NOTES ON INDIAN CHAROPHYTA. 371 
4. LYCHNOTHAMNUS Leonh. 
1. L. BARBATUS Leonh. 
1. Dhal Lake, near Srinagar, Kashmir, Oct., Sept. 1921. @, O. Allen. 
2. Depalpur, Indore State, March 1914. S. P. Agharkar. 
6. Bengal, prior to 1882, nos. 308 & 315. Sir G. Watt. 
Gonda, Oudh, 15th Dec. 1921 ; 1922, nos. 2, 15, 20, 27, 28 ; 1923, 
no. 32. G. O, Allen. 
Prior to Sir G. Watt’s discovery of this remarkably distinct plant in 
India, its known distribution was confined to a small part of Europe, viz. :— 
Germany, Italy, and a single locality in Eastern France. 
5. CHARA Linn. 
I. Haplostephane. 
1. C. WazzicHn Braun. 
6. Gonda, Oudh (9? and d), 15th Oct., Nov. (no. 9), Dec. (no. 26), 
1922 ; Lucknow, 8th Jan. 1923, no. 30. G. O. Allen. 
Mr. Allen’s rediscovery of this species is an important one. The specimen 
in the Wallich herbarium, collected in 1809 at Pirgunj (6), from which the 
species was described, consisted of the male plant only, and it had not, I 
believe, since been collected. Mr. Allen’s specimens of the female plant 
enable me to add particulars of the fruit. The vegetative parts of the 
female plant correspond fairly closely with Braun’s description of the male. 
The oogonia are clustered at the base of the whorl, both in- and outside 
the branchlets, and at the first and second branchlet-nodes, usually 2-3 
together at the former and 1 at the latter, and are much exceeded in length 
by the adjacent bract-cells. They are broadly ellipsoid, about 850-875 p 
long, 550-575 u broad, the spiral-cells showing 7-8 convolutions ; the 
coronula nearly straight, about 250 u broad, 150 « high. The oospores are 
broadly-ellipsoid to ellipsoid-cylindrical, + truncate at both ends, especially 
at the base, about 500-550 u long, 375-450 a broad (excl. ridges), showing 
6-7 strong prominent ridges, with very short claws ; membrane thick, firm 
and opaque. 
Closely allied to the Australasian C. australis (also dioecious) and to 
C. corallina (moncecious), but differing from both in the smaller fruits, elon- 
gated apical segments of the branchlets, and the well-developed bract-cells. 
From C. Brauni it differs in producing gametangia at the base of the whorl 
as well as at the branchlet-nodes. 
3. C. coRALLINA Willd. 
2. Depalpur, Indore State, 1914. 8. P. Agharkar. 
3. Malabar, no. 138. Herb. Kew, Chiplun, Ratnagiri, 1914. 8, P, 
Agharkar, 
