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PLANTS OF RHODE ISLAND. 109 
Cucumis, Ehrh. Common. 
acerosum, (Schrank). Pocasset, Spectecle Pond, &c. 
ensis, Delpont. Providence. 
turgidum, Ehrh. Providence, Mr. Lathrop. 
strigosum, Ehrh. Common. 
striolatum, Ebrh. Common. No. 160. 
costatum, Corda. Providence, &c. 
lineatum, Ebrh. Spectacle Pond, &c. 
areolatum, Wood. Rare, Spectacle Pond. 
Diane, Ebrh. Quidnessett, &c. 
acuminatum, Kg., var. minor. Providence. 
Jenneri, Ralfs. Common. 
Venus, Kg. Blackamore and Spectacle Ponds. 
parvulum, Naegr. Common. 
moniliferum, Ehrh. Spectacle Pond, &c. No. 159. 
Leiblinii, Kg. Providence, Mr. Lathrop ; Quidnessett, &c. 
rostratum, Ebrh. Scarce in Spectacle Pond; Providence, 
Mr. Lathrop. 
Kuetzingii, Breb. Davisville; Providence, Mr. Lathrop. 
setaceum, Ehrh. Providence, &c. 
DOCIDIUM, Breb. 
crenulatum, (Ehrh.) Lonsdale Pond. 
D. nodulosum, Ralfs. Alg. Rhod. No. 152. 
Trabecula, (Ehrh.) Naegr. Providence, &c. 
truncatum, Breb. Providence, Quidnessett. 
Baculum, (Breb.) D. By. Common. No. 53. 
coronatum, Rab. Among Charas in Spectacle Pond. 
constrictum, Bailey. Worden’s Pond; Prof. J. W. Bailey. 
No. 155. 
nodosum, Bailey. Prof. J. W. Bailey. No. 154. 
verrucosum, (Bailey,) Ralfs. Prof. J. W. Bailey. No. 156. 
dilatatum, (Cleve.) Lund. Providence. 
minutum, Ralfs. Providence. 
verticillatum, Bailey. Worden’s Pond, Prof. J. W. Bailey, 
Providence, &c. No. 157. 
gracile, Bailey. 
rectum, Delp. Providence. 
Archeri, Delp. Spectacle Pond. 
CALOCYLINDNRUS, D. By. 
Cucurbita, (Breb.) Kirch. Providence. 
Cosmarium, —, Ralfs. Alg. Rhod. No. 140. 
curtus, (Breb.) Kirch. Spectacle Pond. 
*var, ? Blackamore Pond. 
Providence, &c. 
* This form is quite narrow, but of equal length with type. 
