360 FLORA OF OXFORDSHIRE. 
Var. A. converum,Newm. A. rheticum, Roth. A. erectum, Syme. 
5. Isis. Bruern Wood. 
ASPIDIUM. Sw. 
A. angulare, Kit. 
Syme, E. B. xii. 95. 1861. Nym. 865. 
Native. Sylvestral. Dry woods. Local. P. July, Aug. 
First record, H. Boswell, 1859. 
8. Swere. Hooknorton. 
4, Ray. Stow Wood, H. Bos./ 
6. Thame. Nuneham, H. Bos. 1859! Shotover. 
7. Thames. Stokenchurch Woods, Chequer’s Common. 
Berks. Powder Hill Copse, H. Bos. Bucks, Northants, Gloster, 
Warwick. 
It appears difficult to draw a line of separation between this and the two 
following ferns, so many intermediates occur. 
A. aculeatum, Sw. Prickly Shield Fern. 
Top. Bot. 513. Syme, E. B. xii. 92. 1860. Nym. 865. 
Native. Sylvestral, septal. Dry woods, hedge-banks, etc. Local. P. 
P. July, Aug. 
First record, Morison (Bobart), iii. p. 579, 1699. Filix mas aculeata, 
‘about Oxford.’ 
2. Ouse. Hethe. 
3. Swere. Hardwick Hill, Hanwell, Bees. Crouch Lane, A. Fr. 
4. Ray. Rousham, Rev. E. Fox. 
6. Thame. Shotover, H. Bos. ! 1884. 
7. Thames. Penley Hangings, Stokenchurch Woods. 
A. lobatum, Sw. Prickly Shield Fern. 
Comp. Cyb. 409. E. B. 1563. Nym. 865. Syme, E. B. 93. 
Native. Woods, hedges. Local and rare. P. July, Aug. 
First record, Sib. 1794. Polypodium lobatum, Huds. 
3. Swere. Hardwick Hill, Guill. 
5. Isis. Wilcot Woods, Sid. Cornbury Ponds and Quarry! T. West- 
combe. 
6. Thame. Shotover Plantations, Sib./ 1884. Tiddington, Hb. Be. 
A. Filix mas, Sw. Male Fern. Nephrodium, Rich. 
Top. Bot. 515. Syme, HE. B. xii. 57. 1850. Nym. 865. Lastrea, Pres. 
Native. Sylvestral, septal. Woods, hedges, etc. Common and 
generally distributed. P. June, July. 
First record, Sib. 1794. Polypodium Filia mas, L. 
Occurs in Christ Church Meadow ; probably planted. 
