Acer caesium

Acer caesium Wallich ex Brandis

Languages: English

Overview

General Description

Trees up to 25 m tall, andromonoecious. Bark gray. Branchlets glabrous, usually glaucous; winter buds ovoid, margin ciliate. Leaves deciduous; petiole purplish green, 10-15 cm long, glabrous; leaf blade abaxially glaucous, adaxially green, 11-21 cm long, 11-14 cm wide, papery, lateral veins 7-9 pairs, distinct abaxially, base cordate, 5-lobed, rarely 3-lobed; lobes triangular, 1-1.5 cm long, margin serrulate, apex acuminate. Inflorescence terminal, corymbose; peduncles ca. 6-7 cm long. Sepals 5, yellowish green, ca. 5 mm long, 3 mm wide. Petals 5, white, oblanceolate, ca. 5 mm long, 1.5 mm wide. Stamens 8, ca. 3-5 mm long. Disk glabrous, extrastaminal. Ovary pubescent. Fruit yellowish; nutlets convex, ca. 8 mm in diameter; wing including nutlet 4-5.5 cm, wings spreading erectly.

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

Description

Genetics

The chromosomal number of Acer caesium is 2n = 26 (Santamour, 1988; Sandhu and Mann, 1989).

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

Ecology and Distribution

Cyclicity

Flowering from May to June; fruiting in September.

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

Distribution

Acer caesium is occurring in SE Gansu, SW Henan, W Hubei, Ningxia, S Shaanxi, Sichuan, SE Xizang, NW Yunnan of China, N India, Nepal, Pakistan.

 

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

Habitat

Growing in alpine forests; 2000-3700 m.

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

Taxonomy

  • Acer caesium subsp. giraldii (Pax) A. E. Murray (synonym)
  • Acer giraldii Pax. (synonym)

References

Sandhu, P. S., & Mann S. K. (1989).  Plant chromosome number reports – VIII. Journal of Cytology and Genetics. 24,
Santamour, F.S., J.. (1988).  New chromosome counts in Acer (maple) species, sections Acer and Goniocarpa. Rhodora. 90,