CHARACTERS OF BRITISH PLANTS. 77 
to be excluded from the specific character. I possess a 
specimen in which the leaves are whorled the whole length of 
the stem, as is frequently the case in L. repens. 
Tinira Italica (Trev.)—I am not quite assured yet that 
the English plant is rightly thus named ; but would fully 
concur in the opinion of its being a bybrid, intermediate. 
between L. repens and L. vulgaris. 
Mentha arvensis (Linn.)J— Upper leaves usually much 
smaller. Occasionally the uppermost leaves are almost 
equally large with those below them, but in my neighbour- 
hood this is certainly more the exception than the character. 
Calamintha officinalis (Moench) and C. Nepeta (Pursh).— 
Both have fruit with impressed dots, though the dots may 
be more numerous and deeper on the fruit of C. officinalis. 
Is the fruit of C. Nepeta always smaller and paler? The 
leaves in both are either obtuse or subacute. 
Lamium album (Linn.) and L. maculatum (Linn.) —Equally 
in both I find one slender tooth on the lateral lobes of the 
lower lip of the corolla, and cannot understand the character 
of “three teeth” ascribed to L. album. Have the angles 
produced by the revolute edge of the lobes of the lip been 
mistaken for teeth? They exist, however, in both. Perhaps, 
in both also, the broadest sinus occurs between the two 
lowest teeth of the calyx. The appearance of separation 
between the upper tooth and the rest in L. album, is rather 
induced by a lateral compression of the calyx, than by any 
actual distance. In L. maculatum, the teeth of the calyx are 
more reflexed and the stem is less hairy than in L. album. 
The leaves of the latter are frequently spotted with numerous 
small white marks. 
Primula elatior (Jacq. )—There appear to be four planté 
which pass under this name in England. First, a form of _ 
P. vulgaris, in which the umbel is elevated on a common - 
stalk, instead of remaining sessile among the leaves. Se- 
condly, another form of P. vulgaris, in which the flowers are 
smaller and deeper-coloured, and grow in a many-flowered 
umbel on a 1 stout scape. I take this to be a hybrid between. 
