RECORD: Darwin, C. R. 1866.06.25. Leersia oryzoides. CUL-DAR111.A38. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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 volume CUL-DAR111 contains notes on illegitimate progeny of dimorphic and trimorphic plants for Darwin's book Forms of flowers (1877).

See Forms of flowers, p. 333.


(2

Imperfect Flower, but not quite mature; yet pollen-grains quite spherical in water, & scattered about when anther was torn open, so I do not suppose cd grow larger— The largest were only 5/7000 in diameter & most grains were rather under, so as 5:12 compared with perfect pollen. The grains are surprisingly thin & delicate. compared with pollen from perfect flowers. Anther 38/2000 = 19/1000 = barely 1/50 of inch in length, when anthers of perfect flowers are are rather above 1/10th or 103/1000 of inch in length — Filament (not quite mature) less than length length of anther viz 15/1000 of inch in length. In each cell of an anther of imperfect flower pollen-grains toward apex lie in single row & can be counted when anther viewed as transparent body object — in middle part is double or even almost treble row: about 35 in each anther-cell or 70 in whole anther.

The number as nothing to perfect flower — See H. Von Moll Mohl for number in Viola &c.—

Leersia oryzoides Jun 25 1866


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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 14 February, 2026