Hypolytrum. | CLVI. CYPERACER (CLARKE). 487 
Leaves triangular at the tip; stems 4-10 in. long, 
with 15-25 spikes. c - a 
Leaves lanceolate, caudate; stems 3-5 ft. long, with 
35 spikes . : 2 S : 5 - . 3. H. lancifolium, 
2. H. congense, 
**Scapos®. Basal leaves long, Stem scapose, with no node or rarely 1 near the 
top: stem-leaf (if present) and bracts very short. 
Spikes 3 in. long, oblong or oblong-ellipsoid =. 4. H. africanum. 
Spikes 4-2 in. long, globose in fruit. 
Scape 8-12 in. long, slender, with 8-16 
spikes . : 5 : : é . 5. H. senegalense. 
Scape 20-28 in. long, stout, with 40-100 
spikes . 4 : - 6. H. longiscaposum. 
1. H. nemorum, Spreng. Syst. i. 233, excl. synonyms and some of 
the habitats. Nearly glabrous. Stolons stout, clothed by broad-ovate 
striate brown scales $ in. long, hardening into rhizomes ,}; in. in diam. 
Stem 15-30 in. high, tough, with nodes carrying long leaves, often 
scabrous at the top. Stem leaves 1-2 ft. by 3-1 in., 3-nerved, very 
scabrid on the margin, tip acuminate-caudate. Panicle often 4—6 in. 
long and broad, with often 50-150 spikes ; peduncles rigid, divaricate ; 
lowest. bract leaf-iike, usually much exceeding the panicle. Spikes 
solitary or almost clustered, of 10-20 spikelets, in flower } in. long and 
harrow-cylindric, in fruit + in. long and globose. Bract to the spikelet 
ty in. long, broadly orbicular. Glumes to the two lowest male flowers 
oblong, keeled, nearly as long as the bract. Sterile flower (between the 
male flowers and nut) 0. Style 2-fid. Nut scarcely longer than the 
male glumes, obovoid, flattened, smooth, dusky-brown, apparently 
hbeakless, i.e. the style-base entirely fused into the nut.—C, B. Clarke in 
Durand & Schinz, Conspect. Fl. Afr. v. 666; K. Schum. in Engl. Pf. 
Ost-Afr. C. 127. H. latifolium, Benth. in Hook, Niger FI. 555 ; Boeck. 
in Linnea, xxxvii. 129; vix L. C. Rich. A. heterophyllum, and H. 
buchholzianum, Boeck. Cyp. Nove, i. 22.  Hypelyptum nemorum, 
Beauy. Fl. Owar. ii. 13, t. 67, not Schenusnemorum, Vahl. Hypelytrum 
nemorum, Dietr. Sp. Pl. ii. 364 partly. 
Upper Guinea. Senegambia, Heudelot, 64! Sierra Leone, Smeathmann / 
Afzelius ! Scott-Elliot, 4575! Lagos, Millen, 193! Lower Niger: Abo, Buchholz ! 
Cameroons : Rio del Rey, Johnston! Mungo ; Buchholz / by the Lobe River, near 
Batanga, Bates, 149! Fernando Po, Vogel, 206! Mann, 120! 
Lower Guinea. Spanish Gaboon: Mount John, Kongue River, Mann, 18947 
Lower Congo : Stanley Pool, Laja, 31! Duchesne, 27! Kisuntu, Gillet, 1792! 
South Central. Congo Free State, Dewevre, 288! 
Mozamb. Dist. (ierman East Africa: Usambara ; at Nquelo, Holst, 2288! 
2. H. congense, (’. B. Clarke. Stolons densely covered by ovate 
Seales. Stems 4-10 in. long, carrying 2 leaves far above the base, 
smooth, in Dewevre 746 glabrous, in Dewevre 1061 bis hairy. Basal 
leaves overtopping the stem, } in. broad, the tip narrow-triangular ; 
stem-leaves similar but smaller, overtopping the inflorescence, not cau- 
date and scarcely acuminate at the tip. Corymb 3-} in. in diam., 
