EUPHRASIA VIGURSII 219 



in N. Scotland have found it pretty brightly coloured, but I never 

 yet came across flowers of brevipila with this deep violet-blue tint. 

 . . . E. Rostkoviana I never yet found with decidedly blue flowers ; 

 they are normally whitish. The variation of outline in the leaves of 

 your plant and Dr. Vigurs's is certainly no greater than in those of 

 authentic curta var. glabrescens ; I think that small early-flowering 

 specimens tend to have them blunter than those of more developed 

 late summer and early autumn." 



I propose naming the new plant after Dr. C. C. Vigurs, who 

 has long been an ardent student of British Euphrasia, and to 

 whom, inter alia, we are indebted for the discovery of Fumaria 

 occidentalis Pugsley. 



Euphrasia Vigursii, sp.n. Stem erect or slightly ascending, 

 simple or branched from or slightly above the middle, 5-25 cm. in 

 height ; branches opposite, ascending, rarely compound, covered 

 with crisped, jointed, recurved pubescence, and (in the upper part) 

 numerous more or less straight gland-tipped hairs. Leaves in 

 early-flowering plants greyish-green, plicate-striate, oval-ovate, with 

 3-4 rounded teeth on either side ; in late-flowering plants ovate, 

 with 3-4 acute but not awned teeth on either side ; all abundantly 

 furnished with long gland-tipped hairs and numerous white set®. 

 Bracts subopposite, or lower ones rarely opposite, upper about as 

 broad as long with 4-5 triangular acute teeth on either side ; under 

 surface closely set with gland-tipped hairs. Spike at first short, 

 ultimately, in typical specimens, lengthening to 15-20 cm. Calyx 

 not enlarged in fruit, like the rest of the foliage densely set with 

 gland-tipped hairs ; teeth narrow-triangular, acute. Corolla rarely 

 exceeding 8 mm., rich purplish violet with darker lines and three 

 yellow spots on the lower lip, tube ultimately longer than the 

 calyx. Capsule elliptical, about twice as long as broad, falling 

 short of the calyx-teeth, emarginate, ciliate. 



Hub. On killas or clay-slate in Cornwall and Devon. Corn- 

 wall (v.-c. 1): Exposed heathy slope near the sea at Porth Towan ; 

 Connor Downs. Goonhavern Moor and other places in Perranzabuloe 

 parish, W. Tresidder. Devon (v.-c. 3) : Boborough Downs, near 

 Yelverton, C. C. Vigurs. 



E. Vigursii differs from E. Rostkoviana by the more slender 

 character of all its parts, its less-branched stem, smallerand less 

 hairy leaves, shorter corolla, which is of a striking purplish violet 

 instead of white or lilac ; and its relatively shorter capsule. From 

 E. brevipila it may be distinguished by its longer and greater 

 abundance of gland-tipped hairs, by the teeth of its leaves being 

 fewer and never awned, by its much deeper coloured corolla, the 

 tube of which lengthens after the flower opens, and by its shorter 

 and more distinctly emarginate capsule. 



I take this opportunity of expressing my gratitude to Prof, 

 von Wettstein, Prof. Hans Schinz, and the Rev. E. S. Marshall for 

 their kind assistance. 



Explanation of Plate 486. — 1 and 2, Early-flowering specimens of 

 Euphrasia Vigur$ii y natural size ; 3, Corolla, natural size ; 4, Same, x 6 ; 



k2 



