Allium wallichii

Allium wallichii Kunth

Languages: English

Overview

General Description

Roots elongate, thick. Bulb solitary or clustered, cylindric; tunic yellowish brown, laciniate or fibrous to subreticulate. Leaves linear to broadly so, shorter than to subequaling scape, 5-20 mm wide, midvein distinct, base not narrowed into a petiole. Scape lateral, 20-50 cm, 3-angled, sometimes narrowly 3-winged, covered with leaf sheaths only at base. Spathe 1- or 2-valved, deciduous. Umbel hemispheric, laxly or densely flowered. Pedicels subequal, 2-4 times as long as perianth, ebracteolate. Perianth stellately spreading, recurved after anthesis, pale red, red, or purple to blackish purple, rarely white; segments oblong-elliptic to narrowly so, 5-9 mm long, 1.5-2 mm wide, apex retuse or obtuse. Filaments subulate, shorter than to subequaling perianth segments, connate at base and adnate to perianth segments. Ovary obovoid-globose, smooth; ovules 2 per locule. Style longer than ovary.

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

Description

Diagnostic Description

Allium wallichii var. wallichii is close relative of Allium wallichii var. platyphyllum, but differs from the latter in its leaves linear to broadly so (vs. oblong-lanceolate to lanceolate), base not narrowed into a petiole (vs. narrowed into a petiole), scape covered with leaf sheaths only at base (vs. leaf sheaths for ca. 1/2 its length).

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

Genetics

The chromosomal number of Allium wallichii is 2n = 14, 28 (Huang et al., 1995; Ohri et al., 1998).

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

Ecology and Distribution

Cyclicity

Flowering and fruiting from July to October.

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

Distribution

Allium wallichii is occurring in Guangxi, Guizhou, S Hunan, SW Sichuan, SE Xizang, NW Yunnan of China, Bhutan, India, Myanmar, Nepal, Sikkim.

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

Evolution

Phylogeny of Allium subgenus Amerallium was inferred from the combined ITS and ETS dataset (Nguyen et al., 2008). Results shown all Allium species with chromosome base numbers of n = 7 into subgenus Amerallium, which contains both Old World and North American species. The North American taxa were monophyletic and sister to the Old World taxa. In the Old World Amerallium clade, the monophyletic section Bromatorrhiza Ekberg (= A. wallichii and A. hookeri) was sister to a clade containing all other sections: Narkissoprason Kam. (= A. insubricum), Briseis (Salisb.) Stearn (= A. paradoxum and A. triquetrum), Arctoprasum Kirschl. (= A. ursinum), Molium (= A. moly, A. subhirsutum, A. zebdanense, A. roseum, and A. chamaemoly).

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

Habitat

Growing in forest margins, scrub, moist meadows, stream banks; 2300-4800 m.

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

Taxonomy

  • Allium bulleyanum Diels (synonym)
  • Allium bulleyanum var. tchongchanense (H. Léveillé) Airy Shaw (synonym)
  • Allium feddei H. Léveillé (synonym)
  • Allium liangshanense Z. Y. Zhu (synonym)
  • Allium polyastrum Diels (synonym)
  • Allium praelatitium H. Léveillé (synonym)
  • Allium tchongchanense H. Léveillé (synonym)
  • Allium wallichii var. albidum F. T. Wang & T. Tang (synonym)
  • Nothoscordum mairei H. Léveillé (synonym)

References

Huang, R. F., Xu J. M., & Hong Y. (1995).  A study on karyotypes and their evolutionary trends in Allium sect. Bromatorrhiza Ekberg (Liliaceae). Cathaya. 7,
Nguyen, N. H., Driscoll H. E., & Specht C. D. (2008).  A molecular phylogeny of the wild onions (Allium; Alliaceae) with a focus on the western North American center of diversity. Molecular Phylogenetics and Evolution. 47,
Ohri, D., Fritsch R. M., & Hanelt P. (1998).  Evolution of genome size in Allium (Alliaceae). Plant Systematics and Evolution. 210,