22. ANACALYPTA. Röhl.
125. A. Starkeana. N. & H. Minute, gregarious; l. spreading ovate-lanceolate, entire, margin recurved; nerve excurrent; caps. small oval brown; lid convexo-conical; per. teeth obtuse perforate.
Banks and fields. I. II.
var. β. brachyodus. caps. narrower; per. teeth very short truncate.
126. A. cæspitosa. Bruch. Minute cæspitose; l. oblong-lanceolate or ovate, concave, plane, nerve excurrent; caps. ovate yellowish brown, lid with a long beak; per. teeth perforate.
Woolsonbury Hill, Sussex (chalk). III.
127. A. lanceolata. Röhl. St. ¼–½in. cæspitose; l. spreading ovate-lanceolate acute, margin recurved, entire; nerve excurrent into a longish mucro; caps. ovate; lid conical obliquely rostrate; per. teeth very variable, rather long, with a medial line.
Moist limestone banks, walls, &c. III.
128. A. latifolia. N. & H. St. short, gregarious, bulb-like; l. imbricate, broadly roundish ovate, pointed or obtuse, concave, nerve ceasing below apex: caps. oval-oblong, lid long, rostrate.
Alpine rocks, in crevices. Spring.
var. β. pilifera. l. with hair-like points.
[23. DESMATODON. Brid.—Vide “Tortula.”]
24. DISTICHIUM. B. & S.
129. D. capillaceum. B. & S. St. 1–2in. cæspitose; l. subulate-setaceous, spreading; caps. erect, ovate-oblong or almost cylindrical, reddish brown; per. teeth, narrow, articulate, bi- or tri-fid.
Scotch and Welsh mountains. Summer.
130. D. inclinatum. B. & S. St. shorter than last, and less cæspitose; leaves same, per. l. 1, 2, or 3 together; caps. oval, olive-brown, inclined or cernuous; per. teeth larger lanceolate, articulate, entire or perforate, bi-trifid.
Irish and Scotch mountains. VI. VII.
var. β. tenue. smaller in all its parts.
25. DIDYMODON. Br. & S.
1. Monoicous.
131. D. rubellus. B. & S. St. ¼–1in. cæspitose, lower leaves reddish, upper dull green, all oblong-lanceolate, spreading, margin recurved, keeled, nerved nearly to apex; caps. pale brown, cylindrical; lid with a short oblique beak; antheridia naked in axils of per. l.
Shady walls, rocks, &c. X.
132. D. Jenneri. Schp. St. 1–1½in. cæspitose, brownish black below; br. fastigiate; l. spreading cirrhate linear-lanceolate concave, keeled, serrate, nerved to apex; areolæ minute rectangular transparent at base; caps. oval-oblong, slightly drooping, lid with a short obtuse beak.
Ross-shire (Jenner and Howie). [Referred by Wilson, and others, to Cynodontium polycarpon.]
2. Dioicous.
a. L. lanceolate, rigid.
133. D. luridus. Hornsch. St. ¼–1in. cæspitose; l., lower ovate-lanceolate, upper larger and broader, with entire recurved margins, keeled, acute, nerved (reddish) almost or quite to apex, areolæ small roundish; caps. symmetrical oblong on a shortish seta twisted to the right; lid conical pointed; per. teeth small irregular.
Limestone walls, &c., rare. XII.
b. L. narrow, not rigid.
134. D. cylindricus. B. & S. ¼–1in.; l. spreading flexuose, linear-lanceolate, margin undulate and minutely crenulate; areolæ small opaque, gradually enlarged towards the base, there diaphanous; caps. erect, narrow, cylindrical; lid long conico-rostrate, per. teeth linear-lanceolate, fugacious.
Damp shady rocks. E. S. & I. X.
135. D. flexifolius. Hook. & Tayl. Barren stems long trailing, fertile ½in; l. spreading, flexuose, more so when dry, oblong or ligulate, margin reflexed below, and serrate at apex, nerve not reaching apex; areolæ round; caps. small cylindrical, somewhat curved, lid with a short beak; per. teeth short.
High moorlands, Buxton, Alderley Edge, Ben Ledi. III. IV.
var. gemmescens. Mitt. MS. Nerve excurrent into an apiculus, which bears a cluster of egg-shaped or oblong gemmæ.
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.
140. T. flavo-virens. Bruch. Müller. St. short, with innovations from summit (interruptedly comose); l. oblong-ligulate, obtuse mucronate, margins entire undulate incurved; fruit-stalk red, slightly flexuose; thick nerve prolonged into a short mucro; caps. oblong-cylindrical pale yellowish brown, with a red mouth; per. t. elongate, regular, in pairs. Lid acuminate, half as long as caps. with an oblique beak.
Shoreham, Sussex; Plymouth (Holmes), Malahide (Dr. Moore). [W. Mitten. Jour. Bot., VI., p. 97.]
141. T. littorale. Mitten. St. elongate, tufted, more or less interruptedly comose; l. erecto-patent, oblong-ligulate obtuse, channelled, recurved towards apex, with nerve excurrent into a short mucro; basal cells hyaline oblong and rectangular.
Ireland; Whitsand Bay, Cornwall; Hastings, (loc. cit. p. 99.)
142. T. (Ditrichum) tenue. Hedw. Dwarf, branched. L. from an erect base, patent or secund, narrowly lanceolate, uppermost lanceolate-subulate; per. l. sheathing half their length, quite entire; caps. oblong erect or a little curved, lid conic rostrate.
Carn Lochan and Mael Girdy, 1863 (Crombie); Clova (Fergusson). [Dr. Braithwaite, Jour. Bot. VIII. 228.]
β. glaciale. in long broad tufts with broader erecto-patent leaves. (This is Ditrichum zonatum Lorenz.)
Sect. II. L. subulate from a lanceolate base.
A. dioicous.
143. T. tortile. Schrad. St. ¼in. gregarious, sub-flexuose; l. mostly secund, somewhat falcate, margin reflexed, nerve excurrent into the slightly toothed apex; caps. small cylindrical, erect, regular or curved; lid conical, slightly rostrate; per. teeth irregular, purplish red.
Sandy places, rare; Belfast, Yorkshire, Sussex. X. XI.
144. T. flexicaule. Br. & S. St. 1–3in. flexuose, cæspitose, with fastigiate branches; l. longer and more setaceous than in last, flexuose, concave, usually secund, nerve broad, excurrent, toothed at apex; caps. erect, small, ovate-oblong; annulus present; per. teeth long irregular.
Scotch and Derbyshire mountains (calcareous). VI.
var. β. densum. densely cæspitose; l. straighter.
145. T. homomallum. B. & S. St. scarcely ½in. cæspitose; l. subulato-setaceous from a broadish base, mostly secund, nerve broad, much excurrent; caps. erect oblong-ovate, brown on a long red seta; annulus present; lid short conical obtuse; basilar membrane of perist. very narrow.
Sandy banks. Autumn.
B. monoicous.
146. T. subulatum. Bruch. St. ¼in. cæspitose; l. subulato-setaceous from an ovate base, spreading or somewhat secund, with a long excurrent nerve; caps. oval, lid large obliquely rostellate; seta somewhat flexuose; annulus none; basilar membrane very narrow; antheridia axillary naked.
Cornwall (Rev.—Tozer). Spring.
147. T. glaucescens. Hedw. St. ½in., branches fastigiate; l. glaucous, linear-lanceolate, margin plane (upper crowded into a tuft or coma), nerve sometimes excurrent into the denticulate apex; caps. oblong-oval, pale brown, with a long beaked lid; basilar membrane very narrow; barren fl. gemmiform.
Scotch mountains. Summer.