6 14 EQUISETACEAE 



BOTRYCHIUM, Swartz in Schrad. Journ. ii. (1800) no. 



B. Iiunaria, Swartz, 1. c. in (1800). Moonwort. 

 Osmunda Lunaria, Linn. Sp. PI. 1064 (1753), p. p. 



Top. Bot. 523. Syme, E. B. xii. 24, t. 1837. Nyman, 870. Fl.Oxf. 363, 



Native. Ericetal. Dry grassy pastures, heaths. Very rare. P. May- 

 July. 



First record. Lunaria minor, Small Moonwort. In montosis et ericetis. 

 In several places near Oxford, and Lunaria minor ramosa, three 

 miles from Oxford near the Blind-Pinnocks, Merretf, Pinax, 73, 1666. 



1. Isis. Near the Blind-Pinnocks [which are near Cuninor], Merreit. 



2. Oek. In Radley Park. 



5. Loddon. In the grounds of Wellington College, Penny. 

 Botrychium Lunaria is recorded for all the bordering counties except 

 Buckinghamshire, but it is very rare in Oxfordshire. 



EQUISETACEAE, Rich, in Michx. El. Bor. Am. 



ii. 281 (1803). 



EQUISETUM, Linn. Gen. n. 1033 ^Tournefort, Inst. t. 307). 

 E. maximum, Lam. Fl. Fr. i. 7 (1778), auct. var. Great Horsetail. 



E. Telmateia, Ehrh. in Hann. Mag. 1783, 287, the name adopted by 

 Milde and Rabenhorst. E. Jluviatile, Sm. E. B. t. 2022, Fl. Brit. 

 1 104 (1804), not of Linn. 



Top. Bot. 531. Syme, E. B. xii. 150, 1. 1888. Nyman, 859. Fl. Oxf. 355. 



Native. Sylvestral, &c. Wet shady places, swampy woods, hedges, 

 &c. Locally common, but absent from considerable areas. It is 

 usually to be met with at the junction of a pervious with an im- 

 pervious stratum, as of the Coralline Oolite with the Oxford Clay, 

 and of the Greensand with the Kimeridge Clay. P. March- 

 April. 



First record. E. Jluviatile. Between Greenham Common andThatcham, 

 Russell's Cat. 1839. 



1. Isis. Near Cumnor. Wytham Woods. MerleyWood. Buscot. 



Near Faringdon. 



2. Ock. The Butts, South Hinksey, Whitwdl. Chawley Hurst. 



Ferry Hinksey. Boar's Hill. 



3. Pang. Oare. 



4. Kennet. Greenham Common and Thatcham, Russell. Wood near 



Snelsmore Common, W. M. Rogers. Newbury. 



5. Loddon. Windsor Park. Bowsey Hill. 



Var. SEROTiNUM (A. Bi-. in Sill. Amer. Journ. xlvi. (1844) 84, sub 

 E. Telmateia], in which the fertile stem resembles the barren one, 

 occurred near South Hinksey in 1893. In dry seasons, as 1894, some 



