MR. T. H. CORRY ON ASCLEPIAS CORNUTI. л, 
increased greatly in size, while they have at the same time been rotated through an angle of 45°. 
They now project over the furrow, and the portions of them which were formed in the previous 
stage have dried still more, and become of a darker colour. 
Fig. 16. Front view of a removed corpusculum where union of the two lateral halves below is just begin- 
ning at the apex, owing to excretions from the floor of the furrow in that region. corp. ap. Its 
appendages, which exhibit the appearance of perforated sheets of pale-yellow gum, except in the 
middle line of each; this latter part is formed by the hollow of the lateral groove, and not by. 
its margins; it is slightly darker in colour than the rest. 
Fig. 17. Longitudinal section of a portion of the style-table in a plane through one of the anther-cells, 
showing one of the lateral diverging grooves, [.9., the cells of which excrete the gum forming the 
corpuscular appendage, corp.ap. Owing to the method of its formation, this last-named body 
is thickest in the middle part, while its lateral margins still exhibit the impressions of the under- 
lying excreting-cells. 
Fig. 18. Transverse section through a nearly adult corpusculum and the cells of the style-table, s.t., 
which excrete it, forming, с./., the corpuscular furrow near the base of the corpusculum, on one 
side below the attachment of the appendage, on the other side at the lower end of this junction. 
corp. Corpusculum, the striations in which are indications of the ends of the papilliform cells 
which excreted it, and the ends of which still project slightly into its more liquid portion. The 
projecting anterior margins which were first formed have dried most completely, and are 
darkest ; then the internal surface, while the exterior is still in the condition of yellow, only 
partially hardened gum. 
The lateral grooves, /.g., which excrete the “ appendages,” are also seen with their still semi- 
liquid exudations, corp. ар., whose under-surface exhibits, where it has been raised, the imprint 
of the underlying cells. 
Fig. 19. Adult corpusculum, corp., its appendages, corp. ap., and pollinia, pol., attached to pulvillus of a 
fl'sleg. Front view. 
Figs. 20 & 21. Combinations of corpuscula with each other: Fig. 20. Unilateral or row-combinations ; 
Fig. 21. Dichotomous combination. 
