[111]

Aug 17th 66 Apios tuberosa - Keel a tube with edge coherent at end, curved into a sickle-formed, with extremity enlarged & firmly lodged in fitting cavity at upper margin of standard - Lateral or wing petals drooping & rather shrunk - Bee stands either on them or on summit of standard & when weather is hot small push frees keel from its lodgment & then it curls down & in each stigma & stamen are largely protruded - stigma conical surrounded by brushes & after the spout protrusion rests on its own lower part, forming a circle. Apparently does not receive own pollen, but it & anther wd be brushed by Bee entering either side for nectar, of which I saw none, but plant unhealthy. Pollen scanty. I do not believe without aid end of Keel wd even be freed from lodgment. When free extremity of Keel splits open, allowing egress of R. Organs

(Over)

 

[111v]

Asa Gray in Flora says Keel-petal becomes ultimately twisted - Is this after or before impregnation?

I have ascertained positively that Keel in protected flowers does not free itself -

4 fl. white Thread fertilised, but pollen very scanty

3 marked by bundle of black thread, with stigma scantly freed from tube

 

(All flowers dropped off Plant unhealthy)