ON HYPERICUM UNDULATUM. 99 
There are a few unimportant differences, viz. the leaves of Willde- 
now's plant are rather narrower than those of the English specimen 
[not so my specimen from Welwitsch], and they are thicker and less 
transparent, the principal veins are more prominent on the under side, 
and the edge more crisp; but the numerous glandular dots are equally 
transparent in both plants; the black dots also are present upon the 
edges of the leaves of both, but on that from England they are some- 
times diffused over the surface. The black dots on the stem, men- 
tioned by Willdenow, are to be found on both plants, but are not very 
numerous nor particularly prominent. In the Berlin specimens the 
inflorescence is very many-flowered, in the English (judging from the 
one specimen sent) it appears poorer and more lax. The sepals, the 
form of which constitutes the chief difference between this plant and 
H. quadrangulum (with which De Candolle [or rather Choisy] unites it 
as a variety) are in the plant of Willdenow narrower and more pointed 
than in the English example. But these differences are very slight. 
* That part of the corolla which in sestivation is not covered, is red- 
dish on the outside, as is specially noticed by Willdenow. This is also 
the case with the plant found by Mr. Briggs. Both the English and 
Berlin specimens have a few minute black dots on the other paler part 
of the petals. There is also a black dot on the anthers of both 
plants. 
The specimens collected by Welwitsch in Portugal [Unio Itinera- 
ria] and issued as part of his ‘Iter Lusitanicum,’ n. 171, agree pre- 
feetly with Willdenow's plant. s 
** A cultivated specimen of HM. decipiens, Wats., received from: him- 
self, agrées better in habit with the English than with the plant of 
Willdenow ; but the leaves are more wavy on the edge and the sep 
rather broader [not constantly] than those of the latter. I quite be- 
lieve that Æ. decipiens must be combined with H. undulatum. There 
is more doubt about the identity of H. Bæticum, Boiss., with them; 
and I should rather be inclined to consider it as a variety. A speci- 
men before me, collected in Granada (Bourgeau, n. 24), and one de- 
rived from a root lately cultivated in our garden, have decidedly broader 
and more pointed sepals :—‘ sepala ovato-lanceolata" is Boissier's spe- 
ifie character. The corolla seems smaller, and, as far as I can judge 
from dry specimens, it is of a paler yellow, not red, on the outside. 
The petals bear fewer black dots, and the edges of the — leaves 
H 
