BLECHNTTM. TRICHOMANES. 
429 
Tribe IV. Adiantece. 
12. Blech'ntjm Linn. Hard-Fern. 
1. B. horedle (Sw.); barren fronds pinnatifid vritli broadly- 
lineai- rather blunt piunre, fertile fi-ond pinnate with linear 
acute pinn?e. — E. B. 1159. Loniaria Spieant X. 89. — Each 
lateral vein of the fertile pinnne extend? half-way to the edge, 
then turns at right angles and prot-eeds up the pinna until it 
reaches the next vein. Capsules attached in a continuous row 
to the longitudinal portions of the combined lateral veins. — 
Stony and heathy places. P. \^l. E. S. I. 
13. Pte'ris Linn. Brakes. 
1. P. aquiUna (L.) ; fronds tripartite, branches bipinnate, pin- 
nules linear-lanceolate the lower ones usually pinnatifid, seg- 
ments oblong blunt. — E. B. 1679. N. 9.3. Eupteris NewTn. — 
Fronds annual, 1 — 5 feet high, very much divided, with spread- 
ing branches. Capsules attached to the marginal vein, Ijing 
upon a fine membrane and covered by the membranous continua- 
tion of the epidermis. Inferior pinnules pinnatifid or sinuate or 
entire.— Woods and heaths. P. VII. E. S. I. 
14. Adian'tttm Linn. Maiden-hair. 
1. A. Capillm-Vcn'eris (L.) ; fi-ond irregular, branches and 
roundish-wedgeshaped lobed thin pinnules alternate, lobes of the 
fertile pinnules tei-minated by a transversely linear-oblong re- 
tiexed lobe covering several roundish clusters, sterile lobes ser- 
rate. — E. B. 1564. X. 8:3. — Ehizome blackish, shaggy. Fronds 
6 — 12 in. high. Stipe and rachis slender, nearly black. Pin- 
nules not jointed to the partial stalks. — Damp rocks near the 
sea. P. v.— IX. E. I. 
Tribe V. Hymenophyllece. 
15. TRiCHOM'AjfES lAnn. 
1. T. radicans (Sw.) ; fronds 3 or 4 times pinnatifid glabrous, 
segments unifoi-m linear, involucres solitary in the axils of the 
upper segments, receptacle at first included ultimately veiy pro- 
minent. — E. B. 1417. T. spedosum Willd., N. 30o. — Fronds 
rather ti-iangular, veiy much divided, 4 — 8 in. long, foi-med of 
hard wiiy branched ribs each with a rather membranous wing. 
Ehizome black, downy, very long. Involucres scarcely ■winged. 
— The form called Andrewsii has lanceolate fi-onds and -winged 
involucres. N. 315. — Very damp shady places, rare. Formerly 
at BeUbank, Yorkshire, from whence I have an old specimen 
