10. 
ii 
oe 
PLANTS OF RHODE ISLAND. 107 
varians, (Hass.) Kg. Roger Williams Park, &c. 
quinina, (Ag.) Common. 
communis, (Hass.) Kg. Providence, &e. 
Zygnema cateneforme, Hass. Alg. Rhod. No. 95. 
longata, (Vauch.) Kg., & vars. 
Zygnema malformatum, Hass. Alg. Rhod. No. 94, in part. 
nitida, (Dillw.) Link. Geneva Pond. 
setiformis, (Roth.) Kg. Common in ponds; Providence, 
Mr. Lathrop. : 
adnata, Kg. Providence, Mr, Lathrop. 
rivularis, Rab. Providence, Mr. Lathrop. 
ZYGNEMA, Ktz. 
leiospermum, D. By. Geneva Pond. 
insigne, Kg. Providence. 
Tyndaridea, —, Hass. Alg. Rhod. No. 100. 
stellium, Ag. Common. 
var. genuinum, Kirch. Common. 
var. Vaucheria, Ag. Providence. 
- Tyndaridea btcornis? Hass. Alg. Rhod. No. 99. 
var. stagnale, Ky. Common. 
anomalum, (Hass.) Kg. Quidnesset, &c. 
var. crassum, Wolle. With the typical form. 
ZYGOGONIUM, kg. 
pectinatum, Kg. Quidnessett, &c. 
decussatum, (Vauch.) Kg. Davisville Brook, &c. 
MESOCARPUS, Hass. : 
parvulus, (Hass.) D. By. Providence, &c. No. 101. 
radicans, Kg. Blackamore Pond, &ce. 
nummuloides, Hass. Providence, Mr. Lathrop; Pocas- 
set, &c. 
PLEUROCARPUS, A. Br. 
mirabilis, A. Br. Common. 
STAUROSPERMUDUM, Eg. 
capucinum, Kg. Providence, &c, 
viride, Kg. Providence, Mr. Lathrop. 
Desmidiee. 
HYALOTHECA, Ebrh. 
desiliens, (Sm.) Breb. Common. No. 114. 
var. hians. Quidnessett, &c. 
mucosa, (Mert.) Ralfs. Spectacle Pond, &c. No. 115. 
dubia, Kg. Mashapaug. 
BAMBUSINA, Ktz. 
Brebissonii, Kg. Common. 
Didymoprium Borreri, Ktz. Alg. Rhod. No. 117. 
