[77]

[Letter not transcribed]

[77v]

=eolaria, Linaria, Verbascum and Vandellia. but as some of these species were those first tried the experiments were not always fully and fairly tried.

(1) Mimulus luteus ─ The plants which I raised from purchased seed varied greatly in the colour of their flowers; so that hardly two individuals were quite alike; the corolla being of all shades of yellow with the most diversified blotches of purple, crimson, orange and coppery brown. But they these plants differed in no other respect.*

The flowers are evidently well adapted to be for fertilisation by pollen brought by the agency of insects; and in the case of a

[Cross and self fertilisation, pp. 63-4: "IN the family of the Scrophulariaceae I experimented on species in the six following genera: Mimulus, Digitalis, Calceolaria, Linaria, Verbascum, and Vandellia.
II. SCROPHULARIACEAE.—Mimulus luteus.
The plants which I raised from purchased seed varied greatly in the colour of their flowers, so that hardly two individuals were quite alike; the corolla being of all shades of yellow, with the most diversified blotches of purple, crimson, orange, and coppery brown. But these plants differed in no other respect.* The flowers are evidently well adapted for fertilisation by the agency of insects; and in the case of a closely allied species, M. rosea, I have watched bees entering the flowers, thus getting their backs well dusted with pollen; and when they entered another flower the pollen was licked off their backs by
* I sent several specimens with variously coloured flowers to Kew, and Dr. Hooker informs me that they all consisted of M. luteus. The flowers with much red have been named by horticulturists as var. Youngiana. the two-lipped stigma, the lips of which are irritable and close like a forceps on the pollen-grains."]