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Astilbe rubella, Lemoine. A hybrid between A. Lemoinei and A. Davidii (or A. Lemoinei x A. chinensis x A. Davidii). Similar to A. Lemoinei, but fls. rose-colored; panicle more compact than in A. Davidii. R.B.34:28. —Other forms of the same parentage are var. rutilans, Rehd. (A. rutilans, Lemoine), with rosy-carmine fls. and white stamens, and var. carminea, Rehd. (A. carminea, Lemoine), with violet carmine fls.; also Crepuscule, with flesh- colored fls.; Lumineux, with rosy carmine fls. changing to pink, plant over 3 ft. high; Magenta, with carmine fls.; Solferino, with violet-pink fls.; and Titien, with delicate pink fls., plant over 3 ft. high. A series of hybrids of A. Davidii with different species has been put into the trade under the collective name of A. Arendsii, Arends. M.D.G. 1907:546. These comprise the following crosses : A. Davidii x A. astilboides, with rosy-lilac fls. in loose and graceful feathery panicles; stamens and petals much exceeding the sepals; here belong the varieties Juno, with purplish pink fls., plant over 3 ft. high; Venus, also with purplish pink fls.; Vesta, with rosy lilac fls.; and Ceres, with lilac-pink fls. A. Davidii x A. japónica, with creamy white to pale pink or salmon fls. in dense spikes; petals and the pink stamens not much exceeding the sepals; here belongs Rose Perle. A. Davidii x A. rosea, similar to A. japonica in habit, with purplish pink to salmon or nearly white fls.; this cross may be classed with A. rubella. A. Davidii x A. Thunbergii, taller, 4—5 ft. high with large feathery panicles, their branches nodding at the tips: fls. pale pink to white.
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