370 WILLIAMS: CALYMPERACEAE OF NORTH AMERICA 
I. SYRRHOPODON RIGIDUS Hook. & Grev. in Brewster, 
Edinb. Jour. Sci, 3: 226. 1826 
Calymperes androgynum Mont. Ann. Sci. Nat. II. 3: 195. 1835. 
Syrrhopodon longisetaceus C. Mill. Syn. 1: 535. 1849. 
Dioicous, male plants much like the fertile in habit, bearing 
several buds in the axils of the upper leaves rather over 1 mm. 
long, composed of two or three broadly ovate, lanceolate-pointed, 
serrulate and costate perigonial leaves, enclosing eight to ten 
antheridia about 0.5 mm. long, with few paraphyses: in rather 
compact, dull, brownish green cushions, red-tomentose within, 
with stems 1-3 cm. high; stem-leaves 7-8 mm. or sometimes up 
to 12 mm. long, spreading flexuous, from an ovate base I-1.5 mm. 
long, with margins sharply serrulate or somewhat spiny-dentate 
with often spreading teeth, rather gradually narrowed to a linear- 
lanceolate, acute point up to seven or eight times longer, with 
thickened, doubly serrate borders; costa stout, excurrent, grooved, 
enlarged at apex and beating numerous slender propagula with 
two or three cross-walls, smooth in lower part, mostly rough 
above on both sides or rarely nearly smooth, in cross-section show- 
ing about seven guide cells, large stereid bands above and below 
and outer cells differentiated all round; cells throughout upper 
part of leaf distinct, mostly oblong, 6-8 w wide and 12-16 pu long, 
mamillose on upper side, smooth beneath; cancellinae not filling 
entire basal part of leaf, more or less golden or reddish brown, 
mostly terminating above in acute angles; perichaetial leaves 
about like upper stem-leaves, but the inner smaller; seta 2-2-5 
cm. long; capsule oblong, about 1.7 mm. long with conical, rostrate 
lid of about equal length; peristome a low, yellowish membrane, 
when moist scarcely extending above rim of capsule; spores rough, 
i to ia 22 w in diameter; calyptra nearly smooth throughout. 
IG. I. 
TYPE LOCALITY: Trinidad. 
DistRIBUTION: Porto Rico, Guadeloupe, Martinique, 5t. 
Vincent, Grenada, Trinidad and northern South America. 
ILLUSTRATION: Ann. Sci. Nat. II. 3: pl. 3, f. 2. 
2. SYRRHOPODON BERNOULLI C. Miill. Bull. Herb. Boiss. 5: 
189. 1897 . 
Syrrhopodon Pittieri Ren. & Card. Bull. Soc. Bot. Belg. 41': 54- 
1905. . 
Dioicous, male plants stout, branching, with often abundant 
axillary flowers, the perigonial leaves mostly golden brown, the 
