593 
Trichomctnes.'] cvm. polypodiaceae. 
12. Adiantcm Linn. Maiden-hair. (Tab. X. f. 7.) 
Sori oblong or roundish, marginal. Involucres formed each 
of a separate reflexed portion of the margin of the frond, open- 
ing on the inner side, bearing the capsules on a vein continued 
from the frond. — Veins forked in the British species. — Name: 
ahav TOf, that which is of a dry nature. 
1 . A. Capillus- Veneris L. ( true M.) ; frond bipinnate, pin- 
nules thin broadly obovate cuneate towards the base inciso- 
sublobate, segments of the fertile pinnules terminated by a 
linear-oblong sorus, sterile ones serrate. E. B. t. 1564 : Newm. 
p. 83 ; ed. 3, p. 1. 
Moist rocks and walls, especially near the sea, rare. Jersey. Ilfra- 
combe, Watermouth, Brixham, and Mewstone bay, Devon; Carclew, 
Penzance, and various places between St. Ives and Hayle, Cornwall; 
Cheddar Cliffs, Somerset. Barry Island, Porthkerry, Aberthaw, and 
Dunraven, Glamorganshire. Isle of Man. South Isles of Arran, 
and near Roundstone, Galway; near Tralee, Kerry; Bally vaughan, 
Clare: Ireland. If.. 5 — 9. — A most delicate and graceful fern, 
very abundant in the south of Europe. 
B. Capsules opening irregularly , placed on a receptacle at the 
margin of the frond and terminating a vein; the ring trans- 
verse, complete. Cellular tissue lux. Hymexophylle.e. 
(Gen. 12, 13.) 
13. Tkichomanes Linn. Bristle-fern. (Tab. X. f. 8.) 
Sori marginal. Capsules upon a long filiform receptacle , 
within a cylindrical, or suburceolate, monophyllous involucre , 
which is of the same texture as the frond, opening vertically. — 
Veins forked. — Name: rpixoyaviQ (from 9pt if, rpixoc, hair, and 
pai'oc, sparse ), applied formerly to the Asplenium Trichomanes 
of Linnaeus, supposed to have the property of restoring the 
hair where thin, and now to the present genus, which has 
numerous slender stems and hair-like receptacles. 
1. T. radicans Sw. ( rooting B.) ; fronds 3-4-pinnatifid gla- 
brous, segments linear entire or bifid obtuse, involucres solitary 
in the axils of the upper segments margined cylindrical, the 
mouth scarcely 2-lipped shorter than the protruded receptacle. 
— a. Swartzii ; fronds triangular, involucres scarcely winged. 
Newm. ed. 3, p. 283. T. brevisetuni Br. T. speciosum Willd. : 
Newm. p. 305. Hymenophyllum alatum Sm.: E. B. t. 1417. H. 
Tunbridgense /3. Sm. FI. Br. — 13. Andrewsii; fronds lanceo- 
late, sori copious, receptacles longer, involucres winged. Newm. 
p. 315 ; ed. 3, p. 292. 
Wet rocks in mountainous countries, rare. Formerly abundant at 
Bellbank, near Bingley, Yorkshire ; not now found there. Hermi- 
tage Glen and Powerscourt, Co. Wicklow ; near Youghal, Cork, 
Bantry, and in other places in Co. Cork ; Turk Waterfall, Cro- 
