400 CLVI, CYPERACEX (CLARKE). | Mariseus. 
51. M. squarrosus, C. 2. Clarke in Hook. f. Fl. Brit. Ind. vi. 623. 
A slender glabroys annual. Stems tufted, 1-5 in. long, at the top 
trigonous and smooth. Leaves as long as the stem, ;},—} in. broad. 
Umbel subsimple; rays 1-5 in. long; bracts much longer than ‘the 
umbel, similar to the leaves. Spikes of 6-20 spikelets, densely spicate. 
Spikelets compressed, 6-20 flowered, greyish-green to brown, divaricate, 
disarticulating in one piece above the two lowest empty glumes. Glumes 
boat-shaped, the 3-5-nerved keel excurrent into a recurved bristle. 
Stamen | ; anther linear-oblong, not crested. Nut 4 the length of the 
glume (exclusive of the bristle), linear-oblong, trigonous, curved, 
chestnut-red. Style $ the length of the nut, red; branches 3, linear, 
short.—C. B. Clarke in Durand & Schinz, Conspect. FI. Afr. v. 594. 
Cyperus squarrosus, Linn. Amon. Acad. iv. 303, and Sp. Pl. ed. 
ii. 66 partly; Rottb. Descr. et Ic. 25, t. 6, fig. 3; Kunth, Enum. ii. 
22; Boeck. in Linnea, xxxv. 501; C. B. Clarke in Journ. Linn. Soe. 
xx. 284 and xxi. 94 (excl. var. 8); K.Schum. in Engl. Pfl. Ost-Afr 
C. 118. C. maderaspatanus, Willd. Sp. Pl. i. 278, excl. syn. Plukenet ; 
ef. Benth. Fl. Austral. vii. 268 in note. 
Nile Land. British East Africa: Mombasa, Taylor ! 
Mozamb. Dist. British Central Africa: Nyasaland; Buchanan, 624¢! 
Also in the Mascarene Islands, India and Cochinchina. 
52. M. hemispheericus, C. B. Clarke in Durand & Schinz, Con- 
spect. Fl. Afr. v. 589.  Glabrous. Rhizome short. Stems 1}-38 
ft. long, robust or medium-sized, at the top trigonous and smooth or 
somewhat rough. Leaves ? the length of the stem, up to $ in. broad, 
often scabrous on the margins; the large examples have stout leaves 
often marked with transverse lines, smaller examples have much greener 
and narrower leaves. Umbel simple or compound ; rays attaming 2 in. 
in length, or more frequently rays very short and the umbel condensed ; 
bracts 9, similar to the leaves, the lowest attaining 8-12 in. in length. 
Spikes densely spicate, of numerous rectangularly spreading spikelets, 
very white or shining straw-coloured in the typical form, but some 
examples (even young) are dusky-brown. Spikelets up to 1 by yo 2+ 
with 18 nuts, more usually shorter with 6-10 nuts, in fruit appearing 
distinctly compressed, but in examples (not ripe) where the glumes are 
adpressed erect the spikelets are subterete or very little compressed ; 
rhachilla disarticulating in one piece above the 2 lowest empty glumes. 
Lower empty glume sometimes lanceolate and muticous, eee 
terminating in a long twisting bristle. Glume ovate, obtuse, boat-shape¢, 
1-coloured, obscurely 9-nerved, in the typical form very minutely ciliate 
on the upper margins. Nut } the length of the glume, narrowly eae 
hardly curved, black. Style 4 the length of the nut; branches A 
linear.— Mariscus sp. n. 2, T. Thoms. in Speke, Nile, Append. ee 
Mariscus cf. dactyliformis, C. B. Clarke in Trans. Linn. Soc. ser. *: 
Bot. iv. 53. Cyperus hemisphaericus, Boeck. in Flora, 1859, 436 ee 
(a typogr. error for 439 bis.), in Peters, Reise Mossamb. Bot. 541,.00 
in Linnea, xxxvi. 345; Oliver in Trans. Linn. Soc. xxix. 166; *- 
