CHARA. 423 
depressed primary tubes. Branches elongate, acuminate, of 7 
eo with 4—6 short bracts at each joining. Ditches and pits. 
. V.—VIII. 
14. C. tomentosa (L.); dicecious (?), st. thickened upwards 
spirally suleate rough brittle with scattered obtuse papille, 
branchlets incurved, bracts unilateral ovate-oblong mucronate- 
acute, nucule shorter than the bract on each side of it longer than 
the three in front.—C. latifolia Willd., Hook. Icon. 532.—Opaque, 
whitish green. St. covered with minute tubercles; papille distant, 
rather whorled, short, blunt, on the prominent primary tubes.— 
Belvidere Lake, Westmeath, Ireland. A. I. 
*** Stem coated with 3 times as many tubes as there are branchlets 
in each whorl, two rows of secondary between each pair of 
primary tubes on which latter alone the spines or tubercles 
are placed. 
15. C. aspera (W.); dicecious, st. finely striate smooth flexible 
with setaceous patent spines, branchlets short, bracts whorled 
slender (2 inner longer), nucules narrowly oblong shorter than 
the bracts.— E. B. 8. 2738.—Not opaque, pale green. St. densely 
crowded ; spines scattered, often very short, or irregularly 
whorled. Branchlets 6—9 in a whorl, of 7 jomts, 4—5 bracts 
at each joming. Nucules reat striz 12 or 13, crown pro- 
minent.—Stagnant water. A. VIII. 
16. C. fragilis (Desv.); moneecious, st. slender finely striate 
smooth not spinous, last 1—3 joints of branchlets without external 
tubes, bracts on the inner side of the branchlets about as long or 
longer than the oblong nucules.—Ati. Fl. Par. 38 C. C. Hed- 
wigit E. B. 8.2762. C. pulchella E. B. 8. 2824.—Slender, green, 
not incrusted. Nucule with 13 or 14 striz and a long crown, 
with the globule. Bracts usually shorter than the nucules, one 
equalling them ; or all longer.—Stagnant water. A. ev 
Posrcript.— Whilst this sheet is passing through the press I 
have learned from Mr. Purchas that the two supposed seeds of 
Luzula Borreri, mentioned at page 333, belong to L. pilosa. 
The true seeds of L. Borreri are “ as large as those of L. pilosa 
but have a straight blunt crest” as described by Dr. Bromfield. 
