NOTES ON INDIAN CHAROPHYTA, 
5. CHARA. 
Stipulodes in a single circle ...................,................,... ee 
Stem and branchlets entirely ecorticate, 
Gametangia produced at the base of the whorl as well as at the 
branchlet-nodes. Stipulodes rudimentary. 
Diecious. Bract-cells moderately long. Oospores c. 500-550 long. 
Antheridium c. 900 a in diameter Plant moderately stout ... 
Monceious. Bract-cells extremely short. Oospores c. 750-875 u 
long. Antheridium c. 650 u in diameter, Plant usually very 
stout ee 
Gametangia not produced at the base of the whorl. Stipulodes + 
developed, alternating with the branchlets. Oospores c. 525-650 p 
long. Antheridium c. 275-325 u in diam. Plant rather slender. 
Stem corticate. 
Branchlets ecorticate, 
Oogonia and antheridia mostly produced at different branchlet- 
nodes. Branchlets 13-16 in a whorl, segments 6-8. Bract- 
cells numerous .................................., enema 
Oogonia and antheridia produced at the same branchlet-nodes. 
Branchlets usually 10-12 in a whorl, segments about 5. 
Ripe oospores golden-brown ............................,,,,......... 
Ripe oospores black... 
Branchlets + corticate, lowest segment ecorticate ........................ 
Stipulodes in a double circle ............. seme 
Rows of cortical-cells of the stem equalling the number of the 
branchlets ................ sss meme memes 
Diccious. Spine-cells clustered. Cortical-cells of the branchlets 
equalling the number of the bract-cells..….......................... 
Rows of cortical-cells of the stem twice as numerous as the branchlets. 
Cortical-cells of the branchlets twice as numerous as the bract-cells. 
Secondary cortical-cells of the stem more prominent than the primary, 
so that the spine-cells appear to lie in furrows.................. sss. 
Branchlet-segments mostly corticate. Gametangia not produced 
above ecorticate segments, Spine-cells solitary. Ripe oospores 
normally brown, very rarely black .................................... 
Branchlet-segments wholly or partially ecortieate. Some gamet- 
angia produced above ecorticate segments.  Spine-cells solitary. 
Ripe oospores brown ............................ eee 
Primary cortical-cells of the stem more prominent than the secondary, 
so that the spine-cells appear to stand on ridges ..................... 
Oospores black. Stipulodes usually somewhat irregular ............ 
Rows of cortical-cells of the stem three times as numerous as the 
branchlets ............... HMM 
Lowest branchlet-segment corticate, 
Dicecious. Stipulodes + elongated. Spine-cells rudimentary ...... 
Monæcious. 
Lowest branchlet-segment moderately long.  Cortical-cells of 
the branchlets twice as numerous as the bract-cells. Stipu- 
lodes and spine-cells rudimentary ................... eee eterne 
Lowest branchlet-segment very short. Cortical-cells of the 
branchlets about three times as numerous as the bract-cells. 
Stipulodes elongated acute. Spine-cells minute acute......... 
Lowest branchlet-segment ecorticate. Cortieal-cells of the branchlets 
three times as numerous as the bract-cells. Stipulodes elongated 
acute. Spine-cells acute. Monweious ............. ................., 
LINN. JOURN.—BOTANY, VOL, XLVI. 
Haplostephane. 
1 €. Wallichii. 
2. C corallina. 
9. C. Braun, 
4. C. erythrogona, 
5. C. flaccida. 
6. C. gymnopitys. 
7. C. hydropitys. 
Diplostephanæ. 
Haplostichæ. 
8. C. canescens, 
Diplostiche. 
Aulacanthe. 
9. C. vulgaris. 
10. C. yymnophylla. 
Tylacanthe. 
ll. C. contraria. 
Triplostichæ, 
12. C. infirma. 
13. C. fragilis. 
14. C. brachypus. 
15. C. zeylanica, 
2E 
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