144 JUNGERMANNIACEAE 
Anthelia julacea (L.; Limpr.) Dumort.—a nearly related species, 
which may be expected to occur in California—is distinguished by 
its larger size, dioicous inflorescence, thicker-walled leaf-cells, and 
bispiral elaters. | 
31. PTILIDIUM Nees, Naturgesch. Eur. Leberm. 1:05. 183$. 
Dlepharosia Dumort. Rec. d'Obs. Jung. 16. 1835. 
Usually in dense and commonly brownish mats. Stem pros 
trate or ascending, 1—2-pinnate or irregularly and sparingly 
branched, eflagelliferous, the branches lateral; root-hairs few and 
short. Leaves obliquely inserted, twice bifid to below the middle 
ог palmately 3—5-cleft, the dorsal segments larger and incubous, 
all filiform-acuminate, the segment-margins entire, or more com- 
monly fringed with long, simple or branched cilia. Underleaves 
much smaller but otherwise somewhat similar, more or less dis- 
tinctly 2- or 3-parted.  Antheridia short-stalked, on the main stem 
or lateral branches, in the axils of more concave and more closely 
imbricate but otherwise scarcely modified leaves. Archegom? 
terminal on what is primarily the main stem or a principal branch, 
the perianth, however, through innovation below, finally apical on | 
a short apparently lateral or dichotomously divergent branch. _ 
Bracts commonly one or two pairs, similar to the leaves of often 
more profusely ciliate-laciniate. Perianth free, several times 1019 
than the bracts, cylindrical-obovate, ciliate and subplicate at Ше 
somewhat contracted mouth. Calyptra free. Capsule ovoid са 
moderately long seta, dehiscing to the base by four rather 18 
valves, the cells of the latter bearing semiannular and also БОК 
nodular thickenings. Spores punctulate, several times М 
than the 2- (3-) spiral elaters. 
г. Pritipium Carirornicum (Aust) Underw. & Cook, Hep Am 
бо. Мау, 1890. Pearson, List Can. Hep. 7. 16 Је. ! 
Lepidozia ? Californica Aust. Bull. Torr. Bot. Club, 6: 1? | 
1875. 
i + 102. 
Mastigophora Californica Aust. Bull. Torr. Bot. Club, 6: 30 
1879. 
Brownish or greenish-yellow, usually in dense appressed т. | 
stems subfiliform and flaccid ог becoming somewhat stout, M 
2-3 cm. long, irregularly and sparingly branched, rarely 51 
nate or subbipinnate : leaves loosely imbricate, palmately S ak 
cleft to below the middle, the segments lanceolate or mere 
monly linear-lanceolate, filiform-attenuate, unequal, ри 
