CERASTIUM 91 



2. Ock. Marcham, Walker. Blewbury Downs, Bolton King. Cotliill. 



Frilford. Boar's Hill. Tubney. Pusey. Bagley. 



3. Pang. Bucklebuiy. Cold Ash Common. Oare Common. 



4. Kennet. Lower Bucklebury. Mortimer Common. Greenham 



and Crookham Commons. Wickham Heath. Ufton. 



5. Loddon. Windsor Park, Bolton King. Wellington College and 



Wokingham, Penny, in Journ. Boi. (1873) 138. Stubbing's 

 Heath. Farley Hill. Twyford. Sonning. Finchamj^stead. 

 Bracknell. Ascot. Sandhurst. Binfield, &c. 

 Var. GLAKDULosuM, Koch, Syn. Fl. Germ. 121 (1837), a more glan- 

 dular and a rather more slender form has been noticed near Bracknell. 

 Mortimer, and near Pusey. 



C. semidecandrum occurs in all the bordering counties. 



C. viscosum, Linn. Sp. PI. 437 (1753). Broad-leaved Mouse-ear Chickiveed. 

 C. glomeratum, Thuill, Fl. Par. ed. 2, 225 (1799). 



Top. Bot. 79. Syme, E. B. ii. 82, t. 221. Nyman, loB. Fl. Oxf. 51. 

 Native. Agrestal, &c. Walls, waste places, fields, heaths, grassy 

 jjaths in woods, &c. Common and generally distributed. A. or B- 

 April-September. 

 First record. C. viscosum, Mavor's Agr. Berks, 1809. 



Yar. APETALUM (Dumort, Comm. Bot. 47, 1822, as a species), is not 

 unfrequent in the ridings of dampish woods as in Wytham, Powder 

 Hill Copse, Pusey, Bagley, Wittenham, Oare Wood, Wickham, Buckle- 

 bury, Fence Wood, Hampstead Marshall, Aldermaston, Mortimer, 

 Ascot, Windsor Great Park, &c. 



A form with very broad leaves and compact flower-heads also occurs. 



C. viscosum is probably absent from a considerable area of the chalk 

 downs ; it occurs in all the bordering counties. 



C. vulg-atum, Linn. Fl. Suec. ii. 158 and Sp. PI. ed. 2, 627 (1762). 

 Narrow-leaved Mouse-ear Chickiveed. 



C. t)iviale, Link, Enum. Hort. Berol. i. 433 (1821). 



Top. Bot. 80. Syme, E. B. ii. 83, t. 222. Nyman, 108. Fl. Oxf. 51. 



Native. Pascual. Meadows, river-banks, stone walls, grassy chalk 

 downs and heaths. A common and widely distributed species, 

 occurring on the banks of the Thames near Old Windsor, and 

 ascending to Walbury Camp, 959 feet above sea-level. B. or P. 

 Jan. 26-October. 



First record. C. vulgatum, Mavors Agr. Berks, 1809. 



In Mr. Britten's Contributions Di*. Trimen records ' a peculiar form on 



the downs near Wantage, nearly C. holosteoides, Fr., but not quite.' The 



specimen is preserved in Herb. Brit. Mus., but I see no resemblance to 



C. liolosteoides. The petals of C. vulgatum vary a good deal in length. 



One form, which is found on walls of the Coralline Oolite about 



