, I.e., p. 809. 



LoANDA. — Annual, csespitose, with a Bromoid habit, violet-purple 

 glumes and yellowish awns. Sandy places, Alto das Crazes : Mav 

 1858. No. 7301. Nos. 7324, 7336, 7474 (no notes). 



6. A. vestita Thunb. Prodr. PI. Capens. p. 19 (1794); Steud., 

 I.e., p. 142 ; Durand & Schinz, I.e., p. 810. 



Arthratliernm vestitvm Nees Fl. Afr. Austr. p. 174 (1841). 



Hiii.LA. — Plentiful in grassy thickets among Acanthacese between 

 Quilengues and Lake Ivantula ; Feb. 18C0. No. 7516. 



The following specimen may belong to this species, but the 

 material is too young for determination. 



HuiLLA. — Wooded meadows on the river Monino ; Feb. 18611. 

 No. 2651. 



Sect. 3. — Stipagrostis. 



7. A. subacaulis Steud. Nomencl. Bot. ed. ii. i. p. 132 (1840), 

 Syn. PI. Gram. p. 144; Durand & Schinz, I.e., p. 809. 



Arthratherum subacaule Nees, I.e., p. 180. 



