286 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



of underleaves. Line of leaf insertion oblique, nearly longitudinal. Leaves approxi- 

 mate to subimbricate, bordered, widely spreading, tending to be ascendant, plane, 

 often becoming decurved in the outer part, more or less rectangular, 1.3 X 0.6-0.95 

 mm, the apex broad-rounded, the dorsal base curved, the ventral base decurrent, the 

 margin entire; leaf border of 1 or 2 rows of long-rectangular cells 30-45 X 15-20 //, 

 elongate at a right angle to the leaf margin, the walls thickened; cells of the upper 

 part of the leaf mostly 30-40 X 20-25 /x, the walls uniformly thickened, without 

 trigones, the cuticle verrucose, becoming striolate in the lower part of the leaf. 

 Underleaves broadly ovate, twice as broad as the stem at the base, tapering to a 

 blunt, rounded, often refuse apex, the margin straight or crenulate from projecting 

 cell angles, the cells thin-walled. Plants dioicous. Female inflorescence with 2-5 

 series of short bracts and bracteoles. Male inflorescence, perigynium and sporo- 

 phyte not seen. 



PI. 67. Fig. 5, a-d. 



Habitat: In mats on trees and rocks or hanging from twigs, in montane forests. 



COLOMBIA: Meta: Cordillera La Macarena, quebrada Tirana=, 1700 m, Schultes & Bell 

 11638 (FH) ; near Buenaventura, Valle de Cauca, 600 m, Bischler 443A (G) ; Norte de Santander: 

 near Las Mercedes, 1000 m, Bischler 2573, 2591 A, 2669B (G). 



VENEZUELA: Amazonas: Cerro Huachamacari, 1200 m, Rio Cunucunuma, Maguire, Cowan 

 & Wurdack 29924 p.p. (NY). 



BRAZIL: ad flumen Uaupes prope Panure, Spruce (MANCH). 



ECUADOR: Andes Quitenses: Canelos, 1000 m, Spruce, Hep. Sprue, (type MANCH, iso- 

 types BM, G, NY, Y) ; Rio Pastaza, Steyermark 54860 p.p. (F). 



6. Calypogeia crenulata Bischler, Candollea 18: 35. /. 9. 1962. 



Masligobryum cellulosum var. /3. Lindenberg in G. L. & N. Syn. Hep. 217. 1845. 



Plants of medium to large size, olive-green to dark brown, in depressed mats 

 or scattered among other bryophytes; stems 3-5 cm long, with leaves, 1.5-2 mm 

 wide, sparingly irregularly branched; branches leafy, ventral-intercalary, single or 

 in pairs from the axils of the underleaves; stem in transverse section with a brown 

 unistratose layer of thick-walled cells surrounding the medulla of many cells with 

 thinner brown to hyaline walls. Rhizoids abundant, in tufts from small basal cells 

 of some underleaves, long, brownish, branched at the tips. Leaf insertion slightly 

 oblique, nearly longitudinal. Leaves approximate to subimbricate, bordered, rec- 

 tangular, widely spreading, straight or ascendant, plane or decurved in the outer 

 part, 0.6-0.85 X 0.3-0.5 mm, the dorsal base curved, the ventral base decurrent, 

 the apex broad, rounded, the margin crenulate; leaf border of 1 (more rarely of 2) 

 row of quadrate cells 20-25 X 20-25 fi occasional cells, to 60 X 20 ju, the walls 

 uniformly thickened; cells of the apical region 25-39 X 25 /x long and broad, the 

 walls thin or uniformly thickened, the trigones small to conspicuous, the cuticle 

 papillose-warty. Underleaves orbicular to truncate-ovate from a broad base, twice 

 as wide as the stem, scarcely tapering above, the rounded apex often retuse, the 

 cells elongate, thick-walled, the margins crenulate. Plants dioicous. Male inflores- 

 cence short, bud-like, delicate, the bracts and bracteoles in 3 or 4 series, the bracts 

 similar to the underleaves, smaller; antheridia not seen. Female inflorescence very 

 short, the bracts and bracteoles in 3 or 4 series, scale-like, remaining at the mouth 

 of the perigynium. Pendant perigynium club-shaped, to 2.5 mm long, 0.8 mm broad. 

 Sporophyte not seen. 



PI. 67. Fig. 6, a-d. 

 Habitat: On trees, rocks and decaying logs in montane forests. 



