661 



material or dynamic influence of the fovilla, conveyed through the medium of the 

 primary utricle or suspensor. 



" The paper was accompanied by a series of drawings representing the ovulum of 

 Tropseolum in the several stages of development described.'' — ^Proceedings of the Lin- 

 nean Society,^ February 1, 1842: p. 123. 



Art. CLVII. — List of the Cryptogamic Plants of Oxfordshire.^ 

 By Ph. B. Ayres, Esq., M.D. 



Tharae, May 18, 1843. 

 Sir, 



I inclose you a list of the Cryptogamic Flora of Oxford- 

 shire, as far as it has been at present examined, compiled from a ma- 

 nuscript list of Mr. Baxter's, with such additions as I have been able 

 to make. It will be seen that very little has been done towards form- 

 ing a complete list for the county, as most of the localities given are 

 in the immediate neighbourhood of Oxford, and the country towards 

 the northern extremity has had little attention paid to it. I have no 

 doubt that that part of the county would repay the investigation, since 

 in my own neighbourhood I have found two species, which Mr. 

 Berkeley has determined to be new to the British Flora. 



I am. Sir, 



Your obedient Servant, 



Ph. B. Ayres, M.D. 

 To the Editor of ' The Phytologist.' 



Phascum suhulalum. Shotovei" hill, Bag- Gymnostomum ovatum. Walls &c., com- 



ley wood, Baxter ; Thame and Sto- mon. 



kenchurch range, Z>r. ^7/res. truncatulmn. Banks &c., 



muticum. On a bank at the N.E. common. 



corner of Shotover hill, i?ax<er. ^.intermedium, 



cuspidatum. Banks, &c. rather Hook. Banks, Bagley wood, rare, 



common, Thame, Dr. Ayres. Baxter. 



Sphagnum obtusifolium. Bogs, common, pyriforme. Ditch-banks, 



Baxter. Thame, abundant. Dr. Ayres. 



squarrosum. Bogs, Shotover Tetraphis pellucida. Shotover plantations, 



hill. Sibthorp. 



acutifolium. Shotover hill, Splac/mum ampullaceum. On cuw- 



Bagley wood, Baxter ; Bates* Leys, dung, Shotover hill, very rare, Bax- 



Thame, Dr. Ayres. ter. 



* The list, as received from Dr. Ayres, contained also localities of the Ferns ; but 

 these, in accordance with our notice (Phylol.549), and in order that repetition may be 

 avoided, will be given in Mr. Newman's list of the Ferns of Oxfordshire. — Ed. 



