194 XXVIII. GRAMixE.K. \Leiicophri/s 



glume large, lanceolate, papery, subglabrous, longer than, rarely 

 subequal to, the second ; gl. II. separated from gl. I. by a short 

 thick joint, lanceolate-acuminate, membranous,beainng a line of 

 stiff erect whitish hairs below the middle, becoming papery above 

 the line of hairs ; gl. III. similar to liut a little .shorter and 

 broader than the second, sheltering a subequal flattened pale with 

 a c^ flower (3-androus) ; gl. IV. about half as long as the barren 

 glumes, oval, convex, coriaceous, polished, with a subequal pale 

 and a $ flower. Panicle narrow, spikelets densely arranged on 

 the short sometimes subdistant lateral branches of a stiff rhachis ; 

 pedicel jointed a shoi-t distance below the lowest glu me. Apparently 

 a psammophilous plant, with rigid glaucous spreading nodose 

 branches and short subfleshy involute pointed leaves. 



Distinguished from I'anicum l)y its large papery outer glume, 

 often exceeding the second. Resembles IVichokena in the presence 

 of the callus below^ the second glume and the transverse demarcatior. 

 of the innei- barren glumes by a line of hairs, but is distinguished 

 by the size of the outer glume which is the most important in the 

 spikelet, and not as in Tricholcena, a mere rudiment. The difference 

 between the genera resembles that between Digitaria and 

 Panicuin, but is in a much greater degi-ee. 



Hab. — Subtropical south-west Africa (Namaqualand and 

 Mossamedes). iSpecies one. 



1. L. mesocoma. 



Panicum 7nesocomum Nees Fl. Austr. Afr. p. 34 (1841) : 

 8teud. Syn. PI. Gram. p. 88 (1854) : Durand & Schinz, Consp.'. 

 Fl. Afr. V. p. 754. 



Mossamedes. — A perennial grass, stem branched from the base, 

 branches widely spreading at an obtuse angle, very rigid and brittle, 

 glaucous : leaves resembling those of a Dianthi'^, subfleshy glaucous, 

 falcately recurved. In gravelly soil bv the banks of the river Bero : 

 end of June 1859. No. 2295. 



30. TRICHOLiENA Schrad. ex Eoem. k Schult. Mant. ii. p. 

 163 (1824). 



I'anicum L., Benth. A: Hook. f. Gen. PI. iii. p. 1103, pro parte. 



1. T. rosea Nees Fl. Afr. Austr. p. 17 (1841); Durand ct 

 Schinz, Consp. Fl. Afr. v. p. 770. 



Panicum roseum Steud. Syn. PI. Gram. i. p. 92 (1854). 



HuiLLA. — A csespitose grass 2 ft. high, with erect stems, very 

 narrowly linear leaves, and shining-silvery spikelets. In damp 

 pastures close to streams near Humpata; end of Nov. 1859. No. 7517- 

 In poorer meadows near Lopollo ; Jan. 1860. No. 2649. In rather 

 dry thickets between Catumba and Nene : April ISilO. No. 2663. In 

 wooded places near Lake Ivantala ; Feb. ISGO. No. 2666. 



2. T. grandiflora llochst. in Flora xxiv. Intell. i. p. 19 (1841) 

 (nomen); A. Pvich. Tent. Fl. Abyss, ii. p. 445 (1851); Durand k 

 Schinz, ^.c, p. 769. 



T. fragilis A. Br. in Flora xxiv. p. 275 ; Durand & Schinz,, 



