60 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



I VOL. 11 



Rhizoids not seen. Line of leaf insertion transverse. Leaves distanct, erect- 

 spreading, rectangular, quadrate or cuneate, the lateral margins entire or occa- 

 sionally with a weak tooth, quadrifid (occasional leaves trifid) to one-half or 

 three-fourths of their length; segments six to eight cells long, uniseriate from 

 a 2- or 3-celled base, straight, spreading, the cells 36-50 X 18 /*, the tip cells 

 longest, the cuticle coarsely striate; lamina two to four rows of cells high, the 

 cells n.ostly 36 X 18/*, the walls uniformly thickened, the cuticle coarsely 

 striate. Uaderleaves like the leaves or occasionally slightly smaller. Plants dioi- 

 cous. Male inflorescence terminal, the bracts and bracteoles in few pairs, the 

 bracts similar to the leaves but the lamina more rows of cells high, the margin 

 1- or 2-toothed; antheridia solitary in the axils of the bracts. Female inflores- 

 cence terminal, with one innovation, the bracts and bracteoles similar, more 

 elaborate than the leaves, larger, the outermost series with a long tooth on each 

 side of the lamina, the innermost series with triangular segments, with one or 

 more cilia, singly or in opposite pairs near the base (as in the preceding species), 

 the margins of the lamina dentate and ciliate; archegonia 10 to 15. Perianth 

 (immature) mouth ciliate, the cilia two to four cells long. Sporophyte not seen. 

 Fig. 5, a-j. 



Habitat: On soil among other bryophytes. 



PATAGONIA — TIERRA DEL FUEGO: Chaihuin-Colun, Alerzal, 500 m, G. H. Schwabe 

 26 p.p ( S ) (type Hb. Herzog) ; Gulf of Pefias, Challenger Exp., without collector's name 



(NY). 



The species is the most simplified member of the genus in America and 

 represents the end line in a reduction series from T. quadrifidum possibly 

 through T. mbintegrum. The vegetative plants of the three are so different 

 from one another that they scarcely suggest a close relationship. However, the 

 patterns of the female bracts and bracteoles are identical in two and quite 

 similar but reduced in T. pungcns. 



References 



Schuster, R. M. 1959. Studies on Hepaticae. I. Temnoma. Bryologist 62: 233-242. (1960). 



■ — . 1960. Notes on Nearctic Hepaticae. XIX. The relationships of Blepharostoma, 



Temnom-a and Lepicolea with descriptions of Lophochaete and Chandonanthis subg. Tetra- 

 Jophozia subg. n. Jour. Hattori Bot, Lab. 23: 192-210. /. 1, 2. 1961. 



Fig. 5. Temnoma punffens. 5 a. Stem, dorsal view, X 33. 5 b. Leaf segment, X 350. 

 5 c. Underleaf, X 33. 5 d. Portion of a transverse section of a stem, X 350. 5 e. Female 

 bract of the outer series, X 33. 5 f. Female bract of the intermediate series, X 33. 5 g. 

 Female bract of the innermost series, X 33. 5 h. Portion of the perianth mouth (imma- 

 ture), X 165. 5 j. Male bract, X 33. 



Fig. 5 j after Herzog, 1960. 



Fig. 1. Chaetocolea palmata. 1 a. Portion of a stem, dorsal view, X 50. 1 b. Juvenile 

 stem, X 160. 1 c. Tip of a segment, X 350. 1 d. Cells of the lamina of the leaf, X 350 

 1 e. Transverse section of a slender stem, X 350. 1 f. Female bract, X 65. 1 g. Female 

 bract of an inner series, X 65. 1 h. Innermost female bract and stem structure surround- 

 ing the archegonia, X 65. 1 j. Underleaf, X 50. 



Figs. 1 a, f, g, h, j after Spruce, 1885. 



