

Vol. IV, No. 4.] Notes on the Pollination of Flowers. 189 
N.S.) 

of Impatiens ; but in the genus we have a wide series extending from 
Impatiens gammieana up to I, Gageiand I. bicornuta. Impatiens 
gammieana is the species of Impatiens which occurs highest, and 
- is the least conspicuous. It grows under trees and chiefly on up- 
urned tree-roots ; it produces first chasmogamic flowers and then 
sleista mic flowers. The flowers are flesh- coloured ; and if full 
chasmogamic they have a spur (see fig. 7 below) ; but ifcleistogamic 


Fig. 1.—Impatiens discolor, Wall. 2.—I. Gagei, Hook.f. 3.—I. bicornuta, 
—I, longipes, Hook. f. et Thoms. 5.—I. asymmetr ica, * Hook. f. 6.— 
I. trigonopteris, Hook. f. 7.—I. gammieana, "Too x. f: 
are withoutone : there are intermediate stages. Impatiens Gamblez 
occurred with I, gammieana and extended below it. Its hooked 
g. 1 above 
oad limit occurs ean s Gager with violet Paiscicie of the 
same size as those of I. Gamblei, but oblique in mouth and spur as 
