90 ALSINACEAE 



CERASTIUM, Linn. Gen. n. 518 (Mijosotis, Tournefort, t. 126. 

 C. quaternellum, Fenzl. in Verb. Alsineen, 56 (1833). Upright Pearhcort. 

 C. eredum, Coss. and Germ. Fl. Env. Paris, 39 (i845\ Sagina erecta, 



Linn. Sp. PI. 128 (1753). Moenchia erecta, Fl. Wett. i. 219. M. qua- 



ferneZ/a, Ehrh. Beitr. ii. 180 (1788^ 

 Top. Bot. 68. Syme, E. B. ii. 77, t. 217. Nyman, iii. Baxt. t. 460. 



Fl. Oxf. 52. 

 Native. Ericetal. Confined to heathy commons where it is local. 



A, April-May. ) 



First record. Moenchia erecta, Sm., Mr. J. G. Baker in Britf. Contr. 1871, 



3. Pang. Abundant on Bucklebury Common. 



4. Kennet. Thatcham, Jackson. Wickham Heath. Greenham 



Common. Mortimer. Mortimer West Common. Snelsmore. 

 Lower Bucklebury Common. 



5. Loddon. Ascot Racecourse, Baker. Well. Coll. List. Windsor 



Park, Bolton King. Near Virginia Water. Near the railway 

 between Bracknell and Ascot. 



Probably this species occurs more frequently than the foregoing 

 records show, but, being an early-flowering annual, it is very easily 

 overlooked. After flowering the plant dries up and becomes even less 

 conspicuous, and it was in this condition that I first found it on 

 Greenham Common. Not recorded for the Isis or Ock districts, but 

 may be found in the heathy portions of Wytham or Tubney. 



This plant was called Moenchia quaternella in the Flora of Oxfordshire, 

 and I think it is well entitled to the generic distinction which 

 Mr. Williams claims for it ; of the counties bordering Berkshire it is 

 recorded for all except East Gloucestershire, but it has not been seen 

 by me in Oxfordshire ; it occurs by Virginia Water in Surrey, at 

 Dropmore in Bucks, and at Silchester in Hants, in each case near to 

 the county border. 



[C. puMiLUM, Curt, n. Lend, fasc. vi. t. 30 (1798). Sj'me, E. B. ii. 79, t. 219. 

 M. Oxf. 52. 

 Occurs in Glou.cestersliire, Wilts, Surrey, and the Isle of Wight.] 



[C. TETRANDRUM, Curt. Fl. Loud. vi. 31 (1798). Syme, E. B. ii. 78, t. 218. 

 Is reported from Surrey, South Hants, and West Gloucestershire.] 



C. semidecandrum, Linn. Sp, PI. 438 (1753). Least Mouse-ear Chickweed. 



Top. Bot. 80. Syme, E. B, ii. 81, t. 220. Nyman, no, Fl. Oxf. 52. 



Native. Glareal. Walls, dry fields, heaths, &c. Local. A. March- 

 June. 



First record. Messrs. H. C. Watson and H. Boswell in Britt. Contr. 

 187 1. Unlocalized. 

 1. Isis. Carswell, Miss M. Niven. Wytham. Besilsleigh. 



