13 
partly induplicate-valvate; in no. 3, C. Stanleyi, we see a 
gradation which links up with no, 4, C. Kirkwi, where the 
aestivation approaches most nearly that of typical Clematis, 1.e., 
induplicate-valvate, except that the overlapped margins are not 
inflexed. : 
Diagrams showing different types of aestivation in Olematopsis. 
In the early part of last century the MSS. name Clematopsis 
appears to have been given by Bojer to a few Mascarene species 
showing this feature, the name first appearing as a nomen nudum 
in Hooker’s Icones Plantarum, vol. i. t. x. (1837), wherein 
several of the species are described as Clematis. At tab. 10 of 
that work, which depicts Clematis Bojeri, Hook. [ =Clematopsis 
villosa, Hutchinson], Sir William Hooker makes the following 
observation :—‘‘ This is one of several species of Clematis sent 
me from the island of Madagascar by the late Dr. Lyall, differing 
strikingly from any described species, and of which has been 
constituted a new genus in Mr. Bojer’s MSS. under the name of 
Clematopsis. But I am not aware of any character to warrant 
such a separation. All have singularly large flowers and most 
of them very long peduncles.” 
As a valvate aestivation has no doubt been derived from an 
linking up, as it clearly does, the tribes Anemoneae (throu 
Anemone § Pulsatilla) and Clematideae. It seems desirable, 
therefore, that Bojer’s views as to its generic importance, though 
expressed only by the MSS. name, should be maintained. If we 
take into account the somewhat slender means by which several 
other genera of Ranunculaceae are separated, then Clematopsis 
has good claims to recognition. It is true, as remarked upon by 
Baillon,* that in some of the larger-flowered species of Clematis, 
such as C. florida, from which many of the beautiful garden races 
have been derived, the sepals become imbricate after the flowers 
have opened, but in the bud stage they are valvate. 
position of Clematopsis between Anemone (alternate leaves) and 
Clematis (opposite leaves). This is that. when the nature of 
C. Stanleyi (q.v.) is disturbed by cultivation, it sometimes pro- 
duces alternate leaves, thereby becoming to all intents and pur- 
ses a species of Anemone. Another = nemone feature ’’ is 
the involucrate leaves of three Angolan species (see key). 
* Histoire des Plantes, i, 87 (1867). 
