87. GENUS DALTONIA, Brid. 
Whole Plant — Perennial, small, erect, branched ; growing in large dark green tufts, about | an inch in height. 
Stem — Erect, branched, branches fastigiate. 
Leaves — Spreading, crowded, lanceolate, carinate, dark green, nerre reaching nearly to the apex ; areote rhomboid in the 
centre, basal and marginal cells elongated. Perichsetial leaves much smaller. 
Inflorescence — " Synoicous or monoicous. ' 
Barren Flower (Antheridia) 
Fertile Floiver (Aechegonia) 
Vaginula — Cylindrical. 
Capsule — Oval-oblong, with a short neck, erect, colour purplish brown, on a partially rough fruit stalk. 
Calyptra — Couico-mitriform, fringed at the base. 
Operculum — Conico-rostrate. 
Peristome — Double, composed of 16 long, subulate pale yellow teeth, trabeculated ; inner teeth divided into 16 
narrow, slender processes. 
Annulus — None. ' 
Spores — Very small, yellow. 
General Habitat — On moist shady rocks, or near rills on the mountains in Ireland. Fruit : — October, November. 
Species Illustrated — Daltonia splachnoides (Hook, and Tayl.), Hookeria splachnoides (Taylor). 
Reference to Plate — a, Plant, natural size ; b, Stem leaf, X 1-in. ; c, Apex of leaf, X ?-in. ; d, Cells of mid leaf, X i-in. ; e, 
Basal cells, X i-in.; /, Capsule, X 1-in. ; g, Calyptra, X li-in. ; h, Operculum, X H-in. ; i, Teeth of Peris- 
tome, outer and inner, X i-in. ; h, Vaginula, X 1-in. 
This genus in represented in Britain by the species figured. 
88. GENUS CRYPH^A, Mohr. Bvidel. 
Whole Plant — Perennial, decumbent, creeping, branched, branches erect, dark dull, or yellowish green, about an inch in 
length. 
Stem — Creeping from a rhizome, branches bare at the lower part. 
Leaves — Ovate, imbricated, pointed, entire, margin recurved, nerve thick, reaching above half way ; areolae oval, marginal 
cells larger. 
Inflorescence — Monoicous. 
Ba,-ren Flower (Antheridia)- | ^^j^ary, lateral. 
Fertile Flower (Akchegonia) — I ' 
Vaginula — Cylindrical, very short. 
Capsule — Oval or roundish, immersed, erect in the perichcetial leaves. 
Calyptra — Conico-mitriform, smooth. 
Operculum — Conico-rostrate. 
Peristome — Double, composed of 16 subulate teeth converging into a cone, trabeculated ; inner peristome divided 
into 16 filiform processes. 
Annulus — Large, deciduous. 
Spores — Eather small, yellow. 
General Habitat — On the branches of low bushes and the trunks of trees in England, "rare in Scotland." 
Species Illusteatbd — CryphEsa heteromalla (Dill., Hedw.), Daltonia heteromalla (Hook, and Tayl.). Fruit : — Autumn 
Winter. 
Reference to Plate — a. Plant, natural size; aa. Portion of stem and capsule, x 2-in ; 6, Stem leaf , x 1-iu. ; ab, Same 
X 2-in. ; 66, Pericheetial leaf, X 2-in. ; c, Outer and inner teeth of peristome, X i-ii^- > <^'-'- inner teeth of 
peristome, x i-in. ; d, Mid-leaf and marginal cells, X i-in. ; e, Archegonia, X i-in. ; /, Capsule, X 2-in. ; 
g. Operculum, x 1 -iu. ; li. Calyptra, X 1 -iu. 
This genus is represented in Britain by the species figured. 
89. GENUS rONTINALIS, Dill 
Whole Plant — Perennial, floating mosses, attaching themselves to stones in water, weakly and flexible plants, branched 
from six inches to twelves inches or more in length, with oval or ovate immersed capsules ; dark green. 
Stem — Subdivided, with spreading branches, lower part leafless. 
Leaves — Ovate-lnnceolate, or ovate-acuminate, concave, nerveless ; areolEe, elongated, rhomboid, xmiform throughout the 
leaf, colour when young of a yellowish-green, olive or dark green when older. Pericheetial leaves sheathing and 
obtuse. 
Inflorescence — Dioicous. 
Barren Flower (Antheridia) — Lateral, oblong with paraphyses. 
Fertile Flotver (Akchegonia) — Lateral, small, eserted, having paraphyses. 
Vaginula — Oval. 
Capsule — Ovate, immersed, constricted below the mouth, colour brown, on a short pedicel. 
Ca.Zi/yira— Conical, crenated at the base. 
Operculum — Conical, beak short. 
Peristome — Double, composed of 16 outer equi-distant beautiful red twisted teeth, prominently trabeculated, and 
spreading, inner peristome consisting of 16 filiform processes united by horizontal cross-bars, in the whole an 
elegant object. 
Annulus — None. 
Spores — Small, green, smooth. 
General Habitat. — In stagnant water and streams, typical species abundant in the South of England, mostly barren. 
Fruit : — June, July. 
Species IllusteatfD' — Fontinalis antipyretica (Linn.), and F. squamosa (Linn.) in part. 
Reference to Plate — F. antipyretica. a, Ft rtile branch, natural size ; aa, Portion of plant, natural size ; 6, Stem leaves X 1-in. ; 
bb, Perichsetial leaf, X 1-in, ; ah, Capsule surrounded with perichastial leaves, X 2-iu. ; c, Outer teetW of 
peristome, X i-in. ; cc, Inner teeth of same, X i-in. ; rl. Cells of stem leaf, X j-in. ; /, Capsule and Opercu- 
lum, X 2-in. ; g, Stem leaf of F. squamosa, X 1-in. ; h, cells of same, X i-in. 
This genus is represented in Britain by two species. 
29 
