138 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



GUATEMALA: Pitoreal, Sharp 2772 (TENN) ; Alta Verapaz, Standley 90648 (F). 



COLOMBIA: S. Merida: Sierra Nevada, Moritz, type of M. consanguineum (FH); Dep. 

 Norte de Santander, Sarara, Cwlrecasas, Schulte # Smith 12448cc, dd, E, L, N, 0. (US) ; 

 s.l., Irmscher 29, type of M. colombicum (G) ; s.l., Schlim (as M. scutigerum) (G). 



VENEZUELA : Caracas: Merida, 4500 ft, Funck 4- Schlim 350 bis (as M. scutigerum) 

 (G) ; Cura, Alston 6164 (BM) ; Cumbre, Cowan # Wurdach 31326 (NY) ; Valencia, Fendler 

 (as M. scutigerum) (G) ; s.l., Fendler 30 (G). 



BRITISH GUIANA: Roraima, McConncll & Quelch 512 p.p. (as M. deciduum f. etio- 

 latum) (G). 



BRAZIL: Apiahy, Puiggari 108, 648, 759a, 764, 781a, 882, 1115, Y (as M. scutigerum) 

 (G) ; Puiggari 276a, 782c (as M. cuervi) (G) ; Serra do Mar, Dusen, type of M. puiggarii 

 (FH) ; Carac.a, Wainio (as M. scutigerum) (G) ; Rio de Janeiro, Schifner 2275 (W) ; Glaziou 

 7227b (as M. scutigerum); Parana, Dusen 1886, 3899, 3916 (G) ; S. Paulo: Campo Grande, 

 Schiffner 458, 460, 461, 462, 463 p.p., 466 p.p., 468, 469, 470, 479 (W) ; Barra Mansa, Schiffner 

 502, 1565, 1873, (W) ; Alto da Serra, Schiffner 1691 (W). 



K<UADOR: Mt. Tuiguarahua, Spruce, Hep. Sprue., typo of B. teretiuscula Spruce (iso- 

 types FH, NY) ; Spruce, Hep. Sprue, type of B. decidua (isotype NY). 



PERU: Mt. Campana, Spruce (G), Spruce, type of B. longistipula var. polymastix (iso- 

 type NY). 



BOLIVIA: Yungas, Jay (YU). 



23. Bazzania tricrenata (Wahlenberg) Trevisan Mem. 1st. Lomb. 13: 414. 1877. 



J ungermannia tricrenata Wahlenberg, Fl. Carpat. 364. 1814. 



[The long synonymy for this species is given in works on Hepaticae of North America 

 or of Europe. 1 



Plants filiform to medium size, olive-green, more or less pigmented with dark 

 brown, often becoming reddish ; stems slender, 2-8 cm long, with leaves to 2 mm 

 wide, prostrate to ascending ; branches 1 cm or more apart, diverging at an acute 

 angle ; flagelliform branches numerous, long. Line of insertion curved in the 

 upper half. Leaves distant to imbricate, spreading to ascendent or curved 

 around the stem, persistent, asymmetric, ovate-triangular, to 1 mm long, to 

 0.6 mm broad at the base, narrowing to the acute or obliquely truncate, 3-toothed 

 (sometimes 2-toothed) apex, the acroscopic tooth longest; teeth two to six cells 

 long, one or two to five cells broad at the base ; leaf-cells thin-walled, the trigones 

 small, the lumina rounded, the cuticle smooth to slightly verrueulose; cells of 

 the apical portion 20-26 X 22 p.. Underleaves distant to approximate, squarrose, 

 broadly quadrate-orbicular, as wide as or wider than the stem, to 0.35 mm long, 

 0.45 mm wide, the apex usually undulate to four-lobed, the lateral margins un- 

 divided to occasionally irregularly lobed or toothed. Male and female branches 

 and sporophytes not seen on the Central American material. Fig. 23, a-c. 



Habitat : In mats on soil banks ; also on soil, rocks, logs and tree trunks in 

 woods in the northern hemisphere. 



North America, Europe, Asia. 



GUATEMALA : Chimaltenango : Cerro above Tecpiin, 9300 ft, Sharp 2582 (TENN). 



The species is to be found in North America, from northern California north- 

 ward to southern Alaska, and from northeastern Canada, south to North Caro- 

 lina and west to eastern Kentucky and Tennessee. 



This is the first record for this species south of the United States, and the 

 first record for any northern species of Bazzania in Latin America. It becomes 

 another in the list of examples of plants that has a discontinuous distribution 

 that includes eastern (and western) North America and the Highlands of Mex- 

 ico-Quatemala. 



