ATIIYRIUM. ASl’LKNIUM. 
11 
Sax. rimdaris on Ben Lawcrs, Perthsliirc. Mr. W. Wilson. 
P.VIIL? S, 
\_Onoclea sensibilis is naturalized in one spot near Warrington.] 
Tribe III. Aspleniece. 
7 . Atiiyrium Roth . 
1. A. FiUx-fmnina (Both); frond lanceolate pinnate, pinnae 
linear acute regularly pinnate, pinnules linear-oblong deeply ser- 
rate or pinnatitid. — E. B. 145!) (bad), and A. irrifjuum Sin., E. B. 
21!)!). N. 257. — Fronds 1 — 5 or even 4 feet high. Midrib of the 
pinnules wavy ; lateral veins forked, the anterior branch bear- 
ing at about its middle the kidneyshajied sorus which at length 
becomes nearly round. — a. incisum ; fronds droojiing broadly 
lanceolate, pinnules not connected flat pinnatifid, lobes toothed. 
A. Filix-fcBmina Roth. P. incisum Ilolfm. Dark green. Sori 
distinct. — /3. molle ; fronds semi-erect ovate-lanceolate, pinnules 
connected by the wing of the midrib flat toothed. A. mo//e Roth, 
Light green. Sori distinct. Less divided than a. — y . convexum 
(Bab.); fronds semi-erect linear, jiinnules not connected narrow 
conve.Y with defle.xed margins toothed blunt. A. rhaticum Roth. 
Pale green. Sori confluent. — It is highly probable that these are 
distinct species. — Wet shady situations. P. VI. VII. 
[2. A. fontanum (Presl); frond linear-lanceolate bipinnate, 
pinnse oblong -ovate, pinnules obovate-cuneate with few deeji 
sharp teeth. — E. B.2024. — This plant does not associate well 
with the genus. — Formerly on Amersham church, Bucks. Found 
by Hudson “ above Wybourn in Westmoreland.” P.] E. ? 
8. Asplenium Linn. 
* Ultimate subdivisions with a distinct midvein. 
Asplenium Newm. 
1. A. lanceolatum (Huds.); fronds lanceolate doubly pinnate, 
pinnules ovate deeply and sharply toothed or lobed, sori short 
nearly marginal. — E. B. 240. N. 24!). — Fronds sometimes nearly 
linear and simply pinnate, always n,arrowed at the base. Sori 
short oblong, ultimately rather confluent into roundish masses. 
— Rocks and w'alls, rather rare. P. VI. — IX. E. 
2. A. Adiantum-nigrum (L.); fronds triangular attenuated 
twice or thrice pinnate, pinna; and pinnules triangular sharply 
toothed, sori elongated central. — E. B. 1!)50. N. 255. — Sori 2 or 
3 times as long as in the preceding, jilaced near the midrib and 
ultimately confluent in oblong masses often covering the whole 
under surface of the pinnule. — Rocks and walls. P. VI. — IX. 
Black Spleenwort. 
