CRYPTOGAMIA. FILICES. Asplenium. 989 
Hook. FI. Land. 162— E. Bol. Wll—Fl. Dan. 60— Lob. Adv. 17. 2 , Ic. 1 . 
47. 1— Ger. Em. 1561. 8 — Bolt. fit. 8 — Trag. 537— Lon. 1. 224. 5— Ger. 
343 . 4 —Park. 1045. 8 —J. B. iii. 755. 2 . 
From two to five inches high. Leaves mostly in pairs; strap-spear-shaped, 
on long leaf-stalks rising from the root. With. Readily distinguished by 
its hi or rarely tri-fid, (by no means pinnatifid,) linear fronds; as well as 
by the crowded fructifications, which, in an old state, have so much the 
appearance of those of an Acrostichum, that the plant was by the older 
Botanists invariably arranged under that genus. Its nearest affinity is 
Asplenium Ruta-muraria. Hook. FI. Lond. E.) 
(Forked Spleenwort. A. septentrionale. Hull. Sm. Willd. HofFm. Sw. 
De Cand. Acrostichum septentrionale. Linn. Huds, Lightf. With, to Ed. 
vii. Dicks. Bolt. Clefts of rocks and old walls, chiefly in the northern 
division of this Island; and tops of mountains, as Carnedd Lewelyn, in 
Wales; on Ingleborough, Yorkshire; at Patterdale and Keswick, and 
above Ambleside, Westmoreland. Rocks in Edinburgh Park. Dr. Hope. 
The rock of Stenton, near Dunkeld. Mr. Arnott, in FI. Lond. Rocks on 
the southern side of Blackford Hill, Somersetshire. Mr. Brown. P. E.) 
A. alternifo'lium. Leafits wedge-shaped, alternate, notched at the 
extremity. 
( E. Bot. 2258. E.)— Jacq. Misc. 5. 2 — Breyn. Cent. 97. 
From three to five inches high. (An intermediate species between A. sep~ 
tentrionale and Ruta-muraria , though perfectly distinct from both. Sm. 
E-) 
Alternate-leaved Spleenwort. (A. alternifolium. Wulf. Dicks. Sm. 
Hook. A. germanicum. Weis. Willd. Hoffm. Ehrh. E.) First found 
in Britain by Mr. Dickson, on rocks in the South of Scotland. Linn. Tr. 
ii. p. 290. P. 
(4) Leaves doubly compound; divisions alternate. 
A. Ru'ta-mura'ria. Leafits wedge-shaped, finely scolloped. 
Kniph. Q—E. Bot. 150— Sheldr. 68— Bull. 195— Wale. — Cam. Epit. 785— 
FI. Dan. 190— Tourn. 317. 1— Bolt. 16— Blackw. 219—* Gars. 128. a .— 
Fuchs. 730— J. B. iii. 753— Lon. i. 221 . 1 and 2— Trag. 530. 2 —Dod . 
470— Lob. Ohs. 472. 1; Ic. i. 811. 1 —Ger. Em. 1144. 3 —Park. 1050. 4— 
H. Ox. xiv. 5. 22—Ger. 983 —Matth. 1041. 
(. Fronds three or four inches high, resembling Rue leaves. E.) Stem bare 
for near half its length. Fructifications in two or three rows, oil each 
the rib of the leaf. Bolt. The foliage at first sight has something of a 
Trefoil appearance. Smith very properly observes, that the Ferns can 
only be determined in their early state before the bursting of the mem¬ 
brane which covers the capsules, for in an advanced state the back of the 
leaf is covered with a confused mass of capsules, with hardly a vestige of 
their former disposition. He thinks this species may be best distinguished 
by the membrane always bursting towards an adjoining vein or nerve, 
never towards the edge of the leaf, unless when a vein is found on that 
side. See E. Bot. p. 150. 
White Maidenhair. Wall Rue. Tentwort. (Welsh: Dueg-redy - 
nen y muriau. Old walls and moist crevices of rocks. Southwold 
Church, Suffolk, Long Stratton Church, Norfolk. Mr. Woadward. Walls 
at Shirehampton, near Bristol; and about Bewdley. (In Anglesey; 
