J 22 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



fragmentary for a positive determination, more especially since 

 /. sphcerocarpa is otherwise unknown from California. 



17. Jungermannia lanceolata L. 



On wet soil along a stream, Lower Salmon Lake, Sierra 

 County, October, 1921, Mrs. Sutliffe. New to California; 

 widely distributed in northern regions and previously known 

 from Washington. 



18. Jungermannia pendletonii (Pearson) comb. nov. 

 Aplozia pendletonii Pearson, Bryologist 23: 50. pi. 2. 1920 



This interesting species was discovered by George M. 

 Pendleton on the western side of Mt. Shasta, at an altitude 

 of 4000 feet. Specimens collected on May 8, 1910, were 

 distributed by Miss Haynes in her American Hepaticse (No. 

 90), under the name Jungermannia cordifolia Hook.; the type 

 specimens were collected on August 4, 1917; and still other 

 material is dated April 16, 1919. Only the 1910 and 1919 

 specimens have been examined by the writer. 



Although /. pendletonii is amply distinct from /. cordifolia 

 the two species resemble each other very strongly, especially 

 when well developed. Both are characterized by a tufted 

 habit and a dark green color, often blackish when dry and 

 sometimes tinged with a purplish, brownish, or brownish red 

 pigmentation; both show occasional terminal branches of the 

 Frullania type and also intercalary branches, the latter arising 

 near the ventral bases of the leaves; and the leaves in both 

 tend to assume a suberect position, clasping and partially con- 

 cealing the stem. 



When the leaves are dissected off and spread out flat certain 

 differences at once become apparent. In /. cordifolia the 

 leaves are broadest just above the base and then taper gradu- 

 ally but distinctly to a rounded apex. They are usually de- 

 scribed as "heart-shaped," but the basal portion is rounded on 

 the sides rather than cordate and is even very slightly decur- 

 rent. The leaf-cells are characterized by their thin but often 

 pigmented walls, by the almost complete absence of trigones, 



