浙江山梅花 zhe jiang shan mei hua

Philadelphus pekinensis Ruprecht var. laxiflorus Cheng, Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 10: 113. 1936, not P. laxiflorus Rehder (1924); P. brachybotrys (Koehne) Koehne var. laxiflorus S. Y. Hu.

Shrubs 1-3 m tall. Branchlets of previous year yellow-brown or brown, those of current year brown, glabrous. Petiole 5-10 mm, glabrous; leaf blade elliptic or elliptic-lanceolate, 5-10 × 2-6 cm, abaxially hirsute along veins, adaxially sparsely strigose, veins 3-5, basifugal, base cuneate or broadly so, margin serrate, apex acuminate. Racemes 5-9(-13)-flowered, lowest ones 3-flowered; rachis 5-13 cm, glabrous; pedicels 5-12 mm. Calyx tube brown or yellow-brown, glabrous; lobes ovate or ovate-lanceolate, 4-6 × 3-4 mm, apex acuminate. Corolla discoid; petals white, elliptic or broadly so, 1.2-1.8 × 1-1.2 cm, apex rounded, sometimes retuse. Stamens 31-39, longest ones ca. 1.2 cm; anthers ovoid-oblong, ca. 1.5 mm. Disc and style glabrous. Style apically divided; stigma spatulate, 1.5-2 mm. Capsule 6-8 × 4-5 mm. Seeds ca. 2.5 mm, shortly tailed. Fl. May-Jun, fr. Jul-Sep.

* Thickets, valleys; 700-1700 m. Anhui, Fujian, Jiangsu, Zhejiang.