NOTES ON INDIAN CHAROPHYTA. 367 
8. Nırenna Warrti species nova. (Pl. 36.) 
Homeoclema arthrodactyla flabellata macrodactyla gloocephala monoica. 
Ramuli insequales plerumque tris-furcati, partim aliquando quaterfurcati. 
Radius primarius elongatus, dimidium ramuli tote longitudinis superans ; 
radii penultimi multo abbreviati, dactylos 5-6 elongatos, semper bicellulatos 
gerentes. 
Stem slender (diam. c. 400 a). Whorls of 6-7 rather short branchlets of 
unequal length.  Branchlets usually three times furcate, some of the quater- 
nary rays occasionally again divided. Primary ray exceeding half the length 
of the entire branchlet ; secondary rays 6-7 usually elongated ; tertiary rays 
5-6, some simple, some forked, the latter usually very short ; dactyls 5-6, 
very slender (diam. c. 40-65 a), when quaternary or quinary more than twice, 
often three times, as long as the penultimate rays, always 2-celled, the lower 
cell much curved at the base, slightly tapering at the apex, ultimate cell 
elongate-conical, c. 50-80 u long, 20-25 y broad, with long acuminate point. 
Oogonia solitary, produced at the third (and fourth when present), and 
occasionally at the second, node, c. 300-320 y long (excl. coronula), 225- 
240 u broad, spiral-cells showing 8-10 convolutions; coronula c. 30 y high, 
45 a broad. Oospores broadly ellipsoid, c. 200-225 y long, 175-200 a broad, 
125 a thick, showing 7-8 thin fairly prominent ridges with narrow flanges, 
scarcely crested, warm chestnut-brown ; membrane with vermiform decora- 
tion. Antheridia produced usually at the second, sometimes at the first node, 
diameter c. 225 u. 
6. Mugra (prior to 1882), no. 306. Sir @. Watt. 
Sir George Watt's larger specimen shows a plant about 20 cm. high, of 
slender graceful habit, the fruiting whorls not forming distinct heads. The 
mucous cloud is hardly perceptible to the naked eye in the dried plant. 
The outstanding features seem to be the unequal length of the branchlets in 
the same whorl, and the much abbreviated penultimate rays, surmounted by 
the cluster of dactyls, presenting a tassel-like appearance. 
9. N. TENUISSIMA Kütz. 
A form of this species, var. byssoides, is recorded by Braun from (5) the 
coast of Coromandel (Bélanger 1826-8). I have not seen a specimen. It 
is to be hoped that it may be again collected, as from Braun’s remarks it 
would appear to differ considerably from the typical form. 
© AX. tenuissima occurs in many countries in Europe, in N. Africa, 
N. America, and the West Indies. 
10. N. BATRACHOSPERMA Braun. 
6. Gonda, Oudh, 30th Dec. 1922, no. 24. @. O. Allen. 
The first record for India for this minute species. A doubtful plant 
