€rossotrojns\ xxvTii. gramine.e. 227 



by its regular compound spicate inflorescence, and smaller fewer- 

 flowered spikelets, etc. 



LoANDA.— Quinta de Luiz Gomes ; May 1854. No. 7460 (in part). 

 No. 7482 (no notes). 



M(>ssami;di;s.— 1859. Xo. 2302/'. A fragment of a stunted plant. 



58. DIPLACHNE Beauv. ; Benth. & Hook. f. Gen. PI. iii. 

 p. 1176. 



1. D. paucinervis Stapf ined. 



Dactylis pauchiervis Nees Fl. Afr. Austr. p. 429 (1841); Steud. 

 Syn. PI. Gram. p. 297 (1854) ; Durand & Schinz, Consp. Fl. Afr. 

 V. p. 904. 



MossA.MEDKS. — Perennial, stoloniferous, with ascending much 

 branched purplish culms, rigidulous glaucous subviscid leaves, con- 

 tracted spikes and the habit of Poa or Danthonia. Very plentiful and 

 excluding almost every other plant at the subsaline ponds between 

 Porto de Pinda and the mouth of the river Croque or Caroca ; 31 Aug. 

 1859. No. 2613. 



59. TRIRAPHIS R. Br. ; Benth. & Hook. f. Gen. PI. iii. p. 1177. 



1. T. Pumilio R. Br. in App. Denh. & Clapp. Trav. Afr. p. 245 

 <1826) ; Steud. Syn. PI. Gram. p. 199 (1854). 



T. nana Hack, in Engl. Bot. Jahrb. xi. p. 403 (1890) ; Durand 

 & Schinz, Consp. Fl. Afr. v. p. 871. Diplachne nana Nees Fl. Afr. 

 Austr. p. 259 (1841). Trisetum nanimi Steud., I.e., p. 227. 



MosSAMEDES. — A somewhat csespitose grass, fixed in rather damp 

 sand by a few hair-like root-fibres. In sandy places on the river 

 Bero (or Rio das Mortes) nearMata dos Carpinteiros ; 1859. No. 2302. 



2. T. Welwitschii Rendle sp. nov. 



A small annual ; culms generally unbranched, csespitose, with 

 3 to 4 internodes, exposed portion below the panicle sparsely 

 pilo.se ; leaf -sheaths striate, tuberculate-pilose, completely covering 

 or slightly shorter than the internodes ; ligule repi-esented by a 

 thin row of short hairs, sometimes obsolete ; blade flat, linear, 

 tapering to a subaristate apex, scabridulous and glabrous or 

 sparsely tuberculate-pilose dorsally at the base ; panicle somewhat 

 lax, lateral branches short, spreading, ascending or suberect, 

 solitary or fastigiate, spikelets terminal on the branchlets or 

 shortly stalked, many-flowered, a deep wine-red, becoming brown ; 

 barren glumes slightly unequal or subequal, membranous, 1-nerved, 

 glabrous, the lower often shorter, ovate, tapering to a shortly 

 aristate apex, the upper narrowly oblong, the apex more or less 

 tridentate with the median tooth shortly awned ; flowering glumes 

 slightly shorter than gl. II., with short slender shortly hairy callus, 

 lanceolate to oval-lanceolate, 3-nerved, the median awn generally 

 slightly exceeding the glume springing from between two short 

 hyaline lobes, lateral awns about J shorter, hyaline margins 

 sparsely villous from above the base upwards; pale slightly 

 shorter, narrow linear-oblong, glabrous, compressed. 



Plants 6 to 1 1 in. high ; the bases of the culms with their loo.se 



