214 WILLIAMS: THE GENUS DESMATODON 
size or sometimes the teeth: reduced to short irregular lobes, 
scarcely evident above the persistent annulus of about two rows of 
cells; lid high-conic or shortly beaked, the cells in slightly oblique 
rows and mostly elongate about half way up the lid; spores smooth, 
up to 10 in diameter; calyptra cucullate, descending to about the 
middle of capsule. [Fic. 5.] 
TYPE LOCALITY: Switzerland. 
DISTRIBUTION: New Brunswick to Vancouver Island and 
southward to Ohio, Missouri, Arizona, and California; also in 
Europe, Turkestan and Africa. 
ExsIccATAE: Sull. & Lesq. Musci Bor. Am. 93, 120; Holz. 
Musci Acro. Bor. Am. 17. 
ILLUSTRATIONS: Schwaegr. Suppl. 1: pl. 129; B.S.G. Bryol. 
Eur. pl. 133. Sull. Ic. Musc. pl. 29. 
6. DESMATODON PoRTERI James in Aust. Musci App. 123. 
1870 
Barbula subcarnifolia C. Miill. & Kindb.; Macoun, Cat. Can. PI. 
G: 52. :: 1802; 
Dioicous, male plants rather smaller than the fertile and mixed 
in with them, the flowers terminal or lateral by innovations from 
just below the apex, with outer antheridial leaves about 1 mm. long, 
broadly ovate-lanceolate, acute, papillose in upper part and cos- 
tate, the inner leaves much smaller, pale, smooth, enclosing quite 
numerous antheridia about 0.2 mm. long with nearly filiform para-— 
physes: fertile plants in compact tufts with stems usually 2-3 mm. 
high; leaves spreading, flexuous or somewhat incurved when dry, 
the upper about 2 mm. long, mostly broadly ovate-lanceolate, 
the apex acute, the margins flat and in the older leaves rather 
distinctly yellowish-bordered from a little below the apex to near 
the base with two or three rows of somewhat larger more elongate 
cells, less densely papillose than those within or often smooth; 10 | 
the younger leaves this border is scarcely evident or appearing only 
as a paler margin; costa percurrent, papillose on the back, in cross- 
section showing about four guide-cells with a row of three or four 
cells of about equal size on ventral side and on dorsal side a large 
stereid band with outer cells differentiated; cells of upper part of 
leaf mostly very obscure with minute, often C-shaped papillae, the 
median cells not elongate, somewhat four-sided, about 8 y in diam- 
eter, those in the border about one half way down mostly elongate; 
the cells of lower one third of leaf pale, smooth, shortly rectangt’ 
lar or elongate-hexagonal; perichaetial leaves slightly differenti- 
