56 - MR. J. C. WILLIS ON THE 
The tube is narrowed, especially towards the top, by five longi- 
tudinal furrows in the corolla, which form corresponding ridges 
inside, opposite to the stamens (fig. 9). These are coloured 
white and may perhaps act as honey- guides, beside narrowing 
the passage to the nectary. The stamens, five in number, are 
inserted upon the base of the corolla and project beyond it. The 
anthers are large and versatile, facing upwards. To the base of 
each stamen, on the inner side, is attached a scale, which projects 
laterally in its upper part (figs. 10 and 11). The projecting 
portions of the scales of adjacent stamens meet, and leave between 
them only a narrow opening to the chamber below, which con- 
tains the honey, secreted as usual by the disk below the ovary. 
The ovary is flattened and hairy, especially at the ends. The 
style is bifid with terminal stigmas, and hairy at the base. The 
hairs on the ovary and the base of the style fill up the space 
between themselves and the stamens, so that the only convenient 
access to the honey is between the bases of the stamens. No 
other protection from rain is afforded than that above described ; 
the flower does not close, nor does it bend downwards. In its 
native country (California) this want of protection from rain 
may be no serious disadvantage, but in Cambridge the flowers 
were sometimes half filled with rain-water. 
During the time that it is open, the flower usually faces in a 
southerly direction, at an angle of from 50° to 60° with the 
horizon (Cambridge, August). The stamens are bent downwards 
in the bud, the style straight, with its branches closely pressed 
together. The stamens straighten out when the flower opens, 
usually, however, becoming slightly curved upwards. The 
anthers dehisce very quickly and expose all their pollen at once. 
The flower (figs. 6 and 7) is now inits male stage, the style being 
still much shorter than the stamens, while microscopic examin- 
ation of its stigmas discloses their unripeness, the papilla not 
being as yet fully developed. The two branches of the style 
are more or less closely pressed against one another. It grows 
rapidly and in 24-36 hours is level with the stamens, finally 
overtopping them by 2-5 mm. The branches of the style 
also separate and the stigmas become fully developed. The 
female stage now begins (fig. 8) and closes with the fall of 
the corolla. 
This flower is evidently much better adapted to secure cross- 
fertilization than the preceding species, while not so well fitted, 
