170 THE JOURNAL OF BOTANY 
erect hairs, equally 2-celled, 1-2 mm. long, 0-8 mm. broad; style 
slender, glabrous below, puberulous on the upper part, viscid and 
base; minutely puberulous below, towards the apex pilose with 
rather long erect or suberect hairs, loculicidally bi-valved, equalling 
or a little shorter than the calyx, 3-5-4‘6 mm. long, about 1:5— 
16 mm. broad; seeds pendulous, about four in each cell of the 
capsule or fewer, ovoid-oblong, glabrous, marked with about twelve 
elevated longitudinal ribs and with drab or dusky-brown inter- 
slightly curved, subterete, whitish, 0°9 mm. long, 0:3 mm. broad ; 
cotyledons 2, about as broad as long; radicle nearly as broad as 
the cotyledons. 
25 per cent. solution of chloral-hydrate, the convolutions mostly 
isappear; one grain, measured by means of a micrometer, was 
ong. 
_ Accompanying the yellow-flowered Euphrasia, as described 
above, there grew in greater abundance specimens having whitish 
or pale-purplish or purplish flowers, but in other respects scarcely 
differin, 
__ Whether our English plant should be considered a new form 
of H. minima will depend upon further investigation to test the 
persistency of some small points of divergence. 
_ Wettstein, in his Monograph, includes in the description of 
the corolla of HZ. minima and its varieties and forms numerous 
diversities and mixtures of colours; he gives the time of flowering 
as from July to September. : 
The haustoria rest upon the rootlets of the grass which serves 
as the host, and do not encompass them. The absorption-cells 
are very short, and only just penetrate into the host; the vascular 
by a single and comparatively large vessel. e grasses on the 
rootlets of which the haustoria fasten their suckers suffer no 
apparent injury as a consequence of this connection. The rootlet 
organically united to the sucker dies away in autumn, but the 
