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Closely allied to amphicorne, and the fls. of both have the same general appearance, but in Incarvillea the calyx-lobes are awl-shaped, while in amnphicorne the calyx is truncate or shortly dentate; also the seeds of Incarvillea have an entire hyaline wing, while in amphicorne the seeds have a wing that is cut into long thin strips or hairs. The two genera form a small but remarkable group, characterized by their caps, opening by the ventral suture only. Calyx campanulate, 5-lobed; corolla-tube elongated, enlarging: limb somewhat 2-lipped, the lobes 5, spreading and broad; stamens 4, included, didynamous; disk annular or ring- like; ovary 2-loculed: fr. a narrow more or less curved caps, with many seeds: plant erect, branching or simple: lvs. alternate, 2-3-pinnate or simple, with narrow segms.: fls. large, in terminal clusters, red to yellow. — Species about a dozen, Turkestan, Tibet, China. The general experience seems to be that these plants need rather more winter protection than most hardy herbaceous perennials. A light, sandy loam, well enriched and deeply worked, suits them well, and they like a sheltered position in a rather warm, sunny place. Prop, by division or seed.

Closely allied to amphicorne, and the fls. of both have the same general appearance, but in Incarvillea the calyx-lobes are awl-shaped, while in amnphicorne the calyx is truncate or shortly dentate; also the seeds of Incarvillea have an entire hyaline wing, while in amphicorne the seeds have a wing that is cut into long thin strips or hairs. The two genera form a small but remarkable group, characterized by their caps, opening by the ventral suture only. Calyx campanulate, 5-lobed; corolla-tube elongated, enlarging: limb somewhat 2-lipped, the lobes 5, spreading and broad; stamens 4, included, didynamous; disk annular or ring- like; ovary 2-loculed: fr. a narrow more or less curved caps, with many seeds: plant erect, branching or simple: lvs. alternate, 2-3-pinnate or simple, with narrow segms.: fls. large, in terminal clusters, red to yellow. — Species about a dozen, Turkestan, Tibet, China. The general experience seems to be that these plants need rather more winter protection than most hardy herbaceous perennials. A light, sandy loam, well enriched and deeply worked, suits them well, and they like a sheltered position in a rather warm, sunny place. Prop, by division or seed.

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