FLORA OF CAMBRIDGESHIRE. 27 



CISTACEJE. 



Helianthemum Gaert. 



1. H. vulga're Gaert. Rock-rose. 



Chamcecistus, B. C. 31. II. vulgar e flore luteo, M. M. 93. 

 Cistus Helianthemum, M. PL 12. Belli. 216. 



Banks on a chalky soil. P. July to September. 



1. Gogmagog Hills. Fulbourn. Linton. Bartlow. Hil- 

 dersham. Fleam Dyke. Balsham. Hinton. Shuckburgh 

 Castle, Newmarket Heath. Burrough-Green. Six-mile-Bot- 

 tom. — 2. Bran Ditch near Heydon Grange, but in this 

 county. Whittlesford. Kneesworth. By Newmarket Road, 

 Boyston; D. B. Odsey; H. R Shepreth; N. W. Triplow; 

 J. M. — 3. Kingston; N. Qamlingay Heath; J. M. — 5. 

 Devil's Ditch. Chippenham. Newmarket. — 6. Eaddenham; 

 J. M. 



710 LAC EM 



YfoLA Linn. 



1. V. odorata Linn. Sweet Violet. 



V. nigra seu purpurea and V. martia alba odora, B. C. 

 176. V. martia officinarum and V. martia alba, M. M. 97. 

 V. odorata, M. PI. 20. Belh. 92. 



Groves and hedge-banks. P. March, April. 



Common in the (1) Cambridge, (2) Boyston, (3) Wim- 

 pole, and (4) Cottenham Districts. — 5. Chippenham.— 8. 

 Wisbech; A. P. 



2. V. hirta Linn. 



V. martia hirsuta inodora, B. Fasc. Stirp. Brit. 21. 

 7. hirta, Lyons, 49. Belh. 92. 

 First noticed by Mr Dale. 



