436 
102. CHAEACE^. 
10. C. polysper'ma (A. Br.); monoecious, st. slender equal 
flexible transparent, barren and fertile hranchlets of the prmxary 
whorls once or twice unequally branched, middle branch longest, 
brauchlets of axillary branches many densely crowded much 
subdivided into short joints mostly finely pointed, nticides and 
globules placed at the ioinings of the branchlets between the 
lateral rays. — Small, branches with 2 or 3 ascending branch- 
lets, often again branched, at their first joining; often but not 
always there is a simple branchlet beneath and at right angles 
to the main branch at that point. Globules stalked, directed 
downwards, few. Nucules clustered, sessile, directed upwards. 
— Eunning water. Biuy St. Edmunds. Cambridge. Dublin. 
A. IV. K I. 
n. Chaha Ag. — Crown of the nucule of 5 cells forming a 
single circle, sometimes spreading, persistent. Stems usually 
coated with smaller tubes. — Granule taking the place of one of 
the bracts. A double row of spines at the oase of each whorl. 
* Stem coated ivith as mam/ tubes as there are branchlets in each 
tchorl. — Branchlets coated. 
11. C. crinita (V^'allr.) ; dioecious, st. slender coarsehj striate 
thickly beset with setaceous patent clustered spines, branchlets 
short, bracts whorled slender equal, nucules narrowly oblong 
shorter than the bracts. — Wallr. Ann. Hot. t. 3. — Slender. St. 
erect, flexible, smooth, densely crowded, slightly branched, pale 
reen. Whorls of 8 — 10 short branchlets, each of 7 joints with 
bracts at each joining. Nucules solitaiy with 13 striae and a 
prominent crown. — Stagnant brackish pools. Burdoch Pool, 
Falmouth, Cornwall. Eev, W. L. P. Garnons. A. VIIl. E. I. 
** Stem coated with twice as many tubes as there are branchhts 
in each whorl, those opposite to the branchlets bearing spiiws 
or tubercles, the others not. 
12. C. vulgaris (L. ?) ; monoecious, st. rough finely striate 
brittle, upper part of the branchlets without external tubes, 
bracts only on the inner side of the branchlets, four long, two 2— i 
times as long as the nucides, two equalling them. — E. B. 336. 
C. fcetida A. Br., Atl. Fl. Par. 37.— Dift'use, usually incrusted. 
The spinose or tubercular ( primaiy) cortical tubes less prominent 
than tlie secondary ones, collapsing when dry so as to place the 
spines in furrows." Nucides with 13 striae and a short crown, 
with the globule. — Ditches and streams. A. VI. — VIII. E. S. 1. 
13. C his'pida (L.) ; monoecious, st. thickened upwai-ds spirally 
furrov.cd rough brittle with setaceous spines, branchlets long, 
bracts whorled (inner ones longer), nucules ovate shorter than tlie 
bracts solitary with a globide.— £ B. 43G. Atl. Fl. Par. 38 B. 
