322 CRYPTOGAMIA— FILICES. Woodsia. 



Masses of capsules roundish, convex, dispersed on the veins 

 at the back of the frond. Cover membranous and sHghtly 

 cup-shaped at the base, under each mass ; the margin 

 in many deep, capillary, obscurely jointed, taper-pointed 

 segments, incurved over the capsides,Tpevxaax\eni. Capsules 

 several, stalked, crowded, without any prominent com- 

 mon receptacle, roundish-obovate, bound by a vertical 

 jointed ring, and bursting (as it seems) irregularly at the 

 sides. iS^^rfs numerous, kidney-shaped. 



A genus of smsW. ferns, of which two species only have hi- 

 therto been discovered. These have been generally con- 

 founded either with Acrostichum or Polypodium. Their 

 700/5 are fibrous. Fronds tufted, erect, stalked, pinnate, 

 pinnatifid, clothed with simple hairs, or naiTow pointed 

 scales. 



The name, given by Mr. Brown, justly commemorates Mr. 

 Joseph Woods, F.L.S., an excellent practical English 

 botanist, who first illustrated our native species of Mosa ,• 

 see vol. 2. 3^69, and Trans, of the Linn. Sac. v. 12. 173. 



1. W. Uvensis. Oblong Woodsia. 



Leaflets oblong, deeply pinnatifid, with oblong segments. 



W. ilvensis. Br. Tr. of Linn. Soc. v.W. 1 73. 



Acrostichum ilvense. Linn. Sp. Pled. 1. 1071. erf. 2. 1528. FL 



Suec. ed. 2. 37 1 . Fl. Dan. t.39l. Ehrh. Crypt. 191. 

 Polypodium ilvense. Sw. Syn. Fil. 39. fVilld. Sp. PL v.5. 198. 



" Schkuhr Crypt. U.t. 19." 

 P. Marantae. Hoffm. Germ, v.2.5 ; omitting the syn. 

 Lonchitis aspera ilvensis. Dalech. Hist. 1221./. 

 Filix minor ilvensis, alls asplenii. Moris, sect. \4. t. 3. f.22; but 



not the descr. v. 3. 576. n. 22. 

 Nephrodium lanosum. Michaux Boreal.-Amer. v. 2. 270 (not 198). 



On the authority of Mr. Brown. 



On alpine rocks in Wales and the North of England. 



Upon Glyder Vawr, near Llyn y Cwm, North Wales. Mr. W. 

 Wilson. At the foot of the basaltic rocks, on the Durham side 

 of the river Tees, about two hundred yards below Caldron Snout. 

 Mr. James Backhouse. Near the summit of some very bold 

 basaltic rocks, called Falcon Glints, about ten miles west of 

 Middleton, Teesdale. Mr. S. Hailstone. 



Perennial. Jrdy — September. 



Mr. Wilson first determined this species when he gathered it in 

 Wales, in 1824 and 1825; our English specimens having been 

 sent under the name of the following ; a very excusable error, 



