CL VII. GRAMINE2E (Stapf). 
443 
white-ciliate wings ; pedicels 2-nate, hispidulous or loosely pubescent 
to (upwards) densely ciliate, unequal, the longer up to f, rarely 1, 
lin. long, more or less curved, slightly angular. Spikelets tightly 
appressed to the rhachis, subimbricate, oblong-lanceolate to lanceolate 
in outline, lj-lf- lin. long, silky. Lower glume quite suppressed or 
reduced to a microscopic hyaline scale ; upper linear-lanceolate to 
lanceolate, acute, f-1 lin. long, thin, finely 3-nerved (the middle 
nerve sometimes obscure), densely hairy all over except on the 
hyaline margins, hairs appressed, exceeding the tip. Lower floret : 
valve oblong-lanceolate, corresponding in shape and size to the 
spikelet, acute to acuminate, thin with glabrous hyaline margins, 
5-nerved, middle nerve much finer than the lateral or almost obscure, 
these densely and appressedly hairy, hairs straight, sharply pointed, 
shortly exceeding the tip of the valve ; valvule a minute ovate 
hyaline scale up to J lin. long ; lodicules minute. Upper floret 
lanceolate-acute to acutely acuminate, 1 lin. long, thinly coriaceous 
and brown. Anthers J lin. long. — D. monodactyla, Rendle in Cat. 
Afr. PI. Welw. ii. 162. Panicum monodactylum , Eyles in Trans. 
Roy. Soc. S. Afr. v. 300. ,i 
Lower Guinea. Angola : in wooded pastures near Quilanga, Welwitsch, 
2823 ! common in wooded meadows between Candumba and Calundo, Wel- 
witsch, 7431 ! country of the Ganguellas and Ambuellas, Gossweiler, 2425 ! 
in sandy meadows west of Munongue, Gossweiler, 2457 ! Huilla ; in elevated 
meadows at Oahoia, Sobato Humpata, Welwitsch, 2662 ! 
Mozambique Distr. Rhodesia : Salisbury, Mundy ! Somnabula, Nobbs, 
663 ! 
Also in the Transvaal (Apies River, Nelson, 102 ! and Botsabelo, Schlechter, 
3781 !). 
This variety differs from the type form only in the structure of the blades 
of the basal leaves, which in the latter are finely setaceous, lin. in diam., 
glabrous or very finely and sparingly hairy and devoid of motor cells ; hence 
they do not unroll. They have only 2 lateral ribs on each side of the midrib 
and the outer cell-walls of the dorsal epidermis are very conspicuously thickened. 
The type form is confined to the area of the “Flora Capensis,” from Pretoria 
southwards ; but specimens collected by Schlechter at Grahamstown (no. 2715) 
have, besides the leaves characteristic of the type-form, others which possess 
well-developled motor ceils and unroll more or less. Their dorsal epidermis, 
however, is as in the type. Whether this indicates merely instability of cha- 
racters or seasonal dimorphism will have to be decided in the field or by experi- 
ment. The Angolan specimens are generally more robust and have firmer leaf- 
blades than the Rhodesian and Transvaal specimens, which as to stature often 
approach the type-form. Welwitsch,' 2823 and 7431, and to a lesser degree, 
2847, which is unaccompanied by notes, are distinguished by the laxness of 
growth, the tufts consisting of loose bunches of culms springing from slender 
erect or ascending bases. 
12. D. compressa, Stapf. Perennial, compactly csespitose with 
a dense coat of fibres at the base ; innovations intravaginal. Culms 
erect, slender, up to over 1J ft. high, glabrous, 2-noded, compressed, 
particularly the uppermost, very slender and long-exserted inter- 
node, simple. Leaf-sheaths somewhat loose, striate, softly and 
