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Show 'G2 IPOMCEA PURPUREA. CHA.P. II. . t't t . n or ch arac t er, as was indeed prove<l what In cons I u IO ·n . . hat in colour. d ffenno- somew c. by their flowers sti ~ 0 h· h may be deduced But the severa1 con clus1ons w IC I'll be more fully . t on Ipomcea w fro In the e~penmen s 1 ha ters, after all my otb er considered In the fina .c p observations have been given. OnAP. III. MIMUL US LUTE US. 63 CHAPTER III. SuROPHULARIACElE, GESNEHIACEJE, LADIATlE, ETC. l\Iimulus lutous; heigl1t, vigour, and fertility of tl1e cros~od and selffet'tilised plant~ of the first four generations-Appearance of a now, bll, and highly self-fertile variety-Offspring from a cro~s between self-fertilised plants-Effects of a cross with a fresh stock -Effects of crossing flowers on the same plant-Summary 011 Mimnlus lnteus-Digitalis purpurea, superiority of the cro~sed plants-Effects of cros~irJg flowers on the same plant-Oalceolaria -Linaria vulgaris- Verbascurn thapsus- Vandellia nummularifolia- Oleistogene flowers-Gesneria pendulina-Salvia coccineaOrigunum vulgare, great increase of the crossed plants by stolons -'rhunbt:rgia alata. IN the family of the Scrophu1ariacere I experimented on species in the six following genera: Mimulus, Digitalis, Oalceolaria, I...~inaria, Verbascum, and Vandellia. II. SCROPHULARIACElE.-MrMULus LUTEus. The plants which I raised from purchased seed varied greatly in the colour of their flowers, so that hardly two individuals wore quite alike; the corolla being of all shades of yellow, with tho most diversified blotches of purple, crimson, orange, and coppery brown. But those plants differed in no othel' respect.* Tho flowers are evidently well adapted for fertilisation by the agency of insects; and in the case of a closely allied species, ... l!. rosea, I have watched bees entering the flowers, thus getting their backs well d ust(jd with pollen ; and when they entered another flower the pollen was licked off their backs by * I sent seveml specimens with variously coloured flowers to Kew, and Dr. Hooker informs me thRt they all consi~tcd of M. luteus. ------ The flowers with much reel have been named by horticulturists as var. Youngiana. |