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To Adolf Ernst   5 January 1880

Summary

Has read AE’s paper in Nature [21 (1880): 217] on Melochia, a new family of heterostyled plants, and suggests some crosses to be carried out to determine the fertility of illegitimate seedlings.

Author:  Charles Robert Darwin
Addressee:  Adolf Ernst
Date:  5 Jan 1880
Classmark:  State Darwin Museum, Moscow (GDM KP OF 8972)
Letter no:  DCP-LETT-12402

From Adolf Ernst   29 February 1880

Summary

Plants in Venezuelan plains.

Observations on Turnera: heterostyly, leaf-base glands’ secretion eaten by ants.

Observations on role of leaf secretions in fertilisation of Marcgravia and Passiflora.

Author:  Adolf Ernst
Addressee:  Charles Robert Darwin
Date:  29 Feb 1880
Classmark:  DAR 163: 21
Letter no:  DCP-LETT-12504

To Adolf Ernst   4 April 1880

Summary

Thanks for interesting letter; is sure it would be worth while to test fertility of illegitimate offspring of heterostyled plants.

Would welcome any information on occurrence of bloom-covered leaves on dry plains.

Author:  Charles Robert Darwin
Addressee:  Adolf Ernst
Date:  4 Apr 1880
Classmark:  State Darwin Museum, Moscow (GDM KP OF 8973)
Letter no:  DCP-LETT-12561

From Adolf Ernst   7 August 1880

Summary

Cobaea fertilisation.

Describes moth-pollination of gentian growing on Venezuelan mountains.

Author:  Adolf Ernst
Addressee:  Charles Robert Darwin
Date:  7 Aug 1880
Classmark:  DAR 163: 22
Letter no:  DCP-LETT-12682

To Adolf Ernst   11 September 1880

Summary

Thanks for seeds of Cobaea;

was much interested in AE’s article ["On the fertilisation of Cobaea penduliflora", Nature 22 (1880): 148–9] opposing G. E. M. Bonnier’s view ["Les nectaires", Ann. Sci. Nat. (Bot.) 6th ser. 8 (1879): 6–212].

Case of Lisianthus is an excellent one of structure and movement of parts adapted to cross-fertilisation.

Asks whether worm-castings are found in the area.

Author:  Charles Robert Darwin
Addressee:  Adolf Ernst
Date:  11 Sept 1880
Classmark:  State Darwin Museum, Moscow (GDM KP OF 8974)
Letter no:  DCP-LETT-12711

From Adolf Ernst   17 October 1880

Summary

Observations on earthworms in Venezuela.

Author:  Adolf Ernst
Addressee:  Charles Robert Darwin
Date:  17 Oct 1880
Classmark:  DAR 163: 23
Letter no:  DCP-LETT-12764
Document type
letter (6)
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Correspondent
Date
1880
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