352 BOTANICAL GAZETTE [NOVEMBER 
the stamens were triadelphous, one, two, and nine, or one, two, 
and seven. 
5. Abnormal aestivation. (a) In three cases one ala was 
external to the vexillum. (6) In six instances the supernu- 
merary vexillum had one margin enclosed within the carina. (c) 
In several cases there was an abnormal folding of the vexillum 
upon itself. 
There have been but few cases recorded of the union of sepals 
in Clematis, and belonging as it does to a family which typically 
has all the parts distinct, the union of parts is all the more 
remarkable. Perhaps the most noteworthy case of this kind is 
that described by Jaeger® (1828), in which the sepals of Clematis 
Viticella L. were united into a bilabiate tubular perianth. Ch. 
Fermond? (1884) has found many cases of three-parted perianths 
in Clematis sp., and Cockerell® (1897) remarks upon the com- 
mon occurrence of the union of two sepals in C. ligusticifolia. 
In a specimen of Clematis growing at Edgewood, North Hamp- 
ton, O., said to be a seedling of C. Jackmani of the gardeners, 
there are found every year many cases of similar union of 
sepals, and in varying degrees of union, from the slight union of 
two sepals to the complete union of all the sepals into a regular, 
tubular, gamosepalous flower (figs. 37-34). This complete 
union, shown in fig. 34, does not occur often, but I have found 
two like the one figured. If this is a seedling of C. Jackmant, 
its variations are rather remarkable because of the almost abso- 
lute invariability of that form. Inthe “Star of India’*® Clem- 
atis there is a marked tendency to depart from the typical 
four-parted perianth, and to produce flowers having six sepals. 
In this species are found many cases of division or of union of 
sepals. 
®Nov. Act. Acad. Caes. Leop. 1828 :641. /. 37. 
7Essai de phytomorphie, ou étude des causes qui déterminent les principales 
.formes végétales. 2 vols. Paris. 
8 Bot. Gaz. 24: 293. : 
° This is the garden name. I have been unable to determine its specific relation- 
ship. 
