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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



and underleaves, larger, in several series, the inner series often shortly bidentate 

 at the tips. Perianth 3-keeled, distinctly 3-lobed above, the margin of each 

 broad lobe undulate, often with obscure teeth, the tip often shortly bifid. Sporo- 

 phyte not seen. Fig. 3, a-e. 



Habitat : On soil. 



PATAGONIA— TIERRA DEL FUEGO: Rio Azopardo, 600 m, Duain (G; SPA); 

 n of Cerro Tronador, 1400-1700 m, Schiller (Hb. Herzog) ; Rio Azopardo, 720 in, Halle # 

 Shottsberg (UPS) ; Vulcan Calbuco, 1000 m, Schiller (Hb. Herzog) ; Cerro Tesoro Massiv, 

 1000 m, G. H. Schivabe (Hb. Herzog); Staten I.: Port Cook, Skottsberg (SPA). 



FALKLAND ISLANDS: Mt. Adams, 700 m, Halle # Slcottsberg, type of H. minimum 

 (type G, isotype SPA). 



TRISTAN DA CUNHA : The Peak, 2000 m, Christophcrson # Mejland (S-PA). 



[The above list of stations is taken from Herzog & Grolle, 1958.] 



The species has also been reported (under various synonyms) from the area in the fol- 

 lowing literature: Gola (1923), Herzog (1954), Kiihnemann (1949), Massalongo (1885, 

 1927), and Stephani (1901a, 1911). 



4. Pachyglossa fissa (Mitten) Grolle, Revue Bryol. Lichenol. 28: 346. f. a-n. 

 1959. 



Herpocladium fissum Mitten, Jour. Linn. Soe. Bot. 15: 69. 1877. 



Plants small, reddish-brown, tending to be radially symmetric, among other 

 bryophytes; stems rigid, to 2 cm long, sparingly branched, the branches in the 

 axils of the leaves and underleaves; stems in transverse section with a cortical 

 band of one or two layers of cells, smaller, with thicker walls than the cells of 

 the medulla. Rhizoids on the scale-like leaves of the flagelliform branches. Line 

 of leaf insertion transverse or slightly convex, the ends decurved on both sides. 

 Leaves spreading, obovate from a narrow base, 0.4-0.5 mm long, bifid to one- 

 sixth of their length or less, the segments straight, the sinus narrow, the 

 margins entire, sometimes with an obscure tooth near the apex, pluristratose, 

 the apex and margins of two layers of cells, the rest of the leaf of three or more 

 layers, the lamina with scattered superficial cilia of one to four cells, near the 

 dorsal base; cells in surface view 15-20 X 15-25 /x, the walls uniformly thick- 

 ened, the trigones small, distinct, the cuticle striolate. Underleaves similar to 

 the leaves, slightly smaller, acute to obtuse. Plants dioicous. Male inflorescence 

 terminal becoming intercalary on the stem or branch, the bracts and bracteoles 

 in few series, like the leaves and underleaves, larger, bifid above, the lateral tooth 

 more conspicuous ; antheridia in pairs in the axils of the bracts. Female inflor- 

 escence terminal, with subfloral innovations, the bracts and bracteoles in two 

 series, like the leaves and underleaves, larger. Perianth cylindric, contracted 

 and 4-5 plicate above, the mouth with obscure lobes (?), the margin ciliate- 

 dentate. Fig. 4, a-e. 



Habitat : On soil among other bryophytes. 



PATAGONIA— TIERRA DEL FUEGO: Desolation I., 600 m, Dusen (S-PA) ; Cerro 

 Tesoro Massiv, 1200 m, G Schwabe 38d (Hb. Herzog) ; Rio Azopardo, 700 m, Halle 4' Shotts- 

 berg (S-PA). 



KERGUELEN I: B.I., Moseley, Challenger Exped., (type NY), Moseley (NY). 



References 



Herzog, T. 1950. Pachyglossa. In W. Martin, The Bryophytes of Stewart Island II. Trans. 



Roy. Soc. N. Zeal. 78: 4. 

 Herzog, T. 1952 Drei neue Lebermoose aus "Westpatagonien. Revue Bryol. Lichenol. 21: 



256-261. /. 1-3. 



