DR. M. T. MASTERS ON THE PASSIFLORACEE. 625 
floracee were among Hypogynous rather than Perigynous Exogens, that the nearest allies 
are the Malesherbic (included in Passifloracee by Bentham and Hooker), the Turneracee, 
as already suggested by Dr. Seemann *, the Samydacee, the Bizacee, and the Violacee. 
With other groups the alliance is more remote, and especially in the case of Cucurbitacee, 
with which the alliance is more apparent than real ; or perhaps, as Agardh has suggested T, 
the two should be regarded as parallel or analogous series. The tribes Modeccee, Achariee, 
and Papayaceæ, included by Bentham and Hooker in Passifloracee, should either form a 
suborder or, preferably, a distinct order, intermediate between Passifloracee and Cucur- 
bitacee—a plan followed by Lindley}. Iam disposed to exclude them from Passifloracee 
proper by reason of their unisexual flowers, their perigynous stamens, the different attach- 
ment of the anthers, their want of corona, or, if present, its different nature, their usual 
lack of stipules, &c. 
REMARKS ON THE GENERA OF THE TRIBE PASSIFLOREZÆ. 
DILKEA, nov. gen. 
Under this name I propose the establishment of a new genus, the characters of which 
are hereinafter given. It differs from Passiflora and Tacsonia, to which otherwise it is 
closely allied, in the stamens being scarcely, if at all, removed from the base of the 
flower-tube, in the number of stamens and of styles (8 and 4 respectively), in the linear 
anthers, and the peculiar corona. In some respects it stands intermediate between Pas- 
siflora and Smeathmannia. 
: TACSONIA, 
This genus was; separated from Passiflora by Jussieu, and has been generally adopted 
by botanists, not without a suspicion, however, that it was too closely allied to Passiflora 
to be truly generically distinct. In truth there are a certain number of osculant forms 
* which have been ‘bandied about from one genus to the other to the great confusion of 
Mhe synonymy. By'relegating these intermediate forms (including the species generally 
X ferred to the sections Psilanthus and Distephana) to Passiflora, a much more compact 
3 C ENS 1s formed, Ome distinct morphologically as well as in point of geographical distri- 
paljs 9D, at the sar time that Passiflora is by no means weakened as a genus. The 
tubin distinctive fe tures of Tacsonia, then, reside ix the elongated flower-tube (to which 
m^ manivata offers an exception), in the faucial corona, consisting of tubercles or very 
short threads (to which 7. pinnatistipula constitutes an exception), and in the short 
reflexed membranous corona nearly at the base of the flower-tube. True Tacsonie, as 
thus limited, have a peculiar facies not to be described in words, but one which is, in 
general, recognizable by the eye; and they are peculiar to the western side of the Andes, 
. extending in some cases to great heights. 
; PASSIFLORA. 
De Candolle and others have proposed a great number of sections of this genus, and 
* Botany of the ‘Herald,’ p. 129. Turnerads differ, however, from Passiflorads in their fugacious, not persistent, 
petals, as remarked by Dr. Hooker, Gen. Pl, i. 806. 
+ Agardh, Theoria Syst. Veg. p. 386, 
- VOL. XXVI. 
+ Lindley, Veg, Kinzd. 322. 
40 
