RECORD: Darwin, C. R. 6.1842. [Notes on bees and heartease]. CUL-DAR46.2.C23. Transcribed by Kees Rookmaaker. Edited by John van Wyhe (Darwin Online,

REVISION HISTORY: Transcribed from the Darwin Online images by Kees Rookmaaker, corrections by John van Wyhe, 8.2010. RN1

NOTE: Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.


June 2. 42 Maer Tuesday Thursday

After watching 14 days, many times every day. many clumps of heartseases, never saw any Bee go to them. Yesterday remarked that many flowers had suddenly withered, & to day saw very odd dusky humble (with pollen) on legs go from clump to clump, & insect proboscis in many flowers, on one of which pollen was routed, wh. was not case, on several flowers I examined some days ago — This Bee flew from yellow to yellow & purple heartease without doubt. —

Bee, not large, very dusky & broad never saw such a one before —

Saw Fly 21 this Heartease withered on Monday. — alight on upper petals & insert proboscis, under stigma & draw it out over & over again & wipe off pollen, (as a needle becomes


covered) so whole sides of flower & stigma dusted.— I think When it first alighted, it cleaned sucker & I think pollen was scraped off, which appeared like Heartease pollen. — the pollen appeared chaffy, as if sucked?! opens & shuts end of sucker, after having withdrawn it. — Saw 4 more Bees at work — another odd genus — & a small common Humble — & more of same fly

Two more of the flowers withered.—

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (

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