Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 7 May [1860]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>To understand <i>Leschenaultia</i> pollination CD requires field observations in the native country.</p><p style='text-align: justify;'>Has observed two forms of cowslips, which he calls male and female. The same two forms are found in primroses.</p>