( 20 ) 
482 
Granada, 2075, and Jameson’s, from the Andes of Quito, 1847. Our 
plants are larger than Lindig’s, the capsules longer and the pedicels 
single. The leaf is broadly undulate, ending in a short cusp, the 
marginal cells short, quadrate and papillose, the basal cells oblong 
and hyaline. The basal membrane of the peristome is very short, 
the teeth twisted once, white and granulose. Bescherelle says of 
this: “ Folia ad basin margine recurvis, cellulis inferioribus simili- 
bus differe mihi videtur. 7 . fragilis (N. Grenada, Lindig, 2075) 
folia basi plana, ab cellulis marginales inferiore minores ut margi- 
natahabet: an T. fragilis forma peculiars ?” 
lortula Pichinchensis Taylor ( Barbula affinis Hpe.). Ingenio 
del Oro, 10000 ft. (3122). 
Compared at Kew with Spruce’s nos. 185, 194, 197, 200-202 
Andium Quitensium. Also verified by M. Bescherelle. 
Orthotrichum pariatum Mitt. Sorata, 10000 ft., Feb., 1886 
(3130). 
Compared with no. 130 Spruce, And. Quit., with which it 
agrees. 
Macromitrium Rusbyanum E. G. Britton, n. sp. Unduavi 12000 
ft. October, 1885 (3188). 
Plants large and showy in yellowish-brown tufts; stems 9-10 
cm. long,repeatedly branching; leaves brown,broken and abraded 
on the lower parts of the stems, light yellow, longer and spirally 
twisted at the tips of the branches, 5-9 mm. long, lanceolate-lin¬ 
ear, from a broader yellow or brown base, margins finely serrate 
above, vein ending in the channelled apex; lower cells elongated, 
porose ; upper, shorter with thick protruding walls. Dioecious ? 
Seta twisted or arcuate, 5 mm. long, stout; capsule almost globose, 
2 mm. long, walls smooth and thick, brown and shining; lid conic- 
beaked ; peristome double, outer, a thick fleshy membrane; inner, 
short, fragile, with bright yellow smooth teeth ; calyptra, not seen ; 
spores large, .0810-.0864 mm. 
This is one of the handsomest species collected by Dr. Rusby 
and was dedicated to him by Dr. Muller, but referred to a new 
genus allied to Leptodontium; but after careful comparison 
at Kew with specimens of Macromitrium trichophyllum Mitt., 
and M. scoparium Mitt., I have concluded that its alliance is with 
these species. The absence of the calyptra is unfortunate, but in 
all other respects the likeness is very close, and the alliance is 
concurred in by William Mitten, to whom specimens were sent. 
