A Synopsis of the British Mosses / Containing Descriptions of All the Genera and Species, (With Localities of the Rarer Ones) Found in Great Britain and Ireland, Based Upon Wilson's "Bryologia Britannica," Schimper's "Synopsis," Etc.

by Charles C. P. Hobkirk

Old thatch, Amberley, Sussex (Mitten).

136. D. recurvifolius. Tayl. “Stems elongate, loosely cæspitose; l. squarrose, crisped and undulate when dry; elliptic-oblong or ligulate, pale margined serrulate, nerve sub-excurrent; areolæ small dense opaque, elongate and pellucid at base.” Ireland, 1842; fruit not known (Wilson).

26. TRICHOSTOMUM. Br. & S.

Sect. I. L. lanceolate or ligulate: dioicous.

137. T. tophaceum. Brid. St. ¼–1in. densely cæspitose, branches fasciculate; l. lanceolate (the upper ones obtuse), concave keeled, margins recurved; nerve not reaching to apex; caps. sub-cylindrical erect, regular; lid with an oblique beak; per. teeth variable, sometimes only 16, somewhat fugacious.

Moist places and rocks. XI.

138. T. brachydontium. Bruch. (T. mutabile. olim.) L. broader, lanceolate or ligulate, crisped, not cucullate, margin slightly undulate, nerve excurrent into a prominent mucro; caps. ovate-oblong erect, regular; lid obliquely rostrate; per. teeth very short and irregular.

139. T. crispulum. Bruch. St. ¼–1in., l. lower lanceolate, distant; upper crowded, longer, linear-lanceolate concave cucullate at apex, crisped when dry; nerve prolonged into a short mucro; caps. oval, erect, regular; lid with an oblique beak; perist. t. in unequal pairs.

Limestone rocks near the sea; Ormes Head; Anglesea; Bristol. VI. VII.

var. β. brevifolium. l. shorter, lanceolate, acuminate, caps. smaller. γ. angustifolium. l. narrowly linear-lanceolate crowded, apiculate.