26 A. W. Evans — North American Species of Frullania. 



0-20'"™ wide; bracteole II, 0-80™'" long, 0-50"™ wide ; perianth l-70">'" 

 long, 0-80'"™ wide. 



On rocks and trees: British Columbia to California. Distributed 

 (as JB. JVisquallensis) in Hep. Bor.-Amer. n. 108 (in part), in Hep. 

 Amer. n. 102 (as t. Asagrayana^ var. Californica) and n. IJfS (as 

 !>. JVisquallensis), and (also as I^. Nisquallensis) in Can. Hep. n. 5 

 (in part). 



The specimens distributed in Hep. Bor.-Amer,, which we may con- 

 sider the type of Austin's 1^. Asagrayana, var. Californica, are a 

 mixture of this and the next species, and it seems allowable to retain 

 the name " Caiifornica " foi* the present series of forms. 



16. Frullania Franciscana Howe, Erythea, ii: 99. jil. 2. 1894. 



Frullania Asagrayana, var Californica Aust. in Underwood, Bull. Illinois State 

 Lab. Nat. Hist , ii : 67. 1884 (in part). 



Frullania uneiflora, var. Californica Gottsche in Bolander: Catalogue of the plants 

 growing in the vicinity of San Francisco. 1870. 



Plate XIII. figs. 1-8. 



Dioicous : plants appressed to matrix or growing in wide depres- 

 sed tufts, reddish-brown, varying to greenish ; stems mostly bipin- 

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

 cordate at base, rounded, obtuse or apiculate at the decurved apex, 

 entire ; lobule separated from the stem by about its own width, 

 ahort-clavate ; stylus minute : underleaves distant, plane, rhombic- 

 ovate, bifid about one-third with obtuse lobes and narrow sinus, 

 margins usually bluntly nnidentate at about the middle, neither 

 auriculate nor appendiculate at base : leaf-cells of lobe rather thick- 

 walled, trigones and intermediate thickenings becoming more con- 

 spicuous toward the middle and the base ; discolored cells usually in 

 a short median line, sometimes obsolete : ? inflorescence terminal on a 

 short branch ; bracts in about three pairs, unequally bifid, the lobe 

 ovate, acute or acuminate-apiculate, ciliate at antical base, otherwise 

 entire ; lobule ovate or lanceolate, acute, bearing a cluster of cilia 

 toward base, otherwise entire ; bracteole connate on one side with 

 bract, ovate, bifid about one half with lanceolate, acuminate lobes and 

 narrow sinus, ciliate at base, otherwise entire ; perianth oblong- 

 obovate, abruptly short-rostrate, compressed on sides and with a deep 

 postical keel, smooth. 



Stems 0-17"'™ in diameter : lobes of leaves 0-9/3""" long, 0-70"^"^ 

 wide, lobules 0-25™™ long, 0-1 2'"'" wide ; underleaves 0-40™'" long, 

 0.35mm ^j(jg . iQJjgg q£ branch-leaves 0'35"'" long, 0-25™'" wide ; 



