CORRIGENDA ET ADDENDA. 



At page 17, Allosorus Crispus. Add to the English localities, Shropshire, on the 

 Titterstone Clee Hill. The first, second, and third fronds of this species, figured at page 

 1 8, are from the same root : the first is the fertile frond, which is produced earliest in the 

 spring; the second, with oak-leaved pinnulae, is next thrown up, and the third is the 

 production of summer, when the plant is weakened hy its previous produce : the 

 fourth frond is a variety. 



At page 21, Polypodium vulgare. The pinnce are in several instances described 

 as piymulce. 



At page 29, Woodsia Ilvensis. The second name, W. Hyperborea, should have 

 been printed in italics: as it now stands, it appears that I intended to employ both 

 the names, which was not the case. I should also have added that Woodsia is recorded 

 by Sir W. J. Hooker, on the authority of Mr. James Backhouse, as having occurred 

 in England. 



At page 45, Lastr/EA Thelypteris. The following localities should be added. 

 England. — Norfolk, St. Faith's, Newton bogs; Essex, Little Baddow Common, near 

 Chelmsford ; Kent, at North Cray, by the side of a rivulet going down the lane 

 towards the church, and in Waterdown Forest, near Tunbridge Wells ; Surrey, below' 

 Leith Hill, on a bog near Coal Harboixr ; Sussex, in Ashdown Forest near Maresfield, 

 Albourne among the alders near the sandpit, bog at Bechley Forge, near Battle, and 

 at Amberley Wildbrook. Ireland. — County Mayo, on the banks of Lough Carra. ■ 



At page 48, Lastr^ea Oreopteris. Mr. Pamplin has given me, under the name 

 Thelypteris, a variety of Oreopteris, with the margins of the pinnulae convolute, and 

 the lateral veins mostly forked ; he found it in the marsh through which the road passes be- 

 tween Edridge and Tunbridge Wells : I have found the same variety in Epping Forest. 



At page 65, Athyrium Filix-femina. I have just received a packet from Mr 

 C. C. Babington, containing two beautiful varieties of this fern. 1st. FromTrevenna,' 

 in Cornwall, with the division of the pinnae linear or laciniate, with a vein running into 

 each : it is of small size, scarcely four inches in length, and has no seed. 2d. From 

 Stoke Fleming, in Devonshire, with the pinnulae pinnate, and their divisions toothed' 



I shall feel extremely obliged to any of my readers who can send to my publishers' 

 directed for me, living British specimens of Adiantum Capillus Veneris ; Polypodium 

 calcareum (of Smith); Woodsia; Polystichum Lonchitis ; Lastraea cristata and L, 

 rigida; Trichomanes speciosum or Botrychium lunaria. 



