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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



COLOMBIA: Amazonas— Vaupes: Rio Apaporis, 250 m, Schultes & Cabrera 11975 $ 

 12345 (FH); mouth of Rio Pacoa, Schultes & Cabrera 12642 (FH) ; Soratama, 250 m, 

 Schultes & Cabrera 15130, 15144 (FH) ; Raudal Yayacopi, 250 m, Schultes & Cabrera 15437 <5 

 (FH) ; Jinogoje, 200 m, Schultes & Cabrera 16586 (FH) ; Amazonas: Rio Miritiparana, 

 Cafio Guacaya, 200 m, Schultes & Cabrera 15790 ?, 16546, 16547, 16550 ?, 16555 p.p. (FH) ; Rio 

 Caqueta, La Pedrera, Schultes & Cabrera 17811 ?, 17818 (FH); Vaupes: Rio Kananari, 

 Caohivera Palito, 250 m, Schultes & Cabrera 13114 9, 13196 (FH) ; Rio Kuduyari, Cerro 

 Yapoboda, 450 m, Schultes & Cabrera 14185 <$ (FH) ; Rio Paca, Wacaricuara, 195 m, Schultes 

 & Cabrera 19508 (FH) ; Rio Papury, Teresita, Schultes & Cabrera 19456 ?, 19459 p.p., 19462 

 (FH); Rio Vaupes, Cerro de Mitfi, 250 m, Schultes & Cabrera 13859 $, 13876 ? (FH). 



VENEZUELA: Amazonas: Rio Orinoco, Cerro Yapacana, Cumbre, 1200 m, Maguire, 

 Cowan & Wurdack 30700 (NY) ; near Culebra, 200 m, Maguire, Cowan & Wurdack 30418 

 (NY); Rio Negro, near Piedra Cucuy, 100 m, Maguire & Wurdack 34936 (NY). Estado 

 Bolivar: Cerro Duida, Cano Negro, 200-260 m, Sleyermark 57825a, 58096 (F) S. Carlos, 

 Spruce 37 (NY); Sierra Ichun, 625-725 m, Sleyermark 90209 (VEN), same locality, 500 m, 

 Sleyermark 90388 (VEN). 



BRAZIL: Rio Amazon, as //. pterygophyllum, Hb Nees (STR), the same, (BR); Rio 

 Negro, (Taruma et Cocui) Spruce, Hep. Sprue, as M. leiophyllum var. (BR, NY, US, Y) ; 

 Caripi et Tanau prope Pani, Spruce, Hep. Sprue, (isotype BR, NY, US, Y) ; S. Gabriel, 

 Spruce, Hep. Sprue. (US); in Caatinga, Spruce (NY); Rio Negro, Sjnuce (NY, US); Rio 

 Negro, S. Felippe, Lutzelburg, 22360, 22386 (Hb Herzog) ; Prov. Amazonas, Traill (NY); 

 Tanau, Spruce (NY) ; Rio de Janeiro, Glaziou 9260 (NY) ; Rio Negro, Caatinga do Ticundari, 

 Sioli 13, 15 (Hb Herzog), Rio Papori, Trinidade, Lutzelburg 23010 b (Hb Herzog); Rio 

 Uaupes, Jutica, Campos, Lutzelburg, s.n. (Hb Herzog) ; Rio Uaupes, Jutica, Varadouro, 

 Lutzelburg 23749 (Hb Herzog); "flumen Amazonas," Hb. Nees, as Herpetium pterygophyllum 

 a (STR) ; "Brasilia," Hb. Nees, as Herpetium pterygophyllum (STR) ; "Flumen Amazonium," 

 Martius (type, M) ; without locality, Martius, with M. pterygophyllum (M) ; Rio de Janeiro: 

 (leg. Martius or Sellowf, fide Reimers), with M. pterygophyllum (M). 



PERU: Campana, Spruce (NY). 



BOLIVIA: S. Carlos bei Mapiri, 850 m, Buchtien 275 p.p. (Hb Herzog). 

 The species has also been reported from Brazil by Ule (Stephani, 1905) and from 

 Bolivia by Muller (1955). 



9. Micropterygium pterygophyllum (Nees) Trevisan, Mem. 1st. Lomb. III. 

 4: 413. 1877; emend. Reimers, Hedwigia 73 : 174. /. 12, 13, 15 4-6. 1933. 

 Not. M. pterygophyllum (Martius) Spruce, 1885. 



Jungermannia pterygophyllum Nees p.p. in Martius, Fl. Brasil. 1(1): 377. 1833; p.p. in 

 Martius, Icon, plant, brasil. p. 34. 1828-1834. [Quoad t. 19]. 



Micropterygium vulgare Nees, Lindenberg & Gottsche var. a p.p., in G. L. & N. Syn. Hep. 

 234. 1844. [as synonym.] 



Micropterygium parvistipulum var. lancijolium Spruce p.p., Hep. Sprue. 



Micropterygium martianurn Stephani, Hedwigia 27: 295. 1888. [as synonym.] 



Micropterygium pterygophyllum var. gracile Reimers, Hedwigia 73: 176. /. 13. 1933. 



Micropterygium pterygophyllum var. lancijolium (Spruce) Reimers, Hedwigia 73: 176. 

 {.15, 4-6. 1933. 



Micropterygium pterygophyllum var. robustum Reimers, Hedwigia 73: 175. 1933. 



Leafy stems of medium to large size, pale yellowish-green to brownish, 

 complanate, ascendent from a branched rhizome, in tufts or mats; stems to 

 1.5-2 cm long, with leaves to 1.2 mm broad, simple or occasionally branched, 

 sometimes becoming flagelliform at the tips, ventral flagelliform branches occa- 

 sional. Rhizoids often brown, long with branched tips, in tufts on the scale-leaves 

 of the rhizome and the flagelliform branches. Leaves spreading, subimbricate, 

 complicate, to 0.5 mm long, flattened, the keel distinct, the wing large, four to 

 six rows of cells high, extending to near the base of the leaf, the dorsal lobe 

 somewhat larger than the ventral, the apex usually acute, the margins of the 

 leaf and wing obscurely serrate and with few to many larger teeth; leaf cells of 

 the upper part quadrate, 15-20 p. across, cells of the wing adjacent to the keel 



