( 16 ) 478 



avi and Yungas, duplicates of which are in our collection, sent 

 by Mr. C. H. Wright with the permission of the Director. 



Grimmia (Racomitrum) DiMORPHUM C. MuUer, n. sp. Unduavi, 



loooo ft., Oct., 1885 (31 18). 



Plants in dark dirty mats, stems blackened beneath, decum- 

 bent, giving off lower branches 3-4 cm. long, branchlets short, 

 fasciculate ; leaves subsecund, incurved and twisted when dry, 

 spreading when moist, carinate, plicate with one strongly involute 

 margin, generally blunt apex, but occasionally with a white mu- 

 cronate tip or the apical ones with white crisped tips, vein promi- 

 nently keeled, ending below the blunt apex or continuous into the 

 white prolongation ; cells all uniformly sinuous, elongated with 

 faint transverse walls; perichetium short, 3 mm. long, broadly 

 convolute, sheathing; bracts broad, apex acute, cells scarcely sin- 

 uous. Pedicels short, less than i cm., long, arcuate, twisted ; 

 capsule erect, or bent, 3 mm. long, smooth except just below 

 the small dark bordered mouth ; lid i mm. long, conic beaked, 

 teeth long, slender, papillose, yellow. 



Compared with A', crispipilum Taylor in Herb. Hooker, nos. 1 35, 

 a, b ; Spruce Musci Am. et And. 



Leaves less cirrous pointed than 135 b; stems shorter than 

 135; leaves exactly alike; capsules on shorter pedicels, less cylin- 

 dric, shorter and broader, with a broader mouth. General aspect 

 quite different. 



Leucobiywn loiigifolhun Hpe. Mapiri, 2500 ft. May, 1886 



(3119)- 



Sporophyte immature. Agrees with no. 71 c. of Spruce's 



Musci Amazon, et. And. and with no. 7169 of A. Glaziou from 



Rio Janeiro, both at Kew. 



Leucobryum strictum C. Muller, n. sp. Unduavi, lOOOO ft., Oct., 



1885 (3119a). 



Plants short, loosely tufted, mats dull gray when dry, stems 

 short, decumbent at base, less than 2 cm. high, brown when moist, 

 with light tips; leaves erect and slightly spreading, iridescent 

 when dry, about i cm. long by 2 mm. broad, concave from a 

 broad white base, tubular and dark above the middle, margin nar- 

 rowly hyaline, apex with a few brown cuspidate teeth. 



Plants sterile, smaller and darker than L. hidans (Brid.). "Ab 

 L. longifoliuvi Hpe., cellulis chlorophyllis tantum latioribus differt." 

 E. Bescherelle. 



