Part 2, 1913] DICRANACEAE 1038 
1. Symblepharis helicophylla Mont. Ann. Sci. 
Nat. II. 8: 252. 1837. 
Symblephari i ii : 
Synblepharts Crimi © Mal Gee gk den 
: Autoicous: male flower inconspicuous, on a short stalk often some distance below the 
perichaetium, the perigonial leaves faintly costate, entire, ovate, concave, the outer ones 
“with a short, spreading rather acute point, the inner shorter, scarcely 1 mm. long, enclosing 8-12 
antheridia 0.4 mm. long, without paraphyses: fertile plants in large, soft, yellowish-green cush- 
ions, with somewhat branching stems usually 2-4 cm. high, tomentose below, in cross-section 
showing a large central strand, 60 by 120», and walls of 4 or 5 rows of thick-walled, brown 
cells: stem-leaves crispate when dry, from a clasping, somewhat obovate or obcuneate base 
about 1.5 mm. high gradually narrowed to a grooved, spreading point 4-5 times as long, with 
margins flat, of a single thickness of cells and entire except at the mostly denticulate apex; 
costa percurrent or slightly excurrent, about 80 « wide near the base, smooth except at the 
apex, in cross-section near the middle showing 7 or 8 guide-cells, stereid-bands above and below 
and outer cells differentiated; cells of the leaf-blade smooth, those in the lower part of the 
leaf very pale-brown, rectangular, often up to 12 4 wide and 100 u long, those above, in the 
spreading part, browner, angular, often nearly square, the median ones 6-8 » wide and 6-10 yu 
long with scarcely thickened walls; perichaetial leaves very similar to those of the stem but 
with a higher, clasping base: seta single or 3 or 4 from the same perichaetium, about 10 mm. 
long, straight or slightly sinuous: capsule 2-3 mm. long, oval to cylindric, smooth, reddish 
at the rim, nearly straight and erect or somewhat nodding, with small stomata in about two 
rows at the base; peristome-teeth lanceolate, reddish, deeply inserted, rather unequally divided 
about four fifths down into mostly 2 forks, vertically striate on the outer face, densely papillose 
on the inner; annulus none; lid with a somewhat oblique beak, one fourth to one third as long 
as the capsule: calpytra entire at the base, slightly rough at the apex: spores not quite smooth, 
up to 20 uw in diameter. 
TYPE LOCALITY: Oaxaca. 
DISTRIBUTION: Mexico; Guatemala; Costa Rica; Panama; also in Asia. 
ILLUSTRATION: Jour. Linn. Soc. 33: pl. 25. 
Exsice.: Pringle, Musci Mex. 544, 10441. 
2. Symblepharis Schimperiana (Paris) Card. Rev. 
Bryol. 38: 99. 1911. 
Syrrhopodon circinaius Schimp.; Besch. Mém. Soc. Sci. Nat. Cherbourg 16:172. 1872. Not Sym- 
blepharis circinata Besch. 1880. 
Syrrhopodon Schimperianus Paris, Index Bryol. 1254. 1898. 
Dioicous: male plants similar to the fertile, with several lateral and terminal, rather 
conspicuous buds, the larger perigonial leaves like those of the stem with usually a few inner, 
very small, pale leaves less than 1 mm. long, enclosing 10-15 antheridia about 0.5 mm. long and 
numerous, filiform paraphyses: fertile plants in large, yellowish-green tufts, with mostly freely 
branching stems, tomentose below and up to 4 or rarely 7 cm. high: stem-leaves crispate when 
dry, from a more or less obovate, erect, pale, clasping base rather more than 1 mum. high gradu- 
ally narrowed to a lanceolate, somewhat grooved point 5-6 times as long with flat, papillose, 
otherwise entire margins; costa slightly excurrent, mostly finely papillose on the upper side 
‘and smooth on the under side, up to 100 » wide near the base, jn cross-section near the middle> 
showing 6-9 guide-cells, large steréid-bands above and below and outer cells differentiated on | 
the upper side; cells of the leaf-blade in the base pale, elongate-hexagonal to rectangular, 
mostly 20-40 » long and 8-10» wide, usually with thickened, pitted walls toward the costa 
in the upper part of the base, the cells of the spreading point green, more or less obscure, 
mostly short, densely and minutely papillose on both sides with scarcely thickened walls, the 
median ones short-oblong to nearly square or slightly roundish, 6 by 64 to a by 10 yg; peri- 
' chaetial leaves very similar to those of the stem: seta erect, single or sometimes 2 from the 
same perichaetium, 1—1.5 mm. long: capsule erect, cylindric, smooth, 2.5-3 mm. long, with 
few, scattered stomata at the base; peristome-teeth erect, pale, inserted below the mouth, 
often quite irregular, densely papillose, not striate, more or less divided into 2 or 3 forks or 
