Asplenium. ~] 
FERNS. 
47 
Syn.' — Asplenium trichomanes, Linn., Willd., Michx., Woodv., Bolt., Dicks., 
Ehrh., Liffhtf., Smith, Hook., With., Sprenrj., Huds. — Asplenium saxa- 
tile, Salisb., Gray. — Asplenium trichomanoides, Schkr., (not Michx .) — 
Asplenium melanocaulon, Willd., Pursh. — Trichomanes, Ray, Fuchs., 
Tillands., Bauh., Plum,., Park. — Phyllitis rotundifolia, Moench., Newm. 
Fig.— E. B. 570 .—Flo. Lon. 15 G.—Bolt. 13 .—Flo. Dan. 119.— Woodv. 201. 
— Ger. 1146. — Plum. t. B.f. 1. — Newm., p. 80. 
Des. — Fronds tufted, linear, pinnate, 2 to 4 inches high, dark 
green, very rigid, quite smooth, -with a purplish-black shining rachis, 
channelled in front. Pinnae from twenty to thirty pairs, opposite or 
alternate, (generally the former,) obtuse, crenate, of a round or oval 
form, very distinct from each other all the way up, and sessile, or 
very nearly so. Sori two to six on each pinna, placed transversely, 
very dark colored, finally confluent, often covering the whole under 
surface. ^ ^ 
Hab. — Common on rocks, old walls, &c., in most parts of the United King- 
dom ; not only on the mainland, but the Isles of Anglesea, Man, Wight, Sheppy, 
and the Channel Isles, yet by no means frequent in the N and NE. of Scotland. 
Geo. — Throughout Europe. In Jamaica. In Japan and other parts of Asia. 
Canada, Pennsylvania, and high mountains of Carolina. 
6.— ASPLENIUM VIRIDE. 
GREEN MAIDEN-HAIR SPLEENWORT. GREEN RIBBED SPLEENWORT. 
(Plate 4, fig. 6.) 
Cha. — F rond pinnate, linear. Pinnae roundish-deltoid, crenate. 
Rachis green. 
Syn. — Asplenium viride, Huds., Willd., Roth., Dicks., Ehrh., Bolt., Smith, 
Hook., With., Spreng., Galp., Light/., Gray, Newm. 
Fig. — E. B. 2257 .—Bolt. 14.— Flo. Dan. 1289 ,—Pluk. Phy. 89, /. 6— 
Newm. 78. 
Des. — Fronds numerous, pinnate, linear, from 3 to G inches high, 
of a very light green color. Pinnae petioled, alternate, the upper 
ones ovate, the lower roundly triangular, attached to the rachis by 
the centre of one of the sides, which is somewhat truncate, the other 
two sides being regularly and deeply crenate, sometimes doubly so. 
Rachis quite green, except at the lower part. Sori reddish brown, 
two to six on each pinna, confined to the middle of it, finally be- 
coming confluent, but even then not extending to the margin. 
This is immediately distinguished from the last by the lighter color of all its 
parts, its less spreading sori, and differently-shaped and alternate pinna; ; added 
to which, the pinnae on the lower part of the frond are generally distant, and 
those near the top of the frond crowded, while the whole is much more delicate 
and elegant. Sometimes the frond is divided into two, as represented in Bolton, 
t. 2, f. 3, when it *becomes the Trichomanes ramosum of authors ; but this 
branching is an accidental circumstance, and by no means constant ; it therefore 
