PROF. T. H. HUXLEY ON THE GENTIANS. 108 
dried plants are very unfavourable subjects for the determination 
of points of this kind; and as many of these flowers, which have 
no apparent nectaries, are known to be visited by honey-sucking 
insects, I shall for the present assume that honey-secreting sur- 
faces exist on the central parts of the flower. In contradistinc- 
tion to the Perimelite, the Gentiane® of this series may be 
tenned Mesomelite. 
In the series of the Perimelite four modifications of floral 
structure are discernible. To these I propose to give the names 
of Actinanthe, Keratanthe, Lophanthe, and Stephananthe. 
I. Actinanthe. 
The corolla is rotate*, or, if it is more or less campanulate, 
the sinuses which separate the lobes are very deep. The 
nectarial areæ are single or double, and often concave in- 
wardly. There is no distinct gynophore; but the ovary is occa- 
sionally “ stipitate ;” that is to say, its basal moiety, which then 
contains no ovules and remains very narrow, constitutes an 
apparent stalk on which the dilated ovuligerous moiety is sup- 
ported. The margins of the lobes of the corolla may be produced 
into longer or shorter denticulations or lacini; but there are no 
filamentous appendages developed on the inner face of the corolla. 
The stigmatic surfaces are oblong-ovate. 
The species in which I have found this type of floral structure 
are :— 
. B. E. 
Gentiana Gentiana Gentiana 
aurea. primulefolia. saxosa. 
umbellata. vaginalis. cerina. 
Moocroftiana. nummularifolia. 
detonsa. saxicola. 
multicaulis. 
Jxschkea. incurva. 
Pleurogyne. Grisebachii. 
Exadenus. gracilis. 
monieroides. 
ericoides. 
magellanica. 
patagonica. 
* This term appears to me to be often employed ambiguously. It is 
applied, on the one hand, to corolla in which the cup appears to be formed 
merely by the confluence or connation of the bases of the lobes, and is not in 
any way marked off from the latter; and, on the other hand, to corolle in 
K2 
