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303b. Rhododendron araiophyllum subsp. lapidosum (T. L. Ming) M. Y. Fang, Proc. Fourth Int. Rhododendron Conf. 57. 1989.
石生杜鹃 shi sheng du juan
Rhododendron lapidosum T. L. Ming, Acta Bot. Yunnan. 3: 113. 1981.
Leaf blade narrowly elliptic-lanceolate, 5.5–7.5 × 1.3–1.7 cm; abaxial surface with glabrous midrib. Fl. Apr.
Thickets on rocky or stony slopes; ca. 1900 m. NE Yunnan.
Rhododendron lapidosum requires further investigation and may not in fact be a subspecies of R. araiophyllum. The corolla shape is apparently tubular-campanulate, quite unlike that of subsp. araiophyllum.
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