CRYPTOGAMIA-FILICES. Asplenium. 293 



scarcely a span high, with short smooth sialics of the same 

 shining purplish black as the midrib, which is cliannelled in 

 front, keeled at the back. Leajlets dark green, smooth^ nume- 

 rous, from thirty to sixty, nearly sessile, mostly opj)Osite, small, 

 roundish-ovate, bluntish, rarely pointed, unequally and slightly 

 crenate ; abrupt at the base, which is a little dilated, or point- 

 ed, at its upper edge. Masses six or eight on each leaflet, ob- 

 long, parallel to each other, but oblique with respect to the 

 midrib, towards which their whitish wavy-edged covers, each 

 originating from an obliquely transverse vein, open or separate, 

 exposing the plentiful brown capsules. 

 The leaflets in pare somewhat cut or jagged j in y more pointed. 

 Sometimes the midrib is divided, or branched. No medical 

 virtues are now attributed to this Fern, nor to any of its genus. 



2. A. viride. Green Maidenhair Spleen wort. 



Frond linear, pinnate ; leaflets roundish-ovate, somewhat 

 deltoid, crenate. Midrib flattened beneath. 



A. viride. Huds. 453. Willd. Sp. PL v. 5. 332. Ft. Br. 1127. 

 Engl. Bot. V. 32. t. 225". Hook. Scot. p. 2. 155. Bolt. Fil. 24. 

 t. 14. Roth Germ.v. 3. 56. Fl.Dan. t. 1289. Dicks. H. Sice, 

 fasc. 3. 18. Ehrh. Crypt. 71. 



A. n. 16P3 /3. Hall. Hist. v. 3. 10. 



Adiantum album. Cord. Hist. 172./. 1 ; same cut as is used for 

 the former species. 



13. Asplenium Trichomanes ramosum. Linn. Sp. PI. 1541. Bolt. 

 Fil. 25. t. 2./. 3. 



Trichomanes ramosum. Bank. Hist. v. 3. 747. f. Lhwyd in Raii 

 Sijn.ed. 2. 4G. ed. 3. 119. 



r. minus et tenerius. Bauh. Pin. 356. Moris, sect. 14. t.3. f. 1 1. 



T. minus, bifurcate pediculo, tenuioribus foliis dentatis. Moris. 

 V. 3.591. 



On rocks, and old buildings, in mountainous countries. 



On the loftiest rocks of Carnarvonshire very common, whei'e the 

 former is not to be found ; also on the limestone rocks of Cra- 

 ven, Yorkshire. Dr. Richardson. On moist rocks in the moun- 

 tainous parts of Yorkshire and Westmoreland. Hudson. On In- 

 gleborough. Mr. Crovje. In the Highlands of Scotland in many 

 places. Lightfoot. Dickson. Hooker. 



Perennial. June, July. 



Of the size and habit of the foregoing, but of a brighter green, 

 with a pale or green rib, which is not very unfrequently divided, 

 even as low as the naked part of the stalk, into two branches, 

 .making the Trichomanes ramosum of J.Bauhin. It is naturally 

 however unbranched, though still ^. Trichomanes ramosum of 

 Linneeus ; a bad name, to which Hudson's viride is vastly pre- 



