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FOC | Family List | FOC Vol. 14 | Ericaceae | Orthilia

1. Orthilia obtusata (Turczaninow) H. Hara, J. Jap. Bot. 20: 328. 1944.

钝叶单侧花 dun ye dan ce hua

Pyrola secunda Linnaeus var. obtusata Turczaninow, Bull. Soc. Imp. Naturalistes Moscou 21(4): 507. 1848; Orthilia nummularia (Ruprecht) Y. L. Chou; ?O. obtusata var. xizangensis Y. L. Chou; O. secunda (Linnaeus) House var. nummularia (Ruprecht) H. Hara; O. secunda subsp. obtusata (Turczaninow) Böcher; O. secunda var. obtusata (Turczaninow) House; Pyrola nummularia (Ruprecht) Ruprecht ex Komarov; P. obtusata (Turczaninow) Turczaninow ex Komarov; P. secunda var. nummularia Ruprecht; P. secunda subsp. obtusata (Turczaninow) Hultén; P. secunda var. pumila Chamisso; Ramischia obtusata (Turczaninow) Freyn; R. secunda (Linnaeus) Garcke subsp. obtusata (Turczaninow) Andres.

Shrubs evergreen, herbaceous, 4–15 cm high. Rhizome long branched. Leaves subverticillate at base of stem; petiole 0.5–1.5 cm; leaf blade dark green abaxially, light green adaxially, broadly ovate, 1.2–2.3 × 1–2 cm, thinly leathery, base rounded or obtuse to truncate, margin crenulate-serrulate, apex obtuse or nearly rounded. Scape slender, loosely and minutely papillose, scales 1–3 at base, ovate-lanceolate, 3–5 mm. Raceme 1.5–4 mm, with 4–8 rather densely arranged flowers along one side. Bracts broadly lanceolate, 2–3 mm, membranous, apex abruptly acute. Pedicel ca. 2 mm, slender, prominently papillose. Sepals ovate-orbicular, ca. 1 mm, margin minutely toothed, apex obtuse. Petals broadly elliptic, 4–5 × 2–3 mm, margin toothed. Anthers 1.5–1.8 mm, apex truncate; pores 0.6–0.9 mm wide. Style exserted, straight, (1.5–)2–4 mm; stigma peltate with 5 shallow lobes. Capsules depressed-globose, ca. 4 mm in diam. Fl. Jul, fr. Jul–Aug. 2n = 38.

Coniferous forests. Gansu, Heilongjiang, Nei Mongol, Qinghai, Shanxi, N Sichuan, Xinjiang, Xizang [Mongolia, ?Russia (Siberia)].


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