216 XXVIII. GRAMINEA. [ Trichopteryx 
Puxco Anponco.—4 to 5 ft. high, with an erect, slender, slightly 
branched culm. Remarkably social. Very plentiful on the rather 
damp banks of the river Cuanza near Condo, Calemba, etc. ; 12 March 
1857. No. 7412. Sandy woods of Leguminose ; Feb. 1857. No. 2782. 
5. T. viridis Rendle sp. nov. 
Perennial, cespitose, culms strong, erect, base subascending, 
enveloped by the equitant pubescent sheaths of the withering 
basal leaves; cauline internodes 3, the lowest minutely pubescent, 
the upper glabrous, except the uppermost longer than the sheaths ; 
nodes densely hairy; ligule a short dense row of whitish hairs ; 
blades linear-lanceolate from a tapering base, acute, margined, 
midrib conspicuous, lower face pubescent ; panicle springing from 
the uppermost leaf-sheath which reaches to its base, linear or 
narrowly lanceolate, dense, rhachis and branches pubescent, 
branches alternate, erect or suberect, secondary branches suberect, 
subsecund ; spikelets terminal, or sessile and shortly stalked in 
pairs, lanceolate, membranous, yellowish-green tinged with purple, 
5 to 6 lines long; gl. I. ovate, blunt, conspicuously 3-nerved, 
nearly half as long as gl. IIT. ; gl. II. elliptical narrowing above 
to a long linear blunt tip, conspicuously 3-nerved, exceeding gl. III. 
which is elliptical narrowing above to a shortly acuminate blunt 
hyaline apex, 5-nerved, pale flat, hyaline, enclosing a triandrous 
do flower; gl. IV. on a densely hairy callus, elliptical-ovate, 
9-nerved, apex with 2 acute lobes, between which springs an awn 
twice the length of the glume, the rounded back of the glume 
bearing just below the middle line eight intervenal tufts of 
whitish hairs; pale ovate-lanceolate, the 2 veins bearing a circi- 
nately incurving keel below the middle line, flower $ , triandrous, 
ovary glabrous. 
Planis 3 ft. high, with a strong sympodial rhizome; basal 
sheaths 2 to 43 in. long, the cauline 5 to 8 in., loosely enveloping 
the stout, terete internode ; blades of basal leaves to 8 in. long 
by over 4 lines broad, on the culms shorter. Panicle 8 to 10 in., 
and probably longer, lower branches reaching 5 in. becoming 
shorter upwards; gl. I. about 24 lines long, sparsely pubescent 
near the tip; gl. II. 5 to 6 lines, glabrous; gl. ITI. 43 lines, 
the outermost nerves falling short of the rest, the hyaline 
apex nerveless, glabrous ; pale delicate, 4 lines; gl. ITV. about 
33 lines, hairs of callus reaching to the origin of the dorsal 
tufts, which themselves fall short of the tips of the lateral lobes, 
the 3 central nerves passing into the base of the awn, the 3 lateral 
into the lobe; awn 6 to 7 lines long, the pale subula slightly 
exceeding the brown twisted column ; pale 3 lines long, anthers 
brownish, 23 lines, lodicules cuneate, between } and 4 line. 
A very distinct species characterised by its greenish membranous 
spikelets, triandrous flowers, tufted-hairy fertile glume and locally 
keeled pale. 
Huiiia.—A cespitose grass with habit of Avena, very much liked by 
cattle. In rocky, thicket-grown pastures round the great Hippopotamus 
lake (Ivantala) ; Feb. 1860. No. 2633. 
