To Asa Gray 19 January 1880
Summary
Describes the germination and early growth of Megarrhiza about which AG has been misinformed. The tubular petioles act functionally like a root.
Ipomoea did not germinate.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 19 Jan 1880 |
| Classmark: | Archives of the Gray Herbarium, Harvard University (126) |
| Letter no: | DCP-LETT-12433 |
To Asa Gray 20 January [1880]
Summary
Germination of Delphinium and Megarrhiza.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 20 Jan [1880] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (127) |
| Letter no: | DCP-LETT-12436 |
To Asa Gray 17 February 1880
Summary
Seed germination.
Strange that his plants [of Megarrhiza] behaved differently from AG’s [see 12455].
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 17 Feb 1880 |
| Classmark: | Archives of the Gray Herbarium, Harvard University (128) |
| Letter no: | DCP-LETT-12489 |
To Asa Gray 20 March [1880]
Summary
Asks AG to confirm whether Ipomoea leptophylla "makes a great tuber as big as a mangel-wurzel".
Petioles of Cotyledons behave partly like those of Megarrhiza.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 20 Mar [1880] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (Walter Deane Autograph Collection) |
| Letter no: | DCP-LETT-12541 |
To Asa Gray 24 March [1880]
Summary
Thanks for Megarrhiza seeds and information. Has been greatly interested by Megarrhiza germination.
Samuel Butler has attacked CD over Erasmus Darwin.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 24 Mar [1880] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (130) |
| Letter no: | DCP-LETT-12545 |
To Asa Gray 19 April 1880
Summary
Thanks for the letter from Volney Rattan [see 12553].
Discusses protective adaptation of seedlings from frost.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 19 Apr 1880 |
| Classmark: | University of California, Berkeley, The Bancroft Library (BANC MSS 74/78 z) |
| Letter no: | DCP-LETT-12582 |
