Sorbus caloneura

Sorbus caloneura (Stapf) Rehder

Languages: English

Overview

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.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Description

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.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Ecology and Distribution

Cyclicity

Flowering from April to May; fruiting from August to October.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Distribution

Sorbus caloneura is occurring in Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, SE Yunnan of China.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

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.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Habitat

Growing in mixed forests in mountains regions, valleys; 600-2100 m.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Taxonomy

  • Micromeles caloneura Stapf (synonym)
  • Aria caloneura (Stapf) H. Ohashi & H. Iketani (synonym)
  • Pyrus caloneura (Stapf) Bean (synonym)

References

Campbell, C. S., Evans R. C., Morgan D. R., & Dickinson T. A. (2007).  Phylogeny of subtribe Pyrinae (formerly the Maloideae, Rosaceae): Limited resolution of a complex evolutionary history. (ArsenaultM P., Ed.).Plant Systematics and Evolution. 266,
Potter, D., Eriksson T., Evans R. C., & Oh S. H. (2007).  Phylogeny and classification of Rosaceae. (SmedmarkJ E E., MorganD R., KerrM S., CampbellC S., Ed.).Plant Systematics and Evolution. 266,
Robertson, K. R., Phipps J. B., Rohrer J. R., & Smith P. G. (1991).  A Synopsis of Genera in Maloideae (Rosaceae). Systematic Botany. 16,