Var. ru p e s tris , Sulliv. & Lesq. More densely tufted,
stouter; branches julaceous : leaves shorter, broader, obtuse:
capsule broader ; operculum shorter. — Muse. Exsicc. n. 246»-
IIab. Trunks and branches of trees, especially along rivers; the
variety on rocks covered by inundations, and on the muddy base of trees,
in the Soutliern States.
The variety appears to resemble closely, if indeed it is not identical
with, Anisodon acutirostris of Schimper, of which we have seen no
authentic specimens. — (Sullivant.)
T kibe XXI. LESKEEZE.
Primary stems creeping; stems or primary branches diversely
hrauehing, erect or declining or prostrate. Leaves
equally spreading or secund, soft, opaque, costate, with paraphyllia
of various forms often interposed; cells of the areolation
densely chlorophyllose, papillose, minute, hexagonal or
punctiform in the upper part, looser and hexagonal-rectangular
below. Flowers upon the primary or secondary stems; vaginule
perfect. Calyptra cucullate, naked. Capsule symmetrical,
erect or curved, oblique or horizontal. Peristome double; the
teeth linear-lanceolate or subulate; inner basilar membrane
more or less deeply cut into 16 carinate-plicate segments shorter
than the teeth, sometimes separated by rudimentary or long
perfect cilia. Spores minute.
118. TH E L IA , Sulliv. (PI. 6.)
Plants growing in compact glaucous or yellowish green mats,
on the base of trees, rarely on sandy ground; stems villous with
a radicular tomentum, creeping, throwing up densely crowded
short terete branches, with deeply concave closely imbricated
deltoid-ovate slenderly pointed leaves, composed of pellucid
elliptical and conspicuously unipapillate cells. Capsule ovate-
cylindrical, erect. Lid conical, obliquely rostellate. Peristome
double; the outer of 16 linear-subulate white granulate distantly
articulated teeth, the inner a carinate membrane half the
length of the teeth, without or with rudimentary segments.
Flowers dioecious; male plants as yet unknown.
1. T. h irte lla , Sulliv. Stems closely creeping, some of
them extending beyond the tufts ; branches erect, terete, obtuse ;
leaves concave, round-ovate, abruptly and narrowly acuminate,
slightly decnrrent at base, very scabrous on the hack with
simple incurved papillæ ; borders spinulose-dentate above, lohate-
ciliate toward the base, all the cilia long, curved up, and more
or less dentate ; costa slender, vanishing in the middle ; perichætial
leaves numerous, loosely imbricate, the inner ohlong-
lanceolate, narrowly acuminate, fimbriate in the upper part by
long dentate cilia: calyptra dimidiate: capsule thin; pedicel
1 c.m. long ; teeth linear, distantly but distinctly articulate, the
inner basilar membrane truncate, one third the length of the
teeth : spores pale yellow. — Mosses of TJ. States, 60, and Icon.
Muse. 128, t. 80 ; Sulliv. & Lesq. Muse. Bor.-Amer. Exsicc. n.
247. Pterigynandrum hirtellum, Hedw. Spec. Muso. 89, t. 17.
Ilypnum hirtellum, Muell. Syn. ii. 468.
H a b . Base of trees, Northern and Middle States; not rare and copiously
fruiting.
2. T. a sp re lla , Sulliv. Differs from the preceding in its
glauoous-green color, the leaves bordered nearly all around by
longer cilia, the papillæ upon the hack bifurcate, not simple and
curved, and the teeth longer, with nodose articulations.—
Mosses of the U. States, 60, and Icon. Muse. 129, t. 81. Leslcea
asperella, Schimp. in Bryol. Eur. Leslcea, 2.
H a b . Same as the last, and sometimes found growing with it.
3. T. ro b u s ta , Duby. YVith mode of growth and habit of
T. hirtella, differing in the unilateral very crowded branchlets,
the leaves strongly bicostate to above the middle, rarely simply
costate, the cells of the areolation elliptical in the middle of the
leaves, quadrate on the borders, the lower longer, and all with
globose papillæ, and in the segments of the inner peristome
granulate and obtuse. — Regensb. Flora, Iviii. 284 (1875).
H a b . Elorida (Chapman, in Herb. Delessert).
4. T. L e scu rii, Sulliv. Closely resembling T. asprella,
distinguished hy its glaucous-green or whitish color, the stems
subfasciculate and more loosely divided in longer branches, the
leaves with a shorter acumen, not ciliate-fimhriate on the borders,
the papillæ of the hack cut star-like into three or four lobes, the
capsule longer and narrower, on a longer pedicel, the teeth
shorter and with less distinctly nodose articulations, and the