Cyperus] XXVII. CYPERACES, 115 
Condo and Quisonde on the right of the river Cuanza; Mar. 1857. 
No. 6924. 
22. C. denudatus Linn. f. Suppl. Pl. p. 102 (1781) ; C. B. Clarke, 
J.c., p. 555. 
HvILLa.—Dried-up ponds near Nene; May 1860. No. 6861. 
23. C. spheerospermus Schrad. Anal. Fl. Cap. p. 8 (1832); C. B. 
Clarke, l.c., p. 577. 
C. hwillensis Ridl., Lc., p. 139, including var. aphylla. 
Huitia.—Rhizome tuber-bearing. Here and there in fields now 
neglected but formerly sown with Solanum tuberosum ; beginning of 
May 1860. No. 6865. Widely cespitose among herbage in thickets 
between Nene and Humpata; May 1860, No. 6867. Low rather 
dry hills grown with short thicket near Humpata; April 1860. 
No. 6868. At the foot of Serra de Oiahoia, Sobato Humpata ; end 
of April 1860. No. 6869. Plentiful on the stream near Bumbo ; June 
1860. No. 6889. 
24, C. difformis L. Cent. ii. Plant. p. 6 (1756) ; Ridl., Zc., p. 137; 
C. B. Clarke, J.c., p. 556. 
Barra DO DanpE.—Widely cespitose, culms weak, 1 to 1} feet 
high, spikes tawny yellowish. On the banks of a lake near Bombo 
near the banks of the river Dande ; Sept. 1858. No. 7027. 
Loanpa.—In the clayey bottom of dried-up ponds near Forte de 
Conceicao, but very rare ; 12 July, 1854. No. 7065. 
Ampaca.—Cespitose at the lake Canguéle-Canganga and on the 
banks of the river Caringa; June 1855. No. 7066. 
GoLunco ALTo.—Very widely cespitose; culms acutely triquetrous, 
colour of the whole plant yellowish green. Very rare on spongy 
islands of the river near Bauza de Bango ; 30 April and 1 May 1856. 
No. 7067. 
Punco Anponco.—In wooded ponds between Condo and Calemba 
Islands ; March 1857. No. 6933. Marshy places at Luxillo; April 
1857. No. 6934. 
MossaMEDES.—In damp sandy places near the river Bero at Caval- 
heiros; July 1859. No. 6853. In grassy places flooded in summer 
on the banks of the river Bero near Cavalheiros, but found only here 
and there ; August 1859. No. 6883. 
25. C. dichroostachyus Hochst. ex A. Rich, Tent. Fl. Abyss. ii. 
p. 481 (1851); Ridl., dc; C. B. Clarke, dc. 
Hvi1tLa.—By wooded ponds near the banks of the river Mupanda ; 
end of Feb. 1860. No. 6864. 
26. ©. leucocephalus Retz. Zc. p. 11; Ridl., c.; C. B. Clarke, 
lc, p. 566. 
C. seslerioides Ridl., U.c., p. 180 (non H.B.K.). 
Pcenco ANDoNGo.—Rain swamps in rocky places between the 
presidium and Quilanga; Feb, 1857. No. 6772. No. 7146 (no in- 
formation). Heads snow-white. Forms a striking ornament of the 
short-grassed wooded pastures in springtime (December). Plentiful 
in thickets and wooded pastures of the presidium, especially near 
Quilanga and Catete; Dec. 1856.. No. 7147. 
Hurtia.—A rigidulous herb 4 to 6 in. high; heads snow-white, 
almost spherical, compact. Habit exactly that of Ascolepis, but the 
