[23]

Monochætum ensiferum oldish flowers with pistil became straight

Feb 12. 1862

Stamen changes position as well as pistil in old flowers. (a) [annotated sketch]

Young flower, I believe quite ready for action

[annotated sketch]

[left margin:] (Red means passage into flower for nectar. –)

[right margin:] (These are very accurate) If the pistils are dimorphic with respect to the pollen, the movements of the pistil would suffice for fertilisation

N.B. pistil lies close to lower side (in this position) ring of stamens, bearing channel for nectar always above upwardly curled stigma – Bases of filament much flattened & overlapping each other compelling an insect to visit flower in front, probably in whatever position flower stands

(over)

[23v]

Judging from very old flowers of Heterocentron roseum the pistil in unimpregnated flowers (& all old flowers with the straight pistil of monochætum were unimpregnated) always remained the very last bent rectangularly to tube of corolla.

[sketch]

{Good for comparison with dried flowers}

(a) when corolla shed - stamen all rise into exact straight line of corolla – & as pistil rises

the stigma passes through the yellow anthers; & if pollen not all shed & stigma not too old (probably not from Chinese Primrose being fertilised when corolla drops) would be self-fertilised

(a) in flower when first opens pistil even more bent - & purple anthers depend parallel tube of corolla – then anther afterward rise to position in drawing.