98 ON HYPERICUM: UNDULATUM. 
at the edge, the stem bears many black dots, and. the eyme is closer ; 
but an unnamed specimen. from him (n. 1162) gathered at. 8, de Es- 
trella, is much more like our plant. The plate of 47. undulatum, 
given by Reichenbach, is probably incorrect. | He represents the leaves 
as crenately wavy at the edges and plieate along the “vena penni- 
nervia." Boissier’s plate and my specimens of H. undulatum, H. Boti- 
cum, H. Neapolitanum, and H. decipiens, have the edges of the leaves 
(often very minutely) wavy and the venation **5—6-nervia."  Boissier 
says nothing of the waviness nor plication, and figures the leaves as if 
plane. He makes no remark upon the dash of red colour on the pe- 
tals, which Reichenbach very correctly states is confined to one longi- 
tudinal half, and the black dots to the other half of each petal. My 
specimen of H. Neapolitanum was received from Professor Gasparrini, 
of Naples, as the plant of Tenore. It rather more nearly resembles 
the specimen of Z. undulatum from Welwitsch, than those from De- 
vonshire; but is undoubtedly the same species. Gussone says that 
the leaves are not furnished with pellucid dots, but they are abundant 
on Gasparrini’s specimens. The Madeiran specimens (from St. An- 
tonio de Serra) are much less branched than the English plant, and 
the cyme is much smaller and of fewer flowers. . There is a rudimen- 
tary branch in nearly every axil, and therefore situation or climate is 
probably the cause of this difference. 
The following is a translation of Dr. A. Braun's letter, addressed 
to the Editor :— 
* Berlin, 20th January, 1864. 
“In accordance with your request, I have. searched our herbaria 
for specimens of the H. undulatum, Schousb., which. is described by 
now in his ‘ Enumeratio Plantarum Hort, Berolinensis.' . There 
is no specimen of it in Willdenow's own herbarium, but there are 
two in that of Kunth, labelled * H. undulatum, Hort. Berol. 1806- 
1812. These were gathered in the garden during Willdenow’ s life. 
A specimen entirely agreeing with them was placed by Otto in the 
garden herbarium, which is labelled * ZZ. undulatum ; habitat in Bar- 
baria. That these specimens belong to the M. undulatum of Will- 
denow's ‘ Enumeratio > cannot be doubted. The diagnosis. exactly 
agrees with them. The comparison of the specimens gathered in our 
garden during the lifetime of Willdenow, with that sent. by you. as 
found near Plymouth, leaves no doubt about. their specific identity. 
