22 A. W. Evans — I^orth American Species of Frullania. 



tinct laciniate lobe or cluster of cilia (stylus) ; bracteole (at least the 

 innermost one) connate on both sides with bracts, ovate, bifid one- 

 third or more with narrow subulate, acuminate lobes and narrow 

 sinus, margins revolute and entire above, dentate or ciliate toward 

 base ; perianth exserted one-third or more, ovate or oblong, gradu- 

 ally narrowed into a short broad beak, concave antically, compressed 

 on the sides and deeply one-keeled postically : antheridial s^nke 

 oval, occupying a short lateral branch, bracts in several pairs. 



Stems O-SO""" in diameter; lobes of leaves 1-20™°' long, 0-85'^'^ 

 wide, lobules 0-20™'" long, 0-15'°°^ wid'e ; underleaves O-eS™"" long, 

 0.85mm ^i^g . iQJbgg Qf branch-leaves 0-60""^ long, 0-35™™ wide ; 

 branch-underleaves 0'25'"™ long and wide ; leaf-cells from edge of 

 lobe 0-014'"'", from middle 0-023""^ in diameter, and from base 0-035'^'" 

 long, 0023'"™ wide ; bract I, lobe 2-00™™ long, 0-75™™ wide; lobule 

 •0-75™™ long, O-IS™"" wide; bracteole I, 1-35"'" long, 0-60™™ wide; 

 bract II, lobe 1-25™°^ long, 0-65™™ wide, lobule 0-55™™ long, O'lO""^ 

 wide; bracteole II, O'So"™ long, 0-30™™ wide ; perianth 2-50""" long, 



1-0 Qmm ^j(Jg^ 



On rocks and trees, from Alaska to northern California. Distrib- 

 uted in Can. Jlep. w. S (as F. Asagrayana, var.), n. 4 (as F. Asagray- 

 ana^ var. Californica), and n. 5 (in part). 



The determination of this species is based on Suilivant's descrip- 

 tion and on drawings in his herbarium : the type specimen was sent 

 by him to Gottsche, together with the rest of the Wilkes' hepatics, 

 and is presumably in Berlin. F. Nisquallensis has frequently been 

 confused with F. Tamarisci. 



13. Frullania Asagrayana Mont., Ann. des Sc. Nat., II. xviii: 14. 1842 (footnote). 



Plate XL 

 Dioicous : plants growing in depressed or pendulous tufts, reddish- 

 brown or more rarely paler and greenish : stems once or twice pin- 

 nate : leaves imbricated, the lobes ovate, arching over the stem and 

 cordate at base, rounded or obtuse at the decurved apex, entire ; 

 lobule separated from the stem by about half its width, obovoid- 

 clavate, contracted toward, base ; stylus a suborbicular disc-like 

 process bearing on its margin one or two minute cilia or run- 

 ning out into one or two acute points : underleaves distant, orbic- 

 ular-ovate, plane or rarely reflexed at the apex, bifid less than 

 half with obtuse lobes and sinus, sometimes appendiculate or slightly 

 aui'iculate at base : leaf-cells of lobe thick-walled, trigones and inter- 

 mediate thickenings becoming more conspicuous toward the middle 



