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To Asa Gray 21 February [1858]
Summary
Asks whether botanists tend to record varieties more carefully in large genera or small genera.
Wants information on the ranges of varieties of a species compared to the range of the species.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 21 Feb [1858] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (21) |
| Letter no: | DCP-LETT-2218 |
