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Tbibe XIX. HOOKERIEÆ.
Plants small, soft, sparingly and irregularly branching.
Leaves either narrow and spreading or broader, ovate, nearly
round, or lingulate, flat, loosely imbricate ; areolation large ;
perichætium of few leaves, on a short rooting perichætial
branch. Calyptra conical or mitrate, nearly entire at base or
ciliate, smooth or papillose or pilose. Capsule sub-erect or cernuous
or horizontal, on a long papillose rarely scabrous pedicel.
Peristome double, large, regular; teeth lanceolate, subulate,
densely articulate ; segments carinate.
112. HOOKERIA, Tayl.
Leaves ovate or lingulate, abruptly or gradually acuminate,
rarely round or truncate, bicostate, generally margined and serrate,
opaque. Flowers monoecious. Calyptra narrowed at
base, scarcely reaching lower than the operculum. Teeth of
the peristome linear-lanceolate, subulate, purplish ; segments
entire, orange-color. Annulus simple, narrow.
1. H. v a ria n s , Sulliv. Polj'gamous : plants densely cespitose,
yellowish; stems and branches flattened: leaves ovate,
acuminate and lanceolate, soft, hyaline, with a lai-ge round or
oblong areolation, margined by a single row of elongated cells,
scarcely serrulate, bicostate to the middle : calyptra glabrous :
capsule oblong, horizontal ; lid conical, subulate ; peristome
normal. — Proc. Amer. Acad. v. 285.
Hab. Enterprise, Florida {J. Donnell Smith, C. II. Fitzgerald).
2. H. c ru c e a n a , Duby. Plants very small, yellowish
green, irregularly divided ; branches slender, short, complanate,
rounded at the apex : stem-leaves loose, secund, crispate when
dry, erect-open when moist, broadly ovate or lingulate, often
reflexed at the mucronate apex, concave, papillose ; upper areolation
with serrate papillæ, the upper colls irregularly globose-
angular, the lower larger and longer; eosta double, enlarged
and diverging at base, converging nearly to the apex of the
leaves; perichætial leaves smaller, similar: calyptra glabrous,
conical, at first covering the whole capsule, later covering it to
the middle, fimbriate, caducous : capsule first erect, then horizontal,
brown, very small, oblong or ovate-cylindrical, shortnecked
; operculum half as long as the capsule ; teeth incurved,
broad, lamellate, cristate on the borders, dark purple ; segments
longer, narrow, plane, subhyaline.—Crypt. Exot. in Genev.
Soot Phys. Méin. xix. 302, t. 4, f. 2 ; Mitten, Journ. Linn. Soc.
xii. 349.
H a b . Florida [Austin, J. Donnell Smith, Fitzgerald); sterile.
3. H. (?) S u lliv a n tii, Muell. Ms. Stems short, prostrate,
sparingly branched : leaves ovate-oblong, acute, hyaline, entire,
soft, yellowish, of the same consistence, color and size as those
of Pterigophyllum litcens : fruits and flowers unknown. —JZ
acutifolia, Sulliv. Mosses of TJ. States, 66.
I I a b . Cold mountain springs; Middle Ohio and Alleghany Mountains
(Sullivant); North Carolina (Lesquereux); deep canons, California (Bolander)
; very rare and found only sterile.
The position of tliis species is still uncertain.
H o o k ek ia a n om a la , Muell. (Ehacophilum, Schwaegr. ; Pterygophyl-
lum. Mitt.), a species with erect tomentose stems and sparse leaves, broadly
obtuse from a shortly spatulate base, oblique, unequal, coarsely and distantly
serrate, the cells thick, large, round-hexagonal, obtuse near the
border, and separated by intercellular ducts, is, according to Mitten (Journ.
Linn. Soc. xii. 397), a Fuegian species, thongh stated by Schwaegrichen,
probably through mistake, to have been collected originally in Northwest
eru America by Menzies.
113. PT ERY G O PH Y L LUM , Brid. (PI. 5, as Hookeria.)
Plants pale green, glossy, piano-foliate ; branches few, rooting
at base like the primary stems and similar to them. Leaves
large, densely and obliquely imbricate, smooth, chlorophyllose,
broadly ovate, obtuse or acuminate, ecostate, entire; cells of
the areolation large, round in the upper part, hexagonal at base.
Flowers monoecious ; perichætium small, on a short thick rooting
perichætial branchlet, serving as vaginule; perichætial
leaves few, lanceolate, thin. Calyptra mitrate. Peristome that
of Hookeria.
1. P. lucens, Brid. Lower leaves rounded, the upper
larger, broadly ovate-oblong, flat and obtuse: capsule small,
oval, chestnut-color, turning to black ; pedicel long, thick, reddish;
lid long-beaked from a conical base; segments slightly
dehiscent along the keel.—Muse. Recent. Suppl. iv. 149;