BRITISH EUPHKASl.E 17 



When growing the colouring of the plant is noteworthy, the 

 stem being dark purple clothed with hoarj pubescence and the foliage 

 dull grey-green. Thus young plants are easily distinguished at sight 

 from JE. stricta and E. borealis. 



Dr. Drabble in Journ. Bot. liv. p. 73 (1916), has rendered a 

 service to students of the genus by pointing out that slightly 

 hairy forms of E. nemorosa are sometimes taken for E. curta var. 

 ylcthrescens, and has separated these under the name of var. ciliata. 

 When well grown this species is easily recognized, but is extremely 

 variable in the amount of branching, length of internodes of the stem 

 and fruiting-spike, and in the size of the leaves, bracts and flowers. 

 All these forms may be found growing together, in considerable 

 numbers, and it is then evident that, although so vai'iable in form, 

 they are all essentially the same, and can he distinguished at a glance 

 from any other species. This variability is doubtless due, partly to 

 the amount of nutriment that the host-plant is capable of providing, 

 and partly to the space for development allowed by the surrounding^ 

 vegetation. 



As forms of E. upmorosa have been taken for E. stricta, E. curta 

 and E. cjracitis, it may be well to give an extended Hst of localities 

 for the typical plant, and also for those forms which have been or are 

 liable to be misnamed. 



England. — N. Somerset. Slope over the Caves in Cheddar 

 Gorge, July 1900, J. W. White, fide F. T. Small plants, 7-16 cm. 

 high. — Grassy lane, Kowberrow^ near Churchill, Sept. 1000, ^f/e F. T. 

 — The Mineries on Mendip, Aug. 1905, and Wookey Hole, Mendip, 

 Aug. 1907. Some of these are tyjncal and others have unusually 

 large spreading bracts 11 mm. long, and large flowers ; resembling 

 E. hrevipila but not glandular, and the branching that of E. nemorosa, 

 — Limestone ridge from Failand to Cadbury Camp, July, Aug. 1916 j 

 on roadsides and in rough pastures, together with a glandular 

 form which I name E. campestris var. neglecta ; this is so similar 

 to E. nemorosa that only the glands distinguish it. — Queen Charl- 

 ton, Sept. 1901. Some of the plants are setulose and come under 

 the var. ciliata Drabble. — Koadside above Bathampton. Stem not 

 tall, much branched, internodes short, flowers large. This recalls. 

 E. Kerneri, but the leaves are larger and the colouring different. — 

 Wilts. Chalk downs, Boreham near Warminster, Sept. 1914. With 

 the typical plant grow some copiously and compactly branched plants, 

 not exceeding 10 cm. high, with small leaves and bracts and more 

 brightly coloured floweis. These may form a transition to E. Kerneri. 

 — I. Wight. Apesdown, Aug. 1916. Approaching var. ciliata. — 

 N. Hants. Odiham, on bank above Chalk-pit, Sept. 1908, C. E. 

 Palmer, as E. stricta. '' E. nemorosa,'' E. S. 31. (B. E. C). These 

 vary in the same way as the plants growing on chalk at Boreham, 

 Wilts. See above. — W. Sussex. Koadside, Colgate, July 1900, 

 J. TV. White, fide F. T. Near Cross-in-Hand, Aug. 1906, W. A. 

 Vice. Stems tall, stout, witli short slender branches throughout 

 their length. This form is not uncommon growing with the ordinary 

 type. — Surrey. Haslemere on railwaj^-banks, Aug. 1891', E. S. M., 

 as " ? E. nemorosa.''' Leaves small, but typical E. nemorosa. — 



