70 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 
Plants often tinged with brown; ventral lobes of stem 
leaves arching partially or wholly across the axis, and 
attached by a short oblique line; leaf cells with distinct 
{riSOMeESs CiGICOUS: nc cick eae week aces eae Fee eS R. tenax 
2. Subfloral innovations usually none.............. R. complanata 
Subfloral innovations single or double............ R. obconica 
Radula complanata (L.) Dumort. 
On rocks and trunks of trees. May and June. LircuH- 
FIELD: Goshen, Underwood; New Milford, Evans. Hart- 
FoRD: Windsor, WV. E. Britton. WixpHAM: Canterbury, 
Mrs. Hadley. FarrFiecp: Redding, (iss Haynes; Sherman, 
Evans. New Haven: Cheshire, Harger; Hamden and New 
Haven (1866), Eaton; North Haven, Orange, and Sevmour, 
Evans. \IDpLESEX: Killingworth and Middlefield, Evaus. 
Rer. Eaton, 15, 70. Evans, 28, 172. 
Quebec to Alaska, south to Florida, Louisiana, and Cali- 
fornia; Europe; Asia; northern Africa. 
Radula obconica Sull. 
On shaded rocks in ravines. FAIRFIELD: Redding, Evans. 
New Haven: Hamden (1891), Evans; Oxford, Harger. 
MuippLesex: Killingworth, Nichols, 
Connecticut west to Ohio and south to Georgia. 
Rer. Evans, 26, 213; 28, 172. 
Radula tenax Lindb. 
On shaded rocks. Litcurietp: Salisbury, JJ/iss Lorenz; 
FairrigLp: Redding, Jliss Hayues. New Haven: Bran- 
ford and Naugatuck (1890), Evans. 
New England to North Carolina. 
Rer. Evans, 28, 172. 
Porella (Dill.) L. 
1. Ventral lobes lingulate-oblong, closely appressed to the 
stem or to the dorsal lobessics cs sicc sedis cu canon P. pinnata 
2. Ventral lobes slightly or not at all decurrent; underleayes 
contiguous or slightly imbricated............. P. platyphylla 
Ventral lobes long-decurrent; underleaves distant..P. rivularis 
