Costularia.] cypEracen (Clarke). 275 
by } in., flat, tough, unsymmetrically bent laterally, strongly striate, 
without a midrib ; inflorescence of short axillary 1-3-flowered racemes, 
exserted 1 in. from the leaf-sheaths, flexuose; bracts of the raceme 
1-3 in, long, similar to the leaves; pedicels about + in. long, solitary 
in each bract; spikelet + by 3-1 in., turgid, green, hard, 8~10- 
glumed ; glumes exactly distichous, closely rigidly imbrieated, boat- 
shaped, ovate-triangular ; lower 6 (or 7) glumes empty, 7th glume 
male, without any trace of pistil, 8th bisexual, perfecting a nut, 9th 
very small or 0; hypogynous bristles 8-5, 2 the length of the nut; 
se). Tetraria brevicaulis, C. B. Clarke in Durand and Schinz, 
Conspect. Fl. Afr. v. 659. 
Sourm AFRica: without locality, Carmichael? in the British Museum. 
The 3 specimens collected by D. Carmichael are very fine complete examples 
with fruit ; it is nevertheless difficult to find a genus fur them. 
XXII. TETRARIA, Beauv. 
Spikelet 2-flowered, of several (or many) subdistichous glumes, 
Owest 4-10 empty ; Jower flower not perfecting a nut, male (or the 
on He 
anthers linear-oblong, often with ears at the base of lax tissue barren 
of pollen ; crest lanceolate-linear scabrous, Style continuous with 
the nut, dilated at the base, linear, branches 3 or 4, in a few species: 
t 8 linear. Nut obovoid, trigonous or subtetragonous ; 
apex of the nut 
“orien Species 82; endemic except T. circinalis, which is also found in 
yoo 1 Aulacorhynchus (Genus, Nees in Linnea, ix. 
foo: Spikelets all 1-sexual, moncecious, female 1- 
Wered; glumes not aristate; stamens 3; style- oes 
es 3; stem and leaves slender ... .. (1) erinifolia. 
Hemischeenus.— Fertile flower 2-sexual ; lowest 
eos not aristate; stamens 3; style 8-fid; stem 
Od leaves slender, the latter all close to the base of 
the stem des oes . os 
mk 3. Elynanthus proper, of authors.—Fertile flower 
aes lowest flower not preducing a nut, next 
phe It fertile; glumes not aristate, scarcely mu- 
(2) cuspidata, 
er or medium-slender 
Style-branches 3 or 4: r 
see 18, robusta) ; 
2 
Sien 
Plants with narrow leaves (but 
