RECORD: Darwin, C. R. 1858.07.11. Ch 3 / Alstroemeria. CUL-DAR49.52-53. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Chapter 3 refers to chapter III of Natural selection "on possibility of all organisms crossing: on susceptibility of reproduction to change".

Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR49 contains notes for Natural selection chap. 3 on 'On...organic beings occasionally crossing' or dichogamy.


[52]

The Ridge. July 11 /58/ Ch. 3.

Alstroemeria small p common orange-flowered - 2 petals streaked, plenty of honey secreted between base of their folded petals on one side of flower, & stigma distinctly turned up rectangularly in gangway between them.

Another species of Larkspur do.

In Impatiens, stigma when mature, slightly bent, especially some of divisions of stigma in gangway.

Scrophularia - pistil bent rectangularly & protruded out of flower I know not what this means.

Several Scrophulariaceæ, as Antirrhinum, Pedicularis, some Labiatæ as blue Salvia have pistils bent with line of gangway of flower, & this is perhaps truest way of looking at Leguminosæ.

Honeysuckle follows law slightly.

[52v]

Lobelia fulgens has pistil bent toward downwards gangway of flower.

[53]

The tall branching annual Larkspur has pistil bent from flower, but may be in gangway

Lathyrus sylvestris has pistil very slightly bent to left side, & hairs on stigma directed quite to left side; hence I infer that pistil has rotated half round.

(In Lathyrus pratensis (which is the flower I had thought only B. muscorum visited) the pistil is quite straight & hairs on the concave side.) ie concave side

(Lathyrus pink. Garden with winged stem: pistil more curved to left than in L. sylvestris, & hairs on left side (??) Bentham says that this garden species is L. sylvestris)

(William watched Bee visit B. sylvestris & he saw it go to left side of 5 flowers. No this mistake I watched several kind of Bees & they all went to center of flower: hence origin of first curvature of flower has no relation to visit of Bees. In entering the flower they push down keel & the pistil is rubbed against belly of Bee

/over

[53v]

The larger brighter-pink cultivated Lathyrus, which Bentham says is same species with L. sylvestris has, perhaps rather more curved pistil, but stigma occupies same position viz opposite or little to right hand (flower facing in) of middle of standard. The young pod on [illeg] is oblique in calyx & the connection of pistil is to bring it ie pistil in centre of standard, so as to be As flower drops off, pod gets straight & pistil then passes to left hand of center of standard or rather of calyx.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 25 September, 2022