JDH’s letter on grounds of generalisation in plant morphology.
Faunal distribution and the glacial period.
Orchid homologies.
Showing 21–32 of 32 items
JDH’s letter on grounds of generalisation in plant morphology.
Faunal distribution and the glacial period.
Orchid homologies.
JDH asked to check Lindley on Acropera.
Transport of an orchid to Down.
Sends notes on fertilisation of Victoria regia tending to show that impregnation with foreign pollen increases productivity of seeds.
Acropera species may be males of other orchids.
Homologies of ducts in orchids.
Went to British Museum to see Bates’s mimetic butterflies.
Remarks about Labiatae, Linum, Oxalis and Viola occasioned by hearing CD’s paper ["Two forms of Primula", read 21 Nov 1861, Collected papers 2: 45–63].
Lists pairs of Oxalis species with differing proportions of stamens and styles.
Requests that DO examine enclosed microscope slides of Acropera ovules, to confirm CD’s opinion that females are non-functional.
Can DO comment on disagreement between Robert Brown and John Lindley over the number of Acropera carpels?
O. Heer’s Atlantis theory vs CD’s hypothesis of a migration north during warm periods.
No summary available.
Reports on state of family’s health.
Thanks for "multitudinous" references.
Thanks Hooker for orchids.
Knows nothing of the habits of earwigs. Thinks Edward Newman may be trusted on the point [as to whether or not earwigs can fly].