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Darwin Correspondence Project

From Thomas Whitelegge   27 May 1878

58 Hillgate St | Hurst Brook | Ashton under Lyne

May 27— 1878

Dear Sir

I forward you four Plants of Ranunculus repens, with the corolla and stamens reduced as in R. acris, but not reduced so much as in the latter.1 I gathered them in Medlock Vale, about 3 miles east of Manchester. I only found five Plants in this condition all of which were growing within a space of about 2 feet square. I have searched very carefully both in the same feild and in about 10 others where R. repens is the principl plant growing therein but failed to find any more in the same condition, not even intermediate forms can I find, but only the usual Hermaphrodites, it appears to be Proterandrous. Perhaps it may in a state similar to that of Lathyrus nissolia— that is in the first stage, of a change.2

I remain | Yours Truly | Thos Whitelegg

Footnotes

Ranunculus repens is the creeping buttercup; R. acris is the meadow buttercup. Whitelegge had sent CD plants of R. acris as an example of a gynodioecious species (see letter from Thomas Whitelegge, 16 May 1878 and n. 1).
Proterandrous (now protandrous) flowers are hermaphrodite flowers in which the male parts mature before the female ones. In Forms of flowers, pp. 326–7, CD had remarked that Lathyrus nissolia (grass vetchling) was apparently in the first stage of producing cleistogamic flowers.

Bibliography

Forms of flowers: The different forms of flowers on plants of the same species. By Charles Darwin. London: John Murray. 1877.

Summary

Has found a few examples of Ranunculus repens with stamens reduced as in R. acris.

Letter details

Letter no.
DCP-LETT-11530
From
Thomas Whitelegge
To
Charles Robert Darwin
Sent from
Ashton-under-Lyne
Source of text
DAR 181: 94
Physical description
ALS 2pp

Please cite as

Darwin Correspondence Project, “Letter no. 11530,” accessed on 26 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-11530.xml

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