Sent rare cycad seeds for CD’s cotyledon study.
Welwitschia seed germinated at Kew had ordinary cotyledons. JDH thinks mature Welwitschia leaves are original cotyledons.
Showing 1–2 of 2 items
The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Sent rare cycad seeds for CD’s cotyledon study.
Welwitschia seed germinated at Kew had ordinary cotyledons. JDH thinks mature Welwitschia leaves are original cotyledons.
On receiving CD’s letter GMA wrote for wheat seeds to send CD. Gives information on the wheat and on grasses to suggest that variability of the soil accounts for replacement of kubanka by saxonka.