Overview

Comprehensive Description

General Description

Trees or shrubs, 10-12 m tall. Branchlets dark reddish brown, terete, glabrous, with few inconspicuous lenticels; buds ovoid to narrowly ovoid, 6-10 mm, apex acute; scales several, brown, glabrous. Leaves simple; petiole 1-2 cm, initially puberulent, glabrate; leaf blade grayish green abaxially, narrowly elliptic or narrowly ovate to obovate-elliptic, 7-12 cm long, 3-7 cm wide, lateral veins 10-12 (-18) pairs, nearly parallel and terminating in marginal teeth, abaxially puberulent along veins, adaxially glabrous, base broadly cuneate to rounded, margin obtusely crenate, apex acuminate, rarely acute. Inflorescences compound-corymbose, 3.5-5 × 4-6 cm, many flowered; rachis and pedicels sparsely brownish yellow pubescent. Pedicel 5-8 mm. Flowers 6-10 mm in diameter. Hypanthium campanulate, abaxially puberulous. Sepals triangular-ovate, 1.5-2.5 mm, apex ± obtuse or acute. Petals white, broadly ovate to obovate, 3-5 mm, apex obtuse. Stamens 20; anthers purple, shorter than petals. Styles 4-5, not exceeding stamens, glabrous, connate basally. Fruit brown, globose or obovoid, 1-1.4 cm long, 8-10 mm wide, glabrous, 4-5-loculed, distinctly but minutely lenticellate, apex with an annular scar.
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Distribution

Localities documented in Tropicos sources

Sorbus caloneura (Stapf) Rehder:
China (Asia)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, SE Yunnan.
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Sorbus caloneura is occurring in Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, SE Yunnan of China.
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Source: Plants of Tibet

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Physical Description

Morphology

Description

Trees or shrubs, 10–12 m tall. Branchlets dark reddish brown, terete, glabrous, with few inconspicuous lenticels; buds ovoid to narrowly ovoid, 6–10 mm, apex acute; scales several, brown, glabrous. Leaves simple; petiole 1–2(–3) cm, initially puberulent, glabrate; leaf blade grayish green abaxially, narrowly elliptic or narrowly ovate to obovate-elliptic, 7–12 × 3–7 cm, lateral veins (8–)10–12(–18) pairs, nearly parallel and terminating in marginal teeth, abaxially puberulent along veins, adaxially glabrous, base broadly cuneate to rounded, margin obtusely crenate, apex acuminate, rarely acute. Inflorescences compound-corymbose, 3.5–5 × 4–6 cm, many flowered; rachis and pedicels sparsely brownish yellow pubescent. Pedicel 5–8 mm. Flowers 6–10 mm in diam. Hypanthium campanulate, abaxially puberulous. Sepals triangular-ovate, 1.5–2.5 mm, apex ± obtuse or acute. Petals white, broadly ovate to obovate, 3–5 mm, apex obtuse. Stamens 20; anthers purple, shorter than petals. Styles 4 or 5, not exceeding stamens, glabrous, connate basally. Fruit brown, globose or obovoid, 1–1.4 cm × 8–10 mm, glabrous, 4- or 5-loculed, distinctly but minutely lenticellate, apex with an annular scar. Fl. Apr–May, fr. Aug–Oct.
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Diagnostic Description

Sorbus caloneura var. caloneura is close relative of Sorbus caloneura var. kwangtungensis, but differs from the latter in its 1-2 cm (vs. 3 cm) petiole, 10-12 (-18) (vs. 8-10) pairs lateral veins.
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Ecology

Habitat

Mixed forests in mountain regions, valleys; 600--2100 m.
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Growing in mixed forests in mountains regions, valleys; 600-2100 m.
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© Wen, Jun

Source: Plants of Tibet

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Life History and Behavior

Cyclicity

Flowering from April to May; fruiting from August to October.
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Evolution and Systematics

Evolution

Recent studies (Robertson et al., 1991; Potter et al., 2007; Campbell et al., 2007) treat Sorbus in a narrower sense to include only the pinnate-leaved species of subgenus Sorbus, raising several of the other subgenera to generic rank.
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