8 



w. H. PEARSON. 



[Xo. 3. 



rami postici, brevissimi; bracteae 5 vel 6 longiciliatae; 

 perianthia cylindracea, ore longiciliata. 



Syn. Jungermannia nematodes Gottsch. in Wright^ Hep. 

 Cubens. (Haud Jung. nemoides Tayl. Journ. Bot. 1845). 



Cephalozia nematodes (G.) Austin in Bulletin Torrey 

 Botanical Club vol. VI n. 52, April 1879. Underwood North 

 Amer. Hep. p. 97 (1883). 



Monoicous, plants small, confervoid, dull pale green or 

 white. Stems ^4 to an inch long, roundish, pinnate, ends 

 attenuate often furcate; branches short, rarely long, leafy 

 branches laterally inserted. Cells of the stems 4 or 5 in diam., 

 cortical cells 10-seriate, rat her larger and clearer. Leaves 

 distant, at right angles with the stem or slightly ascending, 

 succubous, divided down to the base into 3 rarely 4 long, 

 capillary segments of 4, 5 and 6 cells in a single series, with 

 a double row at the base; branch leaves with 2 rarely 3 

 segments; cells large, oblong, quadrate or hexagonal, two 

 or three times as long as broad, walls thiu, no trigones, 

 lumen clear. 



Underleaves trifid, rarely quadrifid, segments capillary 

 2 and 3 cells long, much shorter than the leaves, branch 

 underleaves bifid. Flowers 2 cladogenous, short, proceeding 

 from the under side of stem and curling upwards ; sometimes 

 arising from the under side of the leafy branches. Bracts 

 deeply divided beyond ^/s into 5, 6 or 7 long capillary 

 segments embracing ^/s of the perianth; bracteoles smaller 

 but equally deeply divided into 5 and 6 capillary segments. 

 Pistillidia long, 8 or 10. Perianth cylindrical. composed of 

 one layer of cells, 40 cells round near base and 60 where 

 widest, mouth longiciliate composed of about 20 cilia, 6 

 or 7 cells long, 2 cells wide at the base. Calyptra 

 dome-shaped, slightly folded near the apex, texture not 

 quite so delicate as in some species. Capsule oval; spores 

 brown round; elaters brown, bispiral with 10 turns of the 

 spires. Perigonial branches short, proceeding from the 

 under side of the stem, or leafy branch, bearing 3 or 4 



