CRYPTOGAMIA. MUSCI. Bryum. 1035 
Dicks. Fasc. iii. 7. 9— [Muse. Brit. xx.— E. Bot. 2493. E.) 
From two to four lines high. Leaves crowded, upright, but expanding, 
acute, keeled, serrated upwards, yellow green, twisted when dry. 
Fruit-stalk terminal, near half an inch high, pale, yellow. Capsule 
cylindrical, but a little swollen at the base. Lid conical, blunt, rather 
thicker at the top. Veil awl-shaped. 
(Waved-leaved Thread-moss. Trichostomum Jlexifolium. Sm. Brid. 
Didymodon Jlexifolium . Muse. Brit. E.) On barren sloping ground near 
Croydon. Dickson. Abundant on the moor, two miles from Buxton on 
the Manchester road. Dr. Greville. On Ben Ledi, and mountains be¬ 
tween Loch Earn and Loch Tay. Mr. Arnott. Muse. Brit. 
B. convolu'tum. Capsules cylindrical: involucrum leaves blunt, 
rolled up so as to form a cylinder: leaves spear-shaped. 
Dicks. H. S. — Hediv. Slirp. i. 32— (Muse. Brit, xii.-— E. Bot. 2382. E.)— 
Dill. 48. 44— Schmid. 57. 5. 
Grows in dense tufts, half an inch or more in height; branches issuing out 
of the thickened tops of the old shoots, which are stellated at the ends. 
Leaves loosely disposed, ending in hairs. Fruit-stalks from the last 
year’s shoots, one inch long, encompassed at the base by an involucrum 
of awl-shaped hairy leaves. Weis. Sometimes with forked branches. 
Leaves very slender, hardly a quarter of a line broad at the base, very 
entire. Involucrum terminal, embracing closely the base of the fruit- 
stalk. Capsule cylindrical, a line long, hardly a quarter as broad. 
Mouth without a ring ; fringe red. Lid slender, upright, awl-shaped. 
Veil pointed, smooth, thread-shaped, reaching but half way. Pol. Inner 
involucrum-leaves heart-shaped, blunt. 
(Convoluted Thread-moss. Tortula convoluta. Sw. Sm. Hook. E.) 
B. setaceum. Huds. 481. Lightf. 729. (Mniubi 'setaceum of Linn, is 
a different species which has rigid bristle-shaped leaves.) Dicks. Bar - 
hula convoluta. Hedw. in the plate named setacea. Heaths, hedge banks, 
and walls, very common. A. March. 
B. dealba'tum. Capsules roundish, somewhat bent, toothed and 
fringed: leaves spear-shaped, acute, expanding. Dicks, ii. 8. 
Dicks. 5. 3. a. b. c. —( E. Bot. 1571— Muse. Brut. xxviii. E.) 
Habit that of B. trichoides, from which it differs as follows. Leaves spear- 
shaped, mostly pale, under the microscope reticulated, pellucid, finely 
but obscurely serrated at the end. Lid, beak short. Dicks. 
Pale-leaved Thread-moss. Meesia dealbata. Sw. Hedw. 41. 6-9. E.) 
Mountains in Scotland ; on Ben Lawers. 
B. extincto'rium. Capsules cylindrical, entirely covered by the bell¬ 
shaped veils: shoots simple: leaves spear-shaped: (veil entire 
at the base. E.) 
Dicks. H. S. — (E. Bot. 558— Muse. Brit. xiii.— Hedw. Stirp. i. 18— FI. 
Dan. 1001— Dill. 45. 8—Vaill. 26. 1. 
Fruit-stalks terminal. Capsule , mouth not fringed. Neck. Grows thick 
together in patches, half an inch to one inch high; sometimes a little 
branched towards the top; very leafy, ending in roses. Fruit-stalks not 
half an inch long, upright. Capsules cylindrical. Lid sharp-pointed. 
The veil covering the whole capsule and hanging down below it, distin¬ 
guishes this from every other moss. Dill. 
