—70 - 
young spruce, bluffs below Cathlamet, Wash., Sept. 23, 1906. (511 in part) 
At base of alders, Cathlamet, Wash., March 5, 1907. (492b) Cathlamet, 
Wash., Jan. 26, 1907. 
53. Radula complanata (L.) Dumort. 
(K) On rotten log in shelter, Hamilton, Wash., March 13, 1905. (No. 
C 2) On vine maple, near Town Hall, Hamilton, Wash., May 24, 1905. 
(492 C) On willow in swampy tide-flat below Cathlamet, Wash., Oct. 29, 
1906. (492) On bark of alder trees, open woods, Cathlamet, Wash., Feb. 
16, 1907. 
54. Porella navicularis (Lehm. et Lindenb.) Lindb. 
(C) On trees, brush, etc abundant, Hamilton, Wash., Oct. 20, 1904. 
(Abundant everywhere west of the Cascades, Foster). (931) On shrubs, in 
thickets, Aberdeen, Wash., March 20, 1909. Another specimen collected 
same locality, March 13, 1909. These two last mentioned specimens show 
this species possessing the modification due, Dr. Howe believes, to the influ- 
ence of an epiphytic fungus. “The leaves were bilobed rather than bipar- 
tite , the union of the lobes resembling that of Lejeunea or Radula. The 
ventral lobes were shortened so that their longer axils was nearly parallel to 
the dorsal lobe and were conspicuously inflated as in most of the Lej euneae. 
The underleaves were also shortened and often ventricose.” For fuller 
details see Howe: The Hepaticae and Anthocerotes of California, page 168. 
This Washington species was found growning with Radula complanata and 
Radula Bo lander i , a fact Dr. Howe mentions in connection with those found 
in California. 
55. Porella rivularis (Nees) Trevis. 
(L) On shrubs along slough, quite moist, Hamilton, Wash., Feb. 25, 
1905. On leaning alder, deep shade, Cathlamet, Wash., March 30, 1907. 
Det. Miss Clark. (931) On shrubs in thicket, Aberdeen, Wash., March 20, 
1909. 
56. Porella Roellii Steph, 
(339) On ledge of loose stones, McCleay Canon, Portland, Oregon, 
April 9, 1906. (340) On rocks in shade, high bluffs, Oregon City, Oregon, 
April 16, 1906. (K 2) On basaltic bluff overlooking Bridal Veil Falls, 80 
ft. high, Bridal Veil, Oregon, 28 miles from Portland, Oregon, by O. R. & N. 
Ry. up Columbia River, Aug. 9, 1905. 
57. Frullania Bolanderi Aust. 
(702) On trunk of Populus tremuloides , Henry Island, facing “ Canal 
de Haro” Puget Sound, Wash., July ir, 1907. Det. Miss Clark. 
58. Frullania californica Aust. 
(341) On porphyritic wall, northern exposure, Cliffs, ‘‘Stoney Butte” 
(East) Portland, Oregon, April 23, 1906. 
59. Frullania franciscana M. A. Howe 
On Pinus contorta , Westport, Wash., April 15, 1908. Det. Miss Clark. 
