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FOC | Family List | FOC Vol. 9 | Rosaceae | Rubus

103. Rubus tephrodes Hance, J. Bot. 12: 260. 1874.

灰白毛莓 hui bai mao mei

Shrubs scandent, to 3–4 m tall. Branchlets brown or purplish brown, densely gray tomentose, with sparse, curved prickles, ± with unequal long glandular hairs and bristles 1–3(–5) mm or without bristles. Leaves simple; petiole 1–3 cm, tomentose, with sparse, minute prickles or glandular hairs, bristly; stipules caducous, free, 5–8 mm, margin laciniate or pectinately parted, tomentose-villous; blade suborbicular, 5–11 × 5–10 cm, palmately 5-veined, lateral veins 3 or 4 pairs, abaxially densely gray tomentose, with sparse, small prickles and bristles along midvein, adaxially pilose or with sparse, glandular hairs, base cordate, margin 5–7-lobed, irregularly serrate, apex acute or obtuse. Inflorescences terminal, cymose panicles, 10–16 cm, many flowered; rachis and pedicels tomentose-villous, with sparse, glandular hairs and bristles; bracts 5–7 mm, pectinately lobed; lobes linear, tomentose-villous. Pedicel 4–10 mm. Flowers ca. 1 cm in diam. Calyx densely gray tomentose, usually without glandular hairs and bristles; sepals ovate, 4–7 × 3–5 mm, margin entire, apex acute. Petals white, suborbicular to oblong, slightly shorter or nearly as long as sepals, pilose, base shortly clawed. Stamens many, ca. as long as petals; filaments slightly broadened toward base. Pistils 30–50, longer than stamens; style and ovary glabrous. Aggregate fruit purplish black, globose, 1–1.5 cm in diam., glabrous, with many drupelets; pyrenes rugose. Fl. Jun–Aug, fr. Aug–Oct. 2n = 28*.

Mountainous regions and summits, foothills, slopes, roadsides, thickets, montane valleys; below 1500 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Taiwan, Zhejiang.

The name Rubus megalothyrsus needs to be lectotypified in order to place the name into the synonymy of either R. tephrodes var. tephrodes or var. ampliflorus.

1 Plants without glandular hairs and bristles or sometimes only partly sparsely stipitate glandular or bristly.   103d var. ampliflorus
+ Plants with glandular hairs or bristly.   (2)
2 (1) Plants only with glandular hairs 1–1.5 mm, without bristles.   103c var. holadenus
+ Plants with glandular hairs and bristles.   (3)
3 (2) Plants ± with short glandular hairs less than 3 mm and bristles 1–3 mm.   103a var. tephrodes
+ Plants with dense long glandular hairs and bristles to 5 mm.   103b var. setosissimus

Lower Taxa


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