From Asa Gray 4 August 1862
Summary
Gives J. T. Rothrock’s observations on the structure and fertility of the two forms of Houstonia. Mentions his own observations on Rhexia virginica and Gymnadenia tridentata.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 4 Aug 1862 |
| Classmark: | DAR 110 (ser. 2): 67–9 |
| Letter no: | DCP-LETT-3679 |
From Asa Gray 18–19 August 1862
Summary
Notes and observations on orchids.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 18–19 Aug 1862 |
| Classmark: | DAR 165: 111, 116 |
| Letter no: | DCP-LETT-3688 |
Document type
| letter | (2) |
Addressee
| Darwin, C. R. | (2) |
