334 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



the segments broadly triangular, curved, the margins incised, monandrous; an- 

 theridial stalk uniseriate. Female inflorescence lateral on a filament, with numerous 

 rhizoids from the base, the bracts and bracteoles tristichous, in 2 or 3 series, the 

 inner series largest, long-ovate, bifid to one-half their length, the segments triangular, 

 with coarse marginal teeth. Perianth long, 3-keeled in the upper half, the mouth 

 of 6 long slender triangular segments. Capsule small, dark, 0.3 X 0.18 mm oblong 

 in outline. Seta in transverse sections of 4 rows of inner cells surrounded by 8 rows 

 of outer cells of similar size. [Spruce, 1885.] 



PI. 85. Fig. 1, a-g. 



Habitat: On soil in woods. 



BRAZIL: S. Carlos et Catanacunami, Spruce, Hep. Sprue, (isotype NY). 



odontoschism ace ae K. Miiller in Rabenhorst, Krypt. Fl. Erganzungsband. 



6 2 : 184. 1939. 



Cephaloziaceae subfam. Odontoschismoideae Buch, Suomen Maksammalet 21. 1934. 

 Cephaloziaceae auct. p.p. 



Sporeling of the Nardia type, i.e., the protonema a mass (often cylindrical) of 

 cells formed outside the exospore. Leafy stems often from stolon-like flagelliform 

 branches, irregularly branched, the branches lateral of the Frullania type, or more 

 characteristically, ventral-intercalary (in Anomoclada also dorsilateral intercalary), 

 leafy or flagelliform stolon-like or short sexual. Rhizoids from the ventral side of 

 the stem. Leaves succubous, ovate, orbicular or subrectangular, or in Cladopodiella, 

 divided to the middle into 2 oblong segments. Underleaves small, often of only 

 a few cells. Male inflorescence usually ventral-intercalary, more rarely terminal 

 becoming intercalary on the stem, both bracts and bracteoles present; antheridia in 

 the axils of the bracts. Female inflorescence terminal on the stem or on a short 

 ventral sexual branch, the bracts and bracteoles in 3 or 4 series, the inner series 

 largest, bifid. Perianth cylindrical below, 3-keeled above. 



Type genus: Odontoschisma Dumortier, 1835. 



Key to the Genera 



1. Leaves divided to one-half, the 2 segments oblong with broad rounded tips; plants very 



small, light green, fragile. Cladopodiella. 

 1. Leaves undivided; plants small to large, whitish, green, brown or reddish to purple. 

 2. Plants small, delicate, whitish or tinged with red; leaves of about SO cells or less, 



ovate with blunt apices. Alobiellopsis. 

 2. Plants small or large, coarse, whitish, green, brown or tinged with red; leaves broadly 

 rounded, ovate, oblong or rectangular. 



3. Leaves with crisped-undulate margins; leaf cells very large with knot-like tri- 

 gones; branches often dorsilateral, intercalary. Anomoclada. 



3. Leaf margins never crisped-undulate; leaf cells large or small, the trigones tiny to 



large and knot-like. Odontoschisma. 



Odontoschisma Dumortier, Recueil Obs. Jungerm. 19. 1835. 



Pleuroschisma sect. Odontoschisma Dumortier, Syll. Jungerm. 68. 1831. 

 Sphagnoecetis Nees in G. L. & N. Syn. Hep. 148. 1845. 

 Cephalozia subg. Odontoschisma Spruce, On Cephalozia 59. 1882. 



Plant, delicate to large and coarse, whitish, light to dark green, yellow-brown or 

 red to purple, caespitose or among other bryophytes. Stems prostrate, sometimes 

 becoming flagelliform, or erect radial, small-leaved, gemmiparous; branches ventral- 

 intercalary, leafy, flagelliform (stolon-like) or short sexual; stem in transverse section 



