RECORD: Darwin, C. R. 1862.07.11-11.07. The 4 pots of Chinese Primroses. CUL-DAR108.125-130. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR108-111 contain material for Darwin's book Forms of flowers (1877).

John Horwood (1823-c.1880) was the head gardener of Darwin's neighbour G.H. Turnbull. 1862-63 Horwood superintended the building of Darwin's hothouse. Darwin acknowledged his assistance in Orchids, p. 158.


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July 11. 1862— The 4 Pots of Chinese Primrose, with the seedlings from Homomorphic seedlings all have germinated almost equally last night— so no difference in germination if there be in dwarfing—

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This wd likewise account for the greater inequality observed by Dr H. then by me between the product of seed from the legitim & illegitimate union, for the latter, I have always found, always suffer most from unfavourable conditions.

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Chinese Primroses, which have just flowered & must be counted in July 26 — 1862

no. 4. (homomorphic seedling) short-styled

no 2. (Heteromorphic seedling) short-styled

no. 3d (homomorphic seedling) four plants all long-styled—

children

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Chinese Primrose

July 28th 62. I observe that the homomorphic grandchildren, of the homomorphic children of no. 4 (ie short-styled parent) are behind the other pots in growth & look sickly. — There are only 6 plants — They are but a shade smaller than the grandchildren (crossed heteromorphically) from the homomorphic children of no. 4.— no 3 homomorphic grandchildren are much finer; as are grandchildren of Horwood seedlings.—

Grandchildren

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Down Oct 2d 1862. During my absence 4 plants of no. 3. (P. sinensis) long-styled homomorphic seedlings have flowered & all are long-styled: these must be added.—

Children

Oct 2d 1862

Of the grandchildren homomorphic, when I left there were 5 homomorphic seedlings from homomorphic no. 4.; of which were very puny: three soon died & only 2 2 are now alive, & these like their parents are very much smaller plant, than the average — (Of the homomorphic seedlings No 4, there was one long-styled, so that I was albe to make a few Heteromorphic cross between the Homomorphic seedlings these have grown vigorously, & I have plenty of new young Plants.—

Grandchildren

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Aug 9 1862. It is odd, but the seedlings Homomorphic from Homomorphic union of Chinese Primrose. long-styled (ie grandchildren) are much the finest of all 4 lots now sown.

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Nov. 7 1862. It is wonderful the difference in Chinese Primroses now growing up, between the Homomorphic grandchildren seedling from no. 3 (ie long-styled twice homomorphically united) which are splendid plants, & those grandchildren from no 4 (ie short-styled); though of these grandchildren, some two homomorphically & heteromorphically united inter se.—

I remember when seeds first raised there was same difference.— These grandchildren of no. 3 are larger than Horwood seedling grandchildren—

Any one would think lots of grandchildren from 3 & 4 had been planted sown.— a week or two apart.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 12 January, 2023