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LEPID0Z1A SYLVATICA. 
Alexander W, Evans. 
(Tatfcgfl ffoffl Rhodora, September, 1904. For illustration refer to above Journal. 
Plate 57.) 
Lepidozia sylvaTICA sp. nov. L. setacca Auct. (in part). Growing in more 
or less compact tufts, often in company with other minute hepatics. brownish 
or yellowish green, varying to pale green : stemso.08 mm. in diameter, ascend- 
ing, irregularly pinnate or bipinnate; leafy branches usually lateral, very 
rarely postical, obliquely or widely spreading; flagelliform branches scanty, 
usually postical but sometimes terminating a lateral leafy branch ; rhizoids 
sparsely developed, mostly restricted to the lower parts of the leafy axes and 
to the flagelliform branches: leaves traversely inserted, distant to loosely 
imbricated; stem-leaves averaging 0.21 X 0.18 mm., deeply trifid or quad- 
rifid to within two or three cells of the base, segments entire, subulate, 
usually more or less incurved but sometimes straight and squarrose, two cells 
wide (rarely three or four cells wide) in basal portion and tipped with a row of 
from two to four cells; branch-leaves similar to the stem-leaves but smaller 
and usually bifid or trifid; leaf cells averaging 16 X 14/*, walls slightly and 
uniformly thickened, cuticle smooth or very indistinctly verruculose: under- 
leaves of the stem trifid (or very rarely quadrifid) to within one or two cells 
of the base, 0.15 mm. long, 0.065 mm. wide at base, segments when well 
developed similar to those of the leaves, one or two of the segments regularly 
aborted and reduced to one or two cells in length ; underleaves of the 
branches smaller and often only twice divided: inflorescence dioicous: Female 
inflorescence borne on a very short postical branch, often with no leaves except 
those of the involucre ; bracts and bracteoles in two or three rows, scarcely dis- 
tinguishable from one another, those of the innermost row ovate, 1 mm. long 
and o 35-0. 5 mm. wide, usually bifid about one-fourth with acuminate and 
denticulate or ciliolate divisions and a sharp and narrow sinus, rarely undi- 
vided, entire or sparingly toothed near base, cells longer and with thinner 
walls than in the leaves, cuticle more distinctly verruculose ; bracts and 
bracteoles of second and third rows successively smaller and more regularly 
bifid : perianth narrowly ovoid or cylindrical, 2.7 mm. long, 0.6 mm. in diam- 
eter. terete helow, bluntly trigonous above, the keels separated by narrow 
grooves, mouth more or less contracted, ciliate, the cilia one to four cells long 
and one or two cells wide at the base, cells of the perianth similar to those of 
the bracts ; Male inflorescence borne on a short postical or, more rarely, lateral 
branch, usually proliferating at the apex into a leafy axis ; bracts in four or 
five pairs, strongly concave, ovate, 0.35 mm. long, 0.2 mm. wide, bifid about 
one-half, the divisions acuminate, short-ciliate on the margins, sinus sharp, 
bracteoles mostly bifid with subulate divisions; antheridia solitary, oval; 
yellowish brown, 0.9 mm. long, 0.5 mm. in diameter: spores minutely verru- 
culose, yellowish brown, 12 n in diameter; elaters reddish brown, with two 
spirals, 9 // in diameter. 
On shaded banks and rotten logs. New Hampshire: White Mountains 
{Oakes). Massachusetts: Woods Holl (A. IV. E.): Amesbury (/. W. 
