BLUCllNUM. TRICUOMANKS. 
415 
Tribe IV. Adiantarice. 
11. Bleciinum Linn. 
1. B. horeale (S\v.); barren fronds pcctinate-pinnatifid with 
broadly-linear rather obtuse pinme, fertile frond j)innate ; pinine 
linear aeute. — E. B. 115!1. Lomaria Spieant N. 8i). — Each lateral 
nerve of the fertile pinnaj extending half-way to the margin and 
then turning at right angles and proceeding up the j)inna until 
it reaches the next nerve. Thecae attached in a continuous row 
to the longitudinal portions of the combined lateral nerves. Rather 
a Blecitnum than Lomaria. Stony and heathy places. P. VII. 
12. Pteris 
I. P. aquiliiia (L.); fronds tripartite, branches bipinnate, pin- 
nules linear-lanceolate the lower ones {)innatifid, segments oblong 
obtuse. — E. B. 1679. N. 93. Eupteris Nevvm. (Ph\tol. ii. 2/8). 
— Fronds annual, 1 — 5 feet high, very much divided with spread- 
ing branches. Thecae attached to the marginal vein, lying uj)ou 
a fine membrane and covered by the membranous continuation 
of the epidermis. A transverse section of the stipes presents a 
figure resembling the imperial eagle. — Woods and heaths. P. 
VII. Brakes or Bracken. 
13. Adiantum Linn. Maiden-hair. 
1. A. Capillus- Veneris (L.); frond irregular, branches and 
roumlish-wedgeshaped lobed thin pinnules alternate, lobes of the 
fertile pinnules terminated by a transversely Unear-oblong re- 
Hexed lobe covering several roundish sori, sterile lobes ser- 
rated. — E. B. I5G4. N. 83. — Rhizoma blackish, shaggy. Fronds 
6 — 12 in. high. Stipes and rachis slender, nearly black. Pin- 
nules not jointed to the partial stalks. — Damp rocks near the 
sea. P. V.— IX. 
Subord. II. Hrjmenophyllacece. Tr. V. Hijmenophyllete. 
14. Trichomanes Linn. 
1. T. radicans (Sw.); fronds 3 or 4 times pinnatifid glabrous, 
segments uniform linear, involucres solitary in the axils of the 
upper segments, seta at first included idtimately very prominent. 
— E. B. 1417. T. speciosum Willd., N. 305. — The frond in fact 
consists of hard why branched ribs each furnished throughout 
with a rather membranous wing. Rhizoma black, downy, very long. 
Fronds rather triangular, very much divided, 4 — 8 in. long. — In- 
volucres scarcely winged. — jS. Andrewsii (Newm.); fronds lanceo- 
late, involucres winged. N. 315, — Our plant is a form of T. radi- 
