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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



thin-walled, the trigones small or absent, the cuticle coarsely verruculose. Under- 

 leaves broader than the stem, broadly ovate to suborbicular, the apex rounded to 

 blunt-pointed or shortly bifid, bordered by long cells as in the leaf, the lamina of 

 shorter, thin-walled cells of similar texture. Plants dioicous. Male inflorescence on 

 a short sexual branch, bud-like, single or rarely two or three in the axil of an 

 underleaf, the male bracts and bracteoles in 4 or 5 series, the bracts small, bifid, 

 concave. Antheridia one to three in the axil of a bract. Female inflorescence and 

 sporophyte not seen. 



PI. 66. Fig. 1, a-c. 



Habitat: in mats on bark of trees. 



COSTA RICA: Cartago: Orosi, 1000 m, Standley 39843 (type Hb Herzog). 



2. Calypogeia cellulosa (Sprengel) Stephani, Spec. Hep. 3: 398. 1908. 



Jungermannia cellulosa Sprengel, Syst. Veg. 4: 232. 1827. 

 Mastigobryum cellulosum Lindenberg in G. L. & N. Syn. Hep. 217. 184S. 

 Kantia cellulosa (Sprengel) Spruce, Trans. Proc. Bot. Soc. Edinb. 15: 412. 188S. 

 Jungermannia cellularis Sprengel, in Hb. 



Plants of small to medium size, olive-green becoming yellowish, in depressed 

 mats or among other bryophytes; stems to 2 cm or more long, with leaves, to 1.5 

 mm wide, irregularly branched; branches ventral-intercalary, one or two from the 

 axil of an underleaf, leafy or more rarely flagelliform or short sexual. Rhizoids 

 occasional, long, bulbous or branched at the tips, often brownish, in tufts from small 

 cells on the base of an underleaf. Line of leaf insertion slightly oblique, nearly 

 longitudinal. Leaves approximate to imbricate, bordered, widely spreading, tending 

 to be slightly falcate, plane or becoming decurved in the outer part, more or less 

 rectangular in outline, 0.6-0.7 X 0.4-0.5 mm, the dorsal base scarcely curved, the 

 ventral base long decurrent, the apex broad, truncate-rounded, the margin deeply 

 crenulate; leaf border a row of cells elongate at a right angle to the margin, the 

 cells to 40 X 15-20 fi; cells of the apical region 30-45 X 25-33 fx, the walls uniformly 

 thickened, the trigones tiny or absent, the cuticle papillose. Underleaves orbicular, 

 often twice as wide as the stem, undivided to retuse, the cells large, the margin 

 entire or crenulate. Plants dioicous. Female inflorescence solitary or in pairs, the 

 bracts and bracteoles in 3 or 4 series, small; archegonia five to ten. Perigynium, 

 sporophyte and male inflorescence not seen. 



PI. 66. Fig. 2, a-e. 



Habitat: In mats or among other bryophytes, on trees and decayed logs in 

 forests. 



CUBA: Oriente: Sierra Maestra, 1100-1400 m, Ekman (S-PA) 



PUERTO RICO: Pico del Oeste, 1020 m, Fulford, Crandall, Stotler 406 p.p. (Hb Fulford). 

 WEST INDIES: si, Perrin (NY, PHILA). 



GUADELOUPE: without data (NY, S-PA); si Perrin (lectotype G-1844; BM, NY, 

 S-PA) ; ex Hb Hooker (NY) ; si, Parker (NY) ; si, as J. cellularis (S-PA). 



DOMINICA: Caulisbon, 3700 ft, Elliott 1901 (BM) ; Morne Micotrin, 3000-3800 ft, Elliott 

 (BM) ; Morne Trois Pitons, Elliott 2276, 2290 8 (BM, G), 2294B (BM). 



3. Calypogeia retusa Bischler, Candollea 18: 33. /. 8. 1962. 



Plants of medium size, yellowish-green becoming brownish, in mats or among 

 other bryophytes; stems creeping, slender, to 5 cm long, with leaves, to 1.7 mm 

 wide; branches frequent, leafy or flagelliform, ventral, axillary-intercalary; stem in 

 transverse section of thin-walled cells. Rhizoids abundant, long, in hyaline tufts 



