88 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



PATAGONIA— TIERRA DEL FUEGO: Aysen Valley, Dosfn 1000 (G); s.l. without 

 collector's name, type of I. appendiculata (G) ; s.l., Busen 292 (as /. appendiculata (isotype ? 

 EH); Magellan Straits: Hooker, Hb. Kew "sub nomine J. tcnacifoliam," type of Herberta 

 dura (K) ; Chile, Neger (as M. antarctica (G) ; s.l., Busen 224 (as M. antarctica f. compacta) 

 (G); Fuegia, Busen 243, 276 (G) ; Patagonia, Busen 257, 293 (G) ; Desolation I., Puerto 

 Angosta, Busen 271 (G). 



The additional reports in the literature include Herzog & Schwabe (1939), Kiihnemann 

 (1949), Reimers (1926), and Stephani (1900 a, b, 1901a, 1903a). 



3. Triandrophyllum georgiense (Stephani) Fulford & Hatcher, Bryologist 



64: 348. 1961 [1962]. 



Isotachis georgiensis Stephani, Schwed. Siidpolar Exped. 1901-03 4 1 : 4. /. 4. 1905. 

 Herpocladium antarcticum Stephani, Sv. Vet.-akad. Handl. 46»: 66. /. 25 a. 1911. 



Plants small, brown, tending to be erect, radially symmetric, scattered 

 among other bryophytes ; stems slender, to 2 cm long, with leaves to 1 mm wide, 

 simple; stem in transverse section 8-10 cells in diameter, cells of the unistratose 

 cortical layer smaller and with thicker walls than those of the medula. Line of 

 leaf insertion oblique, only slightly decurved at the dorsal end, with the leaves 

 ineubous. Rhizoids not seen. Leaves distant, patent, subsymmetric, ovate to 

 ovate-truncate, concave, to 0.9 mm long, to 0.7 mm wide, the margins entire, 

 usually with a srrall appendage at the dorsal base, occasionally with one or two 

 very small teeth on the lower margins, bifid to one-half of their length; seg- 

 ments triangular from a broad base, acute, the sinus broad; leaf-cells at the 

 base of the segment 24-27 X 22-24 p., the walls uniformly thickened, the tri- 

 gones very small or indistinct, the cuticle verruculose to striolate. Underleaves 

 similar to the leaves, scarcely smaller. Male and female inflorescences and sporo- 

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



Habitat : On the bank of a brook. 



SOUTH GEORGIA: Cumberland Bay, Skottsberg 186 (type G-1785) ; Cumberland Bay, 

 Skottsberg, type of Herpocladium antarcticum (G). 



4. Triandrophyllum fernandeziense (S. Arnell) firblle. Bryologist 64: 25. 



/. 4, a-h. 1961. 



Acromastigum fernandeziense S. Arnell, Ark. Bot. II. 4: 10. /. 1 a-d. 1957. 



Plants of small to medium size, olive-green becoming light brown, in cushions 



Fig. 1. Triandrophyllum subtrifidum. 1 a. Leafy stem with a perianth, long seta and 

 opened capsule, dorsal view, X 10. 1 b. Leaf cells, X 180. 1 c. Dingram to show leaf 

 insertion on the stem, dorsal view. 1 d. Diagram to show leaf insertion on the stem, ventral 

 view. 1 e. Portion of a transverse section of a stem, X 180. 1 f. Diagram of a transverse 

 section through a male inflorescence, X 30. 1 g. Portion of a traiisverse section of the 

 capsule wall, X 350; the large cells are of the outermost layer. 



Fig. 2. T. trifidum. 2 a. Portion of a stem, ventral view, X 10. 2 h. Leaf, X 18 

 (type). 2 c. Portion of a stem with trifid leaves and underleaves, X 18. 2 d. Portion of a 

 transverse section of a stem, X 180. 2 e. Female bract of the inner series, X 18. 2 f. 

 Perianth [immature] with serrate to ciliate segments, X 25. 



Fig. 3. T. georgiense. 3 a. Stem, dorsal view, X 10. 3 b. Leaves, X 10. 3 c. Cells 

 of the median portion of a leaf, X 180. 3 d. Underleaves, X 10. 3 e. Portion of a 

 transverse section of a stem, X 80. 



Fig. 4. T. fernandeziense. 4 a. Stem, ventral view, X 30. 4 I), Stem, dorsal view, 

 X 33. 4 c. Leaf, X 90. 4 d. Leaf cells, X 340. 4 e. Underleaf, X 90. 4 f. -Portion 

 of a transverse section of a stem, X 350. 



Fig. 1 a-g, 2 c-e, and 3 a-e after Fulford & Hatcher, 1958; 4 n. after Arnell, 1957. 



