92 NORTH AMERICAN FLORA [VorumeE 15 
about one half down or sometimes not divided or only perforate along the median line: spores 
up to 18» in diameter, very coarsely papillose. 
TYPE LocaLiry: Guadeloupe. 
‘ DISTRIBUTION: St. John; Dominica; Guadeloupe; Martinique; Barbados; Mexico. 
ILLUSTRATION: Schwaegr. Suppl. 1. 117. 
- Exsice.: Husnot, Pl. Ant. 124 (as D. Duchassaingii Schimp.). 
cL 23. Dicranella sphaerocarpa Card. Rev. Bryol. 36: 69. 1909. 
Plants in loose green mats or somewhat gregarious; stems up to 5 mm. high, branching, 
with leaves erect-flexuous when dry: upper stem-leaves lanceolate or oblong-lanceolate, about 
2 mm. long, with a mostly narrowly obtuse, crenate apex and borders recurved above, the 
leaf-blade usually 3 or 4 cells wide on either side of the costa to near the apex; costa 50-60 u 
wide below and one fifth to one seventh the leaf-width, vanishing in or below the apex; leaf- 
cells, with thin walls, mostly rectangular, the lower ones about 12 » wide and 60-80 u long, the 
median 8~10 « by 20 p, the upper shorter; perichaetial leaves scarcely clasping, resembling the 
upper stem-leaves but with rather broader base: seta erect-flexuous, yellowish, about 5 mm. 
long: capsule erect, nearly globose, 0.6 mm. in diameter, the exothecal cells 20-30 u wide and 
from scarcely elongate to twice as long as wide, with the walls slightly thickened at the 
angles; lid obliquely rostrate, about the length of the capsule; annulus large, of 2 rows of cells; 
peristome-teeth pale rusty-brown, less than 100 » high, papillose, irregularly divided or some- 
times not divided: spores minutely papillose, up to 17 uw in diameter. 
Typ LocaLity: Etzatian, Jalisco. 
DISTRIBUTION: On bare earth; known only from the type locality. 
24. Dicranella barbensis Ren. & Card. Bull. Soc. Bot. 
Belg. 31’: 145. 1893. 
Plants in thin, loose mats or somewhat gregarious; stems mostly simple, 5-6 mm. high, 
with leaves when dry erect-appressed, erect-spreading when moist: stem-leaves somewhat 
distant, lanceolate or ovate-lanceolate, the lower ones short, the upper gradually larger, witha 
percurrent costa about 50 » wide at the base and the leaf-blade distinct to the not quite entire 
apex; leaf-cells distinct, rather short rectangular throughout, mostly 8-10 « wide and 16-20 » 
long, with scarcely thickened walls; perichaetial leaves about 2 mm. long, from a broad-ovate 
base, rather gradually narrowed to an erect limb of about equal length, with the stout costa 
percurrent and slightly denticulate at the apex, and the cells of the lower part of the leaf more 
lax and irregular than in the stem-leaves: seta straight, straw-colored, 6-8 mm. long: capsule 
erect, oval, symmetric, with a large annulus and long, obliquely rostrate lid; peristome-teeth 
red, papillose, not vertically striate, irregular, two to three times forked, divided to the middle 
or below. 
‘Type Locality: Forests of Barba, Costa Rica. 
DIstRIBUTION: Costa Rica; Jamaica. 
The only specimens of the type collection seen are too immature for satisfactory examination of 
peristome and spores. Specimens collected by L. M. Underwood at Cinchona, Jamaica, and referred 
here, show peristome-teeth red, irregular, about 1504 high, papillose, not vertically striate, with 
forks often very unequal but not more than two in number, and spores 16 w in diameter, rough with 
minute papillae. 
25. Dicranella alpina (C. Miill.) Paris, Index Bryol. 
Suppl. 115. 1900. 
Angstroemia alpina C. Mill. Bull. Herb. Boiss. 5: 186. 1897. 
Dicranella gracilicaulis Card. Rev. Bryol. 37: 118. 1910. 
Dioicous: plants in low rather broad yellowish-brown cushions; stems very small, simple: 
leaves somewhat laxly imbricate, spreading when moist, from a very narrow base, lanceolate- 
acuminate, the broad percurrent costa occupying the very entire, elongate, more or less convolute 
subula, with basal cells rather lax, larger, those toward the apex much smaller, more rectangular; 
perichaetial leaves the longest: capsule on a yellowish, somewhat slender, elongate seta, very 
small, cylindric-elliptic, small-mouthed, with a conic, obliquely rostrate lid; annulus narrow, 
persistent; peristome short, normal: calyptra smooth. (Translated from the original de- 
scription.) 
