390 CRYPTOGAMIA FERNS. [CL. XXIV. 



polished, with a few scales at the base. Perennial : bears fruit in June 

 and July : grows on wet shady rocks and in stony places: common, 

 especially in Scotland. Eug. Bot. vol. xxiii. pi. 1587. Eng. Fl. vol. iv. 

 p. 299. 1480. 



2. C. dentdta. Toothed Bladder-fern. Frond between oblong- and 

 lance-shaped, twice pinnate ; leaflets egg-shaped, obtuse, pinnatifid ; the 



segments oblong, obtuse, toothed; partial stalks bordered. Fronds 



from four to ten inches high. Perennial : bears fruit in July : grows in 

 the clefts of rocks, in Wales and the Highlands of Scotland. Eng. Bot. 

 vol. xxiii. pi. 1588. Eng. Ft. vol. iv. p. 155. A common variety of this 

 plant, with broader fronds, between oblong and egg-shaped, has been 

 described as the C. angusttita, Deeply-cut Mountain Bladder-fern. Eng, 

 Fl. vol. iv.p. 301. 1481. 



6. ASPLE'NIUM. SPLEENWORT. 



Sori linear, straight, parallel, scattered obliquely over the back 

 of the fronds, between the central rib of each leaflet or lobe, and 

 the next rib or vein. Cover membranous, continuous, straight, 

 linear, arising from a vein, and opening at the opposite margin, 

 towards the central rib or vein. Capsules numerous, globular, 

 stalked, one-celled, two-valved, with a jointed ring. Name from 

 a, without, and splen, the spleen. 465. 



1. A, Trichamanes. Common Maidenhair Spleenwort. Frond linear, 

 pinnate; leaflets broadly oblong, or roundish, crenate ; stem and shaft 



coloured, shining, keeled beneath. Fronds from four to eight inches 



high, with a brown stem and shaft, and dark-green leaflets. Perennial : 

 bears fruit from May to December : grows on shady rocks and walls : 

 common. Eng. Bot. vol. viii. pi. 576. Eng. Fl. vol. iv. p. 305. 1482. 



2. A. viride. Green Maidenhair Spleenwort. Frond linear, pinnate ; 

 leaflets obliquely egg-shaped, somewhat acute, widely and obtusely 

 serrate ; shaft keeled beneath. Fronds about five inches long, bright- 

 green : stalk reddish-brown : shaft green. Perennial : bears fruit in 

 June and July : grows on rocks, in the Highlands of Scotland, the north 

 of England and Wales: common. Eng. Bot. vol. xxxii. pi. 2257. Eng. 

 Ft. vol. iv. p. 306. 1483. 



3. A. marinum. Sea Spleenwort. Frond lance-shaped, pinnate; leaf- 

 lets obliquely egg-shaped, very obtuse, obtusely crenate ; the shaft co- 

 loured along the back. Frond about eight inches high, rather stout, 



firm, dark-green: stem and the back of the shaft dark-brown. Peren- 

 nial : bears fruit in June and July: grows on rocks along the coast : 

 common in Scotland. Eng, Bot, vol. vi. pi. 392. Eng. Fl. vol. iv. p. 307. 



1484. 



4. A. Ruta-muriiria. Wall-rue Spleenwort. Frond alternately twice 

 compound; leaflets broadly diamond-shaped, notched on the two upper 



edges. Fronds from two to four inches high. Perennial : bears fruit 



from June to October : grows on rocks and old walls : common. Eng. 

 Bot. vol. iii. pi. 150. Eng. Ft. vol. iv. p. 309. 1485. 



5. A. alter mfiilinm. Alternate-leaved Spleenwort. Frond pinnate ; leaf- 

 lets alternate, wedge-shaped, notched at the end. Fronds from three 



to six inches high, with brown shining stalks. Perennial: bears fruit 

 from June to October : grows on rocks, near Kelso and Perth. Fronds 



