RECORD: Darwin, C. R. n.d. Period of flowering [summary and index of observations]. CUL-DAR77.90-91. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Text prepared and edited by John van Wyhe. 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-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).


90

Period of Flowering

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(1) p. 70 Ipomaea. 8th gen, [illeg words] Crossed plant generally flowered before the self-fert, (nothing more)

   79 ― Offspring from a cross between the flowers on same plant & so flower fert with its own pollen only in 2 out of 10 (same plant) (X) Pots did crossed fl. first, & they were generally shorter & lighter plants

   106.    general statement that crossed flowered first

2 p. 116 Mimulus 1st gen. flower Both the crossed plant open flowered before one on the    Some flowers on the crossed plant were fully expanded before 1 on the s. fert. plant

3 117 ― 2d    do in all 3 pots (a crossed plant in all 3 pots flower before one of the s.f. plant in the same 3 Pot

4 120 ― 3d gen.    do    do

5 125 ― 5th gen.    do    do — yet crossed the s.f. [illeg words] in high 100 : 126 !

   126    (1) ✔ 6th S gen    1/2 crossed 1/2 self pots first, yet the self fertilised tall & 12 plants very so

   132. X undercrossed from self compared with selfs. in 3 pots self flowered first, in 2 pots crossed first

6 140 in 3d pot Intercrossed & Chelsea-crossed var then cross the self-fertilised — flowered at same time & in all pots, except one out of the 10 Pots.

   144 (X) Offspring from 2 flowers on same plant & s. fert flowers, in 7/8 pots a self-fert. flowered first

7 177. Salvia coccinea, crossed flowered first in all 3 pots

8 181. Origanum vulgare — crossed flowered first some plants during 2 successive seasons — this refer to crossed seedlings

9 182 Brassica. 1st gen: all crossed in pot & open grand flowered first—

10 189 ― 2d gen in 3/4 of pots crossed first

11 199 Iberis  1/2 ― do. In both pots a crossed crossed. flower first

   211. Eschscholtzia. 1st gen. English stock regrown & cut down. ✔ 3/4 self-fert flowered first

   220 x12 ― Brazilian crossed by fresh stock in 5/9 pots English-crossed flowered first : in 4/9 self-fert. & 0/9 for undercrossed grandchildren.

(228 of Reseda lutea X all but 3/24 flowered — several of self-ferts did not do so)

241. 13 Viola tricolor in 5/8 pots crossed flowered first

245 ― X mutually crossed plants from crossed flowered before nat. fert. from s. fert plants in all 3 pots.

253 (3) S Viscaria oculata ( hardy any different in height) ✔ crossed & s-fert plants flowered nearly about same time.

257 14 —Dianthus car. 1st gen out of large beds 4 of crossed pl. flowered before 1 of self fert plant

259 15(A) ― ― 2' gen.    ✔ 2/2 in both pots crossed flowered firs.

260   16 16 ― 3d gen    3/4    do.    do — in height as 100 : 99. shows independent of height    in weight as 100 : 49.

266   /17 ― in only one out of 10 Pots, did a s. fert plant flower before an undercrossed    (crossed by own crossed) or London-crossed, between which no marked difference

272 16 18 Hibiscus africanus in 3/4 crossed flowered first — yet height 100 to 109 !!

278  19 Tropaeolum minus. in 3/4 crossed first — simultaneously in the 4th pot.

280 18 20 Limnanths Douglasii    4/5 —    do.

283 (5) Lupinus luteus (2d gen:) ✔ 3/0 pot. self-fert flowered first, though crossed rather shorter plant taller & [illeg]

292 (21) Phaseolus multiflorus    2/0 crossed first

91

Period of flowering

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p 305. (6) S Lathyrus odoratus — (2d gen) ✔ no marked difference in flowering of crossed & self-fert.

308 X ― ― s.f. plant from X crossed pl. flowered before s.f. from crossed plants

330 22 Clarkia elegans 2/0 crossed self-fert flowered first

340 23 Specularia speculum 4/0    do    do

342 24 Lobelia ramosa (1' gen) 4/0    crossed flowers before any one of s. fert plants

344 25 ― ― 2d gen) 4/0 ― ― some days before any of s. fert.

347 (7) Lobelia fulgens (1' gen) ✔ s-fert flowered much before crossed & taller & finer plants.

350 (8) S ― ― 2d  gen.) ✔ ― [illeg words]

353 26 Nemophila insignis 4/5 crossed first

359 27 Borago officinalis 2/0    ― in one the crossed went to s.f in height, as 100 to 65

366 28 Petunia (2nd gen). In all three pots [illeg] as we shall presently see the s.f. plants were [illeg words] self crossed var flowered before self-f first

369 ✔ (9) ― ― (3rd gen) ✔ In 3/4 pots self-fert. flowered first, in 4th pot simultan:

375 ✔ (10) ― ― (4th gen) ✔ Though crossed plants much higher, yet in 3/5 pots self fert flowered 1st first, in 4th pot simultaneously & in 5th crossed first

396 ✔ (11) Nicotiana (1st gen) Self-ferts in height to crossed as 178 to 5 100, & in all 4 pots self-fert ✔ flowered first.

403 ✔ (12) S ― ― (3rd gen) In half the pots, crossed first in other half self first; the crossed to selfs in height as 100 to 83.

404 ✔ (13) ― ― (3rd gen) In 4/5 of pots ✔ self flowered first. In height as 100crossed to 101self /

412 ― Nicotiana In 15/16 pots Kew crossed flowered first    (good case)

419 29 Cyclamen persicum. During 2 seasons In all 4 pots crossed flowered some weeks before selfs; so on following year.

435 30 Primula veris (equal styled var.) In all 3 pots crossed flowered first.

440 31 ― sinensis. In all 4 pots, plants from illegit union of distinct pl: flowered before illegit seedlings from self-fert: flowers.

442 (P sinensis) In 7/8 pots legit: crossed seedlings flowered before illegit self-fert seedlings.

444 33 Fagopyrum esculentum. In all 3 pots legit crossed pl: flowered from 1 to 2 days before illegit self-fert plants

455 ✔ (14) Canna In first gen: ✔ self fert plants showed some tendency to flower before crossed and in 3rd gen 9/12 in 9/12 of pots the selfs did so N.B Pl; of nearly equal heights

458 34 Zea mais. In all 4 pots a crossed flowered first.

462 34 35 (35) Phalaris canariensis. In the pots crossed did not flower before selfs, but in open ground they did so

8 cases Self flower first

5 cases simultaneous.

35 [+] 8 [+] 5 [=] 48

Great portion counted in 1 case — in 33 [+] 14 [=] 47 cases simultaneously or self-fert first


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

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