[Outline sketches of pollen from long- and short-styled yellow cowslips and from a red cowslip.]
Showing 1–16 of 16 items
[Outline sketches of pollen from long- and short-styled yellow cowslips and from a red cowslip.]
Instructions on measuring pollen of dimorphic plants.
Thanks WED for measuring cowslip pollen. Sends dimorphic flowers.
Experiment instructions.
Diagrams of short- and long-styled Pulmonaria under magnification.
Observations on style length of 150 flowers of Pulmonaria [angustifolia]. [See Forms of flowers, p. 105.]
Discusses WED’s observations on polymorphic flowers.
Sends Pulmonaria anthers, with measurements of styles and pollen counts.
Sends specimens of Menyanthes with observations and drawings [see Forms of flowers, p. 115].
Clarifies his letter of 18 May [4500].
Encloses drawings of Menyanthes and Pulmonaria anthers.
Writes of dimorphic plants.
Mentions WED’s extraordinary discovery of some pollen-grains of different sizes. The observations must be followed up.
CD would like to see Rhamnus, as an American species is dimorphic.
Sends red cowslip pollen to be measured.
CD says Meneanthes is now in flower.
CD much obliged for specimen and drawings.