46 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



4. Trichocolea robusta Stephani, Spec. Hep.4: 58. 1909. 



Plants large, in pale yellowish-green tufts; stems coarse, 5-8 cm long, with 

 leaves to 3 mm wide, irregularly pinnate to bipinnate, the branches to 1 cm 

 long; stems in transverse section to 15 cells across, the cortical band of one or 

 two layers of smaller cells; stem paraphyllia scattered and in clusters, five to 

 eight cells long, rarely branched, uniseriate. Line of leaf insertion oblique, the 

 leaves suceubous. Leaves distant to approximate, spreading, more or less sym- 

 metric, to 1.5 mm long, 2.8 mm wide, divided to one-half of their length into 

 six to eight unequal, branched segments; segments with the divisions opposite 

 or whorled, densely ciliate, the cilia simple or branched, the cells averaging 

 83 X 12 the cuticle striolate-papillose ; lamina to seven cells high, the cells 

 averaging 80 X 36 fi. Underleaves smaller, symmetric, to 1.0 mm long, 1 mm 

 wide, deeply bifid, the halves again divided, the four to six segments and cilia 

 as in the leaves. Branch leaves and underleaves similar but smaller and with 

 fewer segments than those of the stem. Male and female inflorescenses and 

 sporophyte not seen. Fig. 4, a-d. 



Habitat : On bark. 



COLOMBIA: Prov. Antioquia: Paramo de Sons6n, Jack, (type G). There is a report of 



the species from Mexico (Davis [Pringle], 1936). 



5. Trichocolea paraphyllina (Spruce) Stephani, Spec. Hep. 4: 58. 1909. 



Leiomitra paraphyllina Spruce, Trans. Proc. Bot. Soc. Edinb. 15: 350. 1885. 

 Trichocolea difficilis Stephani, Bibliot. Bot. 87: 230. 1916. 



Plants large, in pale yellowish-green tufts ; stems coarse, 6-8 cm long, with 

 leaves to 2 mm wide, irregularly pinnate to bipinnate, the primary branches to 



1 cm long; stems in transverse section 16-20 cells across, the cortical band of 

 one or two layers of smaller cells ; stem paraphyllia usually numerous except on 

 the ventral side, five to eight cells long, rarely branched, uniseriate. Rhizoids in 

 tufts from the lamina of the underleaf, the expanded tips often fused to form a 

 disc-shaped plate. Line of leaf insertion oblique, the leaves suceubous. Leaves 

 distant to approximate, spreading, asymmetric, to 1.5 mm long, 2.5 mm wide, 

 divided to one-half of their length into four to six unequal, often branched, 

 segments; segments narrowly triangular, branched, sparingly ciliate, the cilia 

 long, simple or branched, the cells long, the cuticle striolate-papillose ; lamina 

 six to eight cells high, the cells averaging 115 X 32 Underleaves less than 

 half as wide as the leaves, to 1.5 mm long, 1.0 mm wide, divided to three-fourths 

 of their length into five or six unequal, often branched segments, the cilia similar 

 to those of the leaf. Branch leaves and underleaves similar to those of the stem 

 but smaller and with fewer segments. Male inflorescence not seen. Female in- 

 florescence terminal on a stem or branch, with one or two subfloral innovations, 

 the bracts and bracteoles in three series, symmetric, the bracts to 2 mm long, 



2 mm wide, divided to two-thirds of their length into five to seven unequal 



Fig. 4. Trichocolea robusta. 4 a. Stem leaf, X 55. 4 b. Stem showing leaf insertion 

 and paraphyllia, dorsal view, X 12. 4 e. Portion of one of the cilia of a leaf, X235. 4 d. 

 Stem underleaf, X 55. 



Fig. 5 T. paraphyllina. 5 a. Stem leaf, X 40. 5 b. Stem showing leaf insertion and para- 

 phyllia, dorsal view, X 15. 5 c. Portion of one of the cilia of a leaf, X 235. 5 d. Under- 

 leaf, X 40. 5 e. Female bract, X 20. 5 f . Elater, X 235. 5 g. Spores, X 235. 



Fio. 6. T. elegans. 6 a. Stem leaf, X 55. 6 b. Stem to show leaf insertion, X 10. 6 c. 

 Portion of one of the cilia of a leaf, X 235. 6 d. Cells from the lamina of a leaf, X 235. 6 e. 

 Underleaf, X 55. 



Drawn from Hatcher, 1957. 



