60. Genus BARTEAMIDULA, B, & 8. 
Whoie Plant — Perennial, very small, and delicate, erect, a most beautiful little moss, growing in patches, about i an inch 
in height. 
Stem — Decumbent, branched, radiculose. 
Leavks — Ovate or lanceolate, erect, denticulate, nerve strong ceasing below the apex, areolae, oblong-quadrate, or hexagonal, 
bright green. 
Infloeescence — Synoicous. 
Barren Mower (Antheridia) — 
Fertile Flower (Aechegonia) — Pew, paraphyses filiform. 
Vaginula — Cylindrical, surrounded with archegonias. 
Capsule — Drooping, somewhat pyriform, or globular, with a short tapering neck on a curved reddish fruit stalk, 
colour pale pink, texture thin, pellucid. 
CaVyptra — Small, fugacious, cucnllate. 
Operculum — Small, subconical. 
Peristome — None . 
Annulus — Wanting. • 
/Spores.— Large, reddish brown, granular. 
General Habitat — Growing on the mountains of Wales, Scotland, and Ireland. On turfy soil. Fruit r — October. 
Species Illustrated — Bartramidula Wilsoni (Bruch & Sch.). 
Reference to Plate — a, Plant, natural size; aa, Plant, X 2-in. ; h, Stem leaf, X 1-in. ; hh, Branch leaves, X 1-in. ; al, 
Pericheetial leaf, X 1-in. ; c, Apex of leaf, X i-in. ; d, Marginal cells, X T-in. ; dd, Basal cells, X ?-in. ; 
ee, Vaginula, with archegonia and paraphyses, X 1-in. ; /, Capsule, X 1-in. 
This genus is represented in Britain by the species figured. 
61. Genus BARTRAMIA, Hedwig. 
Whole Plant — Perennial, fine showy erect plants, growing on the ground or on rocks, having terminal fructification, and 
varying in height from -J an inch to 6 inches, of yellowish green or glaucous hue. 
Stem — Erect, or decumbent, branches short and slender, at the top of the stem. 
Leaves — Lanceolate, rigid, serrulate, spreading, papillose, areolae, oblong-quadrate small in the middle and upper ijortions 
of the leaf, basal cells larger, nerve strong, either ceasing below or continuing to the apex. 
Inploeescence — Monoicous, dioicous or synoicous, terminal. 
Barren Flower (Antheridia) — Cylindrical, paraphyses filiform. 
Fertile Flower (Archegonia) — Mixed with filiform paraphyses. 
Vaginula — Oblong. 
Capsule — Large, somewhat spherical or oval, cernnous or erect, usually on long straight fruit stalk occasionally short 
and curved, reddish brown. 
Calyptra — Small, dimidiate. 
Operculum — Small, conical. 
Peristome — Double or single, having 16 lanceolate equidistant outer teeth, when dry erect, resembling a cone when 
moist, colour red. 
Annulus — None. 
Spores — Large, reddish. 
General Habitat — Shady moist banks, wet places, near springs in mountainous districts, and on a calcareous or chalky soil 
Fruit : — Spring, Summer, and Autunm. 
Species Illustrated — Bartramia calcarea (Bruch & Sch.). 
Meference to Plate — a, Plant, natural size; 6, Stem-leaf, X 1-in.; hh, Perichastial leaf, X 1-in.; c. Apex of stem leaf, 
X ?-in. ; cc. Apex of Perichffitial leaf, X i-in. ; d, Basal cells, X i-in. ; dd, Midleaf cells, X i-in. ; 
e, Archegonia and paraphyses, X 1-in. ; ee, Antheridia and paraphyses, X 1-in. ; /, Capsule, X 2-in. ; 
ff, Teeth of peristome, X i-in. ; g, Cells of pericheetial leaf, X i-in.; gg, Operculum, X 1-™- 
This genus is represented in Britain by twelve species. 
62. Genus CONOSTOMUM, Swartz. 
Whole Plant — Perennial, erect, glaucous green, fruit terminal, about 2 inches in height, 'of an Alpine habit. 
Stem — Radiculose, branched. 
Leaves — Lanceolate, serrulate at the upper part, nerve strong, ceasing below the apex, areolation quadrate, elongated. 
Inflorescence — Dioicous. 
Barren Flower (Antheeidia) — With clavate paraphyses. 
Fertile Flower (Archegonia) — Styles long. . ' 
Vaginula — Oblong. 
Capsule — Globose, cernuous, reddish brown, on a long fruit stalk. 
Calyptra — Large, cucullate. 
Operculum — Large, conical, rostrate. 
Peristome — Single, with 16 equidistant red lanceolate teeth united at the points, and transversely barred, giving the 
appearance of a cone. 
Annulus— 'Sone. 
Spores — Large, yellowish brown. 
General Habitat — On the Scotch mountains. Fruit : — August, September. 
, Species Illustrated— Conostomum boreale (Swartz). 
Reference to Plate — a. Plant, natnral size; h, Stem leaf, X 1-in.; c, Apex of stem leaf, X J-in. ; cc, Teeth of peristome, 
X 1-in. ; d. Basal cells, X i-in.; /, Capsules, x 2.in. ; ff, Operculum, X 1-in. ; h, Spores, X i-in. 
This genus is represented in Britain by the si^ecies figured. 
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