84 DEVELOPMENT OF THE FLOWER. 
stigmatic surface in the mature flower occupies the whole 
division of the style, forming a disc from the centre of which 
the apex of the two united styles project, it is reducible to 
the most simple form by its study in its early stages. In 
these it will be found to have two linear faces beyond which 
the apex of the style projects. The two stigmatic surfaces 
are confluent below, even now. Pl. 33.—Fig. 10. c, c, c, 
stigma, viscid; a, a, lateral views of very young stigmata; b, 
back view. See also monstrosity 5, one style chiefly deve- 
loped into a hairy like filament still having two small linear sur- 
faces; d, d, style ; e, e, stigmatic ; f, f, apex of perfect ditto. 
In Graminez (Pl. 33.—Fig. 5.) itis the branches only of the 
style that are stigmatic; these are papillose, or rather tooth- 
ed, while there is no tendency to this in the main trunk, ex- 
cept towards its apex. The pollen grains are excited by the — 
branches alone, and the boyaux penetrate into them, and so 
pass into the canal of the main trunk. The canal and its 
branches are scarcely to be recognised but by the passage 
downwards of the boyaux, or rather by the grumous contents 
of these. Such appears to me the most probable explana- 
tion, although there is no demarcation of structure at any 
point, as there is between the structure of the style and con- 
ducting tissue in other less Cellular styles. Early anatomy 
may throw some light upon this, Tincture of Iodine in this 
case only acted upon the contents of the grains, the tube 
remained uncoloured ; the ovary from the immense number 
of molecules appeared a blackish blue. The remaining 
tissue was entirely changed to a fuscous brown, like the 
colour of the tincture. - 
Dalbergia Sissoo. Stigma terminal capitate, fungiform, 
alveolus in the centre; in the young stages the ovary has 
3 vessels, l dorsal, produced up into the style nearly 2; 2 — 
marginals, ceasing at the base of the style. These last are. 
formed last, by extending into the lamina at a time when 
the dorsal vein is perfect. Pl. 33.— Fig. 3. a, ovules on the 
wrong side; 6, stigma. [Stipules scales of buds, no stipels.] 
Pollenic action causes a marked sphacelation, stigmatic 
tissues loaded with grumous matter, almost throughout the 
