H a b . Mountain rivuiets of New Mexico (Wright), sterile specimens
upon which the species was founded ; Merced River, California (Bolander)
fertile; Kocky Mountains, also fertile [E. Ilall).
4. P . D a leca rlica , Bruch & Schimp. Plants fasciculately
ramose, naked toward the base, dark or dirty green : leaves
closely imbricate, narrowly ohlong-lanceolate, acuminate, glossy
concave and incurved on the borders ; perichætial leaves longeiè
aouminate, the inner surpassing the top of the lid, recurved at
the apex: teeth distantly articulate, lacunose between the
articulations ; cilia irregularly latticed, mostly disjointed, yellowish.
Bryol. Eur. t. 431. F . squamosa, Auct.; Sulliv
Mosses of U. States, 54.
IIa b . Mountain rivulets; not rare, and abundantly fruiting.
5. F . biformis, Sulliv. Plants yellowish gre°en when
young, dirty green when old ; stems long, very ramose: leaves
loosely imbricate, indistinctly three-ranked, dimorphous, the
vernal large, soft, broadly ovate-lanceolate, concave, acute or
blunt ; the later, after the falling off of the first, much smaller
and narrower, convolute, rigid, covering the young branches ;
areolation of the vernal leaves linear in the middle, broader-
rhomboidal and sphagniform near the apex, that of the small
decurrent basal auricles much larger, quadrate-oblong : female
flowers very rare, placed at the base of the stems, the male
long-stipitate, clustered (2 to 4) : calyptra long-conical, lacerate
at base : capsule oblong-oval, closely folded among the perichætial
leaves, generally erose at the apex when old ; lid conical,
rostrate; teeth linear-lanceolate, 18-20-articulate; cilia tessellate
and united at the apex only, granulose and papillose like
the teeth. —Mosses of U. States, 54, in part, and Icon. Muso.
99, t. 59, 60 ; Sulliv. & Lesq. Muse. Bor.-Amer. Exsicc. n. 226
226»’ and 226'- F . disticha, var., Sulliv. Muse. Allegh. n. 191,
and Pilotrichum sphagnifolium, Muell. Syn. ii. 150 ; a vernal
form. F . disticha, var., Sulliv. 1. c., n. 192, and Pilotrichum
distichum, Muell. 1. c., in part; the summer form.
I I a b . Woodlands, in rivulets; Central Ohio.
Besides otlier characters less striking, such as the rostrate operculum
tlie long-stipitate male flowers, etc., the prominent peculiarity of this
species IS the change which takes place in its foliage, the vernal leaves
being replaced in summer by others of a different size, form and texture.
6. F . N ovæ-Angliæ, Sulliv. Somewhat like the vernal
forms of the last species, differing in the more rigid elastic
stems, distantly and pinnately branched at right angles;
branches short: leaves close, firm, generally bright green,
densely areolate, not dimorphous: male flowers solitary, the
female very numerous in the axils of most of the leaves : capsule
and peristome as in F. biformis; cilia less papillose.—
Mosses of U. States, 104, and loon. Muse. 105, t. 65.
H a b . New Haven, Connecticut (Eaton); Massachusetts (Ingraham,
James); Rhode Island (Olney); Catskill Mountains, New Jersey, etc.
7. F. L escu rii, Sulliv. Plants green, passing to glossy
gold-color ; stems long, loosely foliate, irregularly branching,
suhpinnately ramulose toward the apex: leaves open-erect,
obscurely throe-ranked, long-lanceolate, concave, soft, clasping
at base, slightly serrulate at the apex ; medial cells very narrow,
flexuous, linear, the apical shorter and broader, those of the
basilar angles much larger, oblong, inflated : flowers numerous
toward the base of the plants: capsule short, subcylindrical,
thin, covered before maturity to above the operculum by the
inner ohlong-obtuse tubulose perichætial leaves, closely enfolding
it, becoming shortened by erosion when old ; lid long-
conical ; teeth granulose-papillose, of 20 to 25 articulations;
cilia trabeculate and connected at the apex, free and appendiculate
at base. — Mosses of U. States, 54, and loon. Muso. 101,
t. 61 ; Sulliv. & Lesq. Muso. Bor.-Amer. Exsicc. n. 228.
Var. g ra c ile sc en s, Sulliv. Smaller and more slender,
resembling F. disticha. — loon. Muse. 101.
H a u . Falls of Little River, Lookout Mountains, Alabama (Lesquereux);
Saco River, in the White Mountains (James); Oregon (Hall).
Tlie variety in New Hampshire, Eliode Island, New Jersey, Delaware,
etc.
8. F. S u lliv an tii, Lindb. Much like F. Lescurii, the
plants slender and smaller : leaves distant, narrower, dirty yellow;
hasilar cells very large; perichætial leaves shorter, not
nndulate at the apex: capsules numerous, cylindrical, shorter
and broader; lid longer. — Ofvers. Finska Yet. Soc. xii. 77.
F. Lescurii, var. ramosior, Sulliv. Icon. Muse. 101, t. 62.
H a b . Clieshire County, New Hampsliire (Eaton), and Brattleborough,
Vermont (Frost).
9. F. flliformis, Sulliv. & Lesq. Ms. Plants very slender,
much divided ; stems and branches filiform, flexible : leaves
convolute, narrow, rigid, loosely areolate ; primordial cells more
or less dissolved: capsules very numerous, long-cyliiidrlcal;