Actaea asiatica

Actaea asiatica H. Hara

Languages: English

Overview

General Description

Rhizome black-brown, with numerous slender fibrous roots. Stems 30-80 cm tall, terete, 4-8 mm in diameter, unbranched, basally glabrous, apically white pubescent. Leaves 2 or 3, proximal cauline leaves 3 times ternately pinnate, long petiolate; petiole 10-15 cm long; leaf blade triangular, up to 25 cm wide, abaxially glabrescent, adaxially subglabrous; terminal leaflet ovate to broadly ovate-rhombic, 4-10 cm long, 2-6 cm wide, 3-fid, margin sharply serrate; lateral leaflets ovate to obliquely ovate. Distal cauline leaves similar to proximal ones, but smaller. Inflorescence racemose, 2.5-5 cm, to 17 cm at fruiting; rachis and pedicels densely white or gray pubescent; bracts linear-lanceolate, ca. 2 mm. Pedicels 5-8 mm. Sepals obovate, 2.5-3 mm. Petals spatulate, 2-2.5 mm. Filaments 3-5 mm; anthers ca. 0.7 mm. Pedicels at fruiting 1-1.5 cm, ca. 1 mm in diameter. Fruit solitary, purple-black, ca. 6 mm in diameter. Seeds ca. 6, dark brown, ovate, ca. 3 mm long, 2 mm wide.

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

Description

Diagnostic Description

Actaea asiatica is close relative of Actaea erythrocarpa, but differs from the latter in its pedicels thickened at fruiting (vs. not thickened), ca. 1 mm in diameter (vs. 0.6 mm), fruits black (vs. red, sometimes white).

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

Genetics

The chromosomal number of Actaea asiatica is 2n = 16 (Nishikawa, 1981; Wang et al., 1994; Yang, 1998).

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

Ecology and Distribution

Cyclicity

Flowering from May to June; fruiting from July to September.

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

Distribution

Actaea asiatica is occurring in Gansu, Hebei, Heilongjiang, Hubei, Jilin, Liaoning, S Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, E Xizang, Yunnan of China, Japan, Korea, Russia (Far East).

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

Habitat

Growing in forest; 500-3000 m.

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

Taxonomy

  • Actaea acuminata Wallich subsp. asiatica (H. Hara) Luferov (synonym)
  • Actaea spicata Linnaeus var. asiatica (H. Hara) S. H. Li & Y. H. Huang (synonym)

References

[Anonymous] (1981).  Chromosome counts of flowering plants of Hokkaido (5). Reports of the Taisetsuzan Institute of Science. 16,
Wang, X. Q., Li Z. Y., & Hong D. Y. (1994).  A karyomorphological study of nine species in four genera of Ranunculaceae. Cathaya. 6,
Yang, Q. E. (1998).  Does Actaea asiatica have the most symmetric and primitive karyotype in the Ranunculaceae. Acta Phytotaxonomica Sinica. 36,