skip to content

Darwin Correspondence Project

To Friedrich Ludwig   1 August 1877

Down Beckenham Kent

Aug 1. 1877

Dear Sir,

I am very much obliged to you for your clear account of the cleistogamic flowers of Collomia, together with the dried flowers.1 The case seems to me a very striking and interesting one.

I remain, dear Sir, | Yours faithfully & obliged | Charles Darwin


Ludwig had sent CD his description of cleistogamic flowers of Collomia grandiflora (large-flowered mountain trumpet or phlox) from the Verhandlungen des botanischen Vereins für die Provinz Brandenburg (Ludwig 1876). CD’s annotated copy of Ludwig’s description is in DAR 133.19: 6. CD added a reference to Ludwig 1876 in the preface to Forms of flowers 2d ed., p. x.


Forms of flowers 2d ed.: The different forms of flowers on plants of the same species. 2d edition. By Charles Darwin. London: John Murray. 1880.

Ludwig, Friedrich. 1876. Kleistogamische Blüthen und Verbreitung der Samen der Collomia grandiflora. [Read 25 August 1876.] Verhandlungen des botanischen Vereins der Provinz Brandenburg 18 (1875–6): 117–19.


Much obliged for account of cleistogamic flowers.

Letter details

Letter no.
Charles Robert Darwin
Friedrich Ludwig
Sent from
Source of text
American Philosophical Society (Mss.B.D25.)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 11087,” accessed on 16 October 2021,