Par? 2, 1913] DICRANACEAE 89 
high, divided three fourths down, striate below, with densely papillose, paler forks: spores up 
to 20 uw in diameter, rough. 
TYPE LocaLiry: Blue Mountain Peak, Jamaica. 
DISTRIBUTION: Known only from the type locality. : 
This species is near D. reticulata, but without the distinct lamina of the upper leaf found in that 
species; also the spores are rather smoother and smaller. of 
‘ 
‘ 
16. Dicranella Barnesii Card. Rev. Bryol. 37: 118° 1910.¢ 
Dioicous or autoicous, the male flower either at the apex of a distinct plant or on an 
elongate branch from well below the perichaetium: inner perigonial leaves with broadly ovate 
base rather abruptly narrowed to a smooth, flexuous point, denticulate at the apex, or some- 
times without an elongate point, and enclosing 5 or 6 antheridia 0.4 mm. long, and about 
twice as many paraphyses: plants in rather loose tufts, with stems mostly 5~6 mm. high: 
stem-leaves up to 2.5 mm. long, from a narrow, erect, scarcely distinct base, gradually nar- 
rowed to a spreading, flexuous, somewhat tubulose or deeply grooved point, entire except at the 
apex; costa broad below, more than one third the width of the leaf-base, often rather indistinct, 
filling most of the leaf above; lower leaf-cells linear, those in the narrow blade above rec- 
tangular, about 5 » wide and 4-6 times as long; perichaetial leaves like the stem-leaves but with 
broader, ovate base: seta yellowish, 12-14 p» long: capsule oblong-cylindric, erect and straight 
or somewhat curved, 1.5 mm. long; exothecal cells elongate, mostly 3-4 times as long as 
broad, with curved walls; lid obliquely subulate-pointed, about two thirds as long as the 
capsule; annulus none; peristome-teeth about 300 « high and 45 » wide at the base, red, ver- 
tically striate to above the middle, separate to near the base and divided three fourths down 
or more into slender forks: spores minutely roughened, up to 14 » in diameter. 
TYPE LOCALITY: Honey Station, Hidalgo. . 
DISTRIBUTION: Known only from the type locality. 
17. Dicranella heteromalia (L,.) Schimp. Coroll. Bryol. 
Eur. 13. 1855. 
Bryum heteromallum L. Sp. Pl. 1118. 1753. 
Dicranum orthocarpum Hedw. Sp. Muse. 131. 1801. 
Dicranella Fitzgeraldi Ren. & Card. Bot. Gaz. 13: 197. 1888. 
Campylopus Henrici Ren. & Card. Bot. Gaz. 13: 197. 1888. 
Plants in dense, dark-green tufts or broad mats, with more or less branching stems mostly 
1-4 cm. high and leaves somewhat erect-flexuous or usually appressed and curved-secund: 
stem-leaves from a lanceolate or ovate-lanceolate base, gradually narrowed to a rough subulate 
point formed by the excurrent costa, the leaf-blade only 1-3 cells wide above the middle of 
the leaf on either side and serrulate nearly to the base; costa about 70 u wide at the base, one 
third of the width of the leaf-base and serrulate on the back in the upper part; leaf-cells rec- 
tangular, 2-6 times as long as wide, with slightly thickened, colored walls extending to the 
base; perichaetial leaves from a broader, more or less obovate, clasping base abruptly narrowed 
to a slender, rough subula 4-6 times as long as the clasping part, with the lower leaf-cells 
broader and less regular: seta erect or curved, yellowish, 5-15 mm., rarely up to 30 mm. long: 
capsule erect or nodding, 1-3 mm. long, ovoid to cylindric, usually more or less curved and 
becoming furrowed and contracted under the oblique mouth when dry and empty; exothecal 
cells excepting two or three rows of small, obscure cells just below the mouth, irregular, 
elongate, with very unequally thickened, sinuous walls; lid conic, long- and obliquely-rostrate; 
annulus imperfect, of a single row of small, roundish, hyaline, loosely cohering cells; peri- 
stome-teeth up to 80 » wide at the base, red, striate, usually divided one half down into two 
papilose forks, the inner lamellae prominent, regular, about 20 » apart, and the basal mem- 
brane scarcely projecting above the mouth: spores smooth, up to 17 » in diameter. 
TyPE Locality: England. 
DIstRIBUTION: Newfoundland to Florida and Alaska to California and Costa Rica; also in 
uurope and Asia. 
. 1s vere aioe: Dill. Hist. Muse. #1. ee 37; Hedw. Descr. 1: pl. 26; Hedw. Sp. Muse. pl. 
; B.S.G. Bryol. Eur. 1. 62; Bot. Gaz. 13: pl. 13. ; 
sg pal yeti Ae Musci Am. 95, 96; Drummond, So. Mosses 53, 54; Sull. Musci Allegh. 
165, 166; Sull. & Lesq. Musci Bor. Am. 51, 52; ed. 2. 67, 68; Aust. Musci App. 79, 80; Macoun, Can. 
Musci 29; Holz. Musci Acroc. Bor. Am. 5, 6, 28, 128. 
