From Asa Gray 21 November 1870
Summary
Reports case of apparent incipient dimorphism. Observations on variations in flower structure, especially style length, within species of Polemoniaceae.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 21 Nov 1870 |
| Classmark: | DAR 110: B70–3 |
| Letter no: | DCP-LETT-7378 |
