— 21 — 



NOTES ON A SMALL COLLECTION OF HEPATICS FROM OREGON 



Wm. Hy. Pearson 



I have had the opportunity of examining these specimens through the 

 kindness of Mr. James Murray, of Carlisle, who received them from the col- 

 lector, Mr. Charles Potter, of Portland, Oregon. The material was collected 

 during October, 1920. The locality, McKleay Canyon, is, I understand, within 

 the limits of Portland. Specimens have been deposited in the Manchester 

 Museum, England. 



Aneura latifrons Lindb. — Monoicous. Stems digitate; margin a layer of 

 one to two single cells; branches of 2-3 cells; cortical cells small, 25 antical 

 and 25 postical, 3 large inner cells thick at the middle, 12 cells broad; bracts 

 surrounding the calyptra laciniate, 5-6 cells long; calyptra tuberculate. Male 

 spikes small, narrow; bracts 4-6 pairs. — McKleay Canyon. 



Chiloscyphus adscendens SuUiv. — Some leaves acutely bidentate, under 

 leaves quadrifid, bracts bidentate. — Growing with Calypogeia fissa, McKleay 

 Canyon. 



Cephalozia Lammersiana (Huebn.) Spruce. — Monoicous; bracts of female 

 flowers entire or slightly notched on one side; male bracts with very large under- 

 leaves. — On rocks, south side of McKleay Canyon. 



Cephalozia media Lindb. — Dioicous; female bracts entire. — On rocks, south 

 side of McKleay Canyon. 



Calypogeia fissa (L.) Raddi. — Insertion of the leaves between patent- 

 divergent and patent (60°); leaves i. 1X0.9 mm.; walls thick, no trigones. — 

 On a bank in a damp location, McKleay Canyon. 



Lepidozia reptans (L.) Dum. — On rocks, south side of McKleay Canyon. 



Scapania Bolanderi Aust. — On rocks, south side of McKleay Canyon. 



Madotheca platyphylloidea Schweintz. — Female bracts, lobe, and lobule 

 acute, denticulate; bracteole obovate, slightly denticulate; perianth with a wide 

 mouth fringed with 25 four-celled, hamate teeth, composed of very small cells; 

 male spikes on chief stem or branches, bracts in four pairs, lobe-apex obtuse, 

 lobule smaller, apex acute, upper portion reflexed; bracteole entire, apex rotun- 

 date; two large antheridia in each bract. — On dead trees, and on a damp bank; 

 McKleay Canyon. On dry, shady soil, Clackamas Canyon. 



Lejeunea cavifolia (Ehrh.) Lindb. — On dry soil in shade, Clackamas Canyon. 



Frullania Calif ornica (Aust.) Evans. — Neatly pinnate; leaves semi-cordate, 

 lobule erect, close to stem, saccate; underleaves oval-rotund. 



18 Palatine Road, 

 Manchester, England 



