LATHRAEA 387 



[O. Hklkerae, Duby, Bot. Gall. 350, is given in the Wellington Coll. List, bnt 

 this is either an error of identification, or it is not from a Berkshire locality. 

 It is recorded from the Isle of Wight, Wilts, and W. Grloucestershire.] 



O. Trifolii-pratensis. F. Schultz, in Ann. Gew. Eegensb. v. (1830) 500. 



0. minor, Sutton, in Linn. See. Trans, iv. (1798) 179, and Sm. E. B. 

 t. 422 (1797), not of Thunberg, Prod. Fl. Capensis, 97 (1794). 



Top. Bot. 299. Syme, E. B. vi. 199, t. 10 r6. Nyman, 562. Fl, Oxf. 223. 

 Native. Agrestal. Parasitical on Clover, &c. Locally common. A. 



June -October. 

 First record. 0. minor, in a clover field near Buckland, Dr. Williams 



[Prof, of Botany in Oxford], in Purt. Midi. Fl. App. 56, 1821. 



1. Isis. Buckland, not rare, Dr. Williams' MS. 1820. Longwortli. 



2. Ock. Marc-liam, Walker, as 0. Hederae. Hinksey Hill, Boswell. 



Between Bagley Wood and Sandford, Laicson, in Herb. Oxf. Fril- 

 ford. Col hill. Pusey. Near Wallingford. Kingston Bagpuze. 

 Didcot. Southmoor. Shippon. 



3. Pang, Moulsford. Near Hermitage, Near Bucklebury. Parley. 



Near Marlstone House. Pnngbourn. Fields near Langley Hall, 



4. Kennet. Common in Clover field'^, Russel's Cat. Mortimer, 



Tvfnail. Wickham, Mrs. Baison. Theale, Tufnail. Padvvorth. 

 Newbury. Greenham. Kintbury. Brimpton. 



5. Loddon, In a clover field near Cookham through which the 



footpath leads to Great Marlow, Hurst MSS. as 0. caerulea. In 

 the Common field opposite Bisham Wood. In a field above 

 Cookham, MiU. Common about Park Place, Stanton. Welling- 

 ton College, Penny. Windsor, Dijer. Bi>>ham, Chandler. Maiden- 

 head. Wargrave. Hurley, Sonning, Arborfield, Barkham, 

 Yar. FLAVESCEKS? 0. minor, var, Jlavescens, Gren. & Godr. Fl Fr, 11. 

 641. I see no other difference than colour in our specimens. Near 

 Langley on Crepis virens. At Didcot on Daucus Carota. 



'A form which occurs . . . near Pangbourne is a much larger plant 

 than the ordinary 0. minor, often two feet high, with the corolla more 

 curved, the curvature greatest near the middle ; the lips much longer 

 in proportion, and the middle segment of the lower lip conspicuously 

 larger than the others,' Syme, E. B. vi. 200. A specimen from 

 E. Forster is in Herb. Brit. Mus. 



Although usually occurring on Clover, I have seen 0. Trifolii-pratensis 

 on Crepis virens at Moulsford and near Oarebury, and on Cnicus arvensis at 

 Brimpton, 



O.Trifolium-pratensis is recorded for all the bordering counties. 



LATHRAEA, Linn. Gen. n. 661 {Clandestina, Tourn. Inst, t 424). 

 Ii. Squamaria, Linn. Sp. PI. 606 (1753). Toothwort. 

 Squamaritty Lonicerus. 



C C 2 



