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From W. E. Darwin [30 April 1864]
Summary
[Outline sketches of pollen from long- and short-styled yellow cowslips and from red cowslip, magnified 350x.]
| Author: | William Erasmus Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [30 Apr 1864] |
| Classmark: | DAR 108: 84 |
| Letter no: | DCP-LETT-4478 |
From William Erasmus Darwin [late February–May 1865]
Summary
[Outline sketches of pollen from short-styled yellow primrose and from long-styled yellow and red primroses.]
| Author: | William Erasmus Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [late Feb–May 1865] |
| Classmark: | DAR 108: 89a |
| Letter no: | DCP-LETT-4729 |
From William Erasmus Darwin [15 March 1864]
Summary
Has drawn all three forms of primroses CD sent "with same result". Has found no pink variety with middle style.
| Author: | William Erasmus Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | [15 Mar 1864] |
| Classmark: | DAR 108: 85, 173–4 |
| Letter no: | DCP-LETT-4416 |
From W. E. Darwin 14 April [1864]
Summary
Observations on [length of style and length of filament and stigmas of] Pulmonaria.
| Author: | William Erasmus Darwin |
| Addressee: | Charles Robert Darwin |
| Date: | 14 Apr [1864] |
| Classmark: | DAR 110: A68–74 |
| Letter no: | DCP-LETT-4462 |
Matches: 1 hit
- … 1863, William also sketched the forms of Pulmonaria angustifolia flowers (which he labelled ‘Anchusa officinalis’) in his botanical sketchbook (see DAR 186: 43, p. 53). Drawings of the long-styled and the short-styled forms are in Forms of flowers , p. 105. See enclosures 1 and 2. The sketches are reproduced at 40 per cent of their original size. CD believed that differences in pollen sizes and in the relative sizes of some other structures were an indication of heterostyly (see letter from John Scott, …
