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A deciduous shrub of elegant spreading habit; branches often horizontal or drooping, the branchlets in opposite rows, hollow; young shoots purple, downy. Leaves 11⁄2to 3 in. long, scarcely half as wide, rounded at the base, narrowly ovate, pointed, dull green and downy above, greyish and hairy beneath, especially when young; stalk 1⁄3 in. long. Flowers in pairs from each axil along the branchlets, all expanding upwards; calyx dry, scarcely lobed, splitting down one side; corolla yellow, 5⁄8 in. long, downy outside, the lower lip much deflexed, tube shorter than the lobes; stamens hairy at the base; style wholly hairy; stalk 1⁄4 in. long; fruits orange-red. Bot. Mag., t. 8536.
Native of China and Tibet; introduced in 1904. A notably elegant, free-growing shrub, very hardy and floriferous, showing its flowers to good advantage by producing them on the upper side of the long feathered branches. It flowers in May and June, and grows probably 8 ft or so high.
L. xerocalyx Diels