Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Allium L. [136]

genus_ja: ネギ

genus_en: Onion

# spp.: 1077

pub_year: 1753

accepted: Accepted

Family: Amaryllidaceae

family_ja: ヒガンバナ

Infra familial classification: Subfamily Allioideae

distribution_en: Temp. & Subtropical Northern Hemisphere, S. Africa

description_en: Genus of about 700 species of spring-, summer-, and autumn-flowering, bulbous and rhizomatous perennials, mainly from dry and mountainous areas of the N. hemisphere. In most species, a single bulb produces clusters of offset bulbs around it, which gradually form clumps. A few species have elongated bulbs, which develop on short, fleshy rhizomes; some produce bulbils in the flowerheads. The upright to spreading, sometimes cylindrical, linear to strap-shaped, basal or stem-clasping leaves have a pungent aroma when crushed; they are often withered by flowering time. The tubular-based flowers are bell-, star-, or cup-shaped; they are borne, few to many, in usually spherical, sometimes hemispherical or ovoid, occasionally pendent umbels, mostly 1-10cm (1/2-4in) across, sometimes to 30cm (12in) across. Grow taller species in groups in a border; some have flowerheads that dry well. Grow shorter species at the front of a border or in a rock garden. Contact with the bulbs may irritate skin or aggravate some skin allergies. Several species have culinary uses, including A. sativum (garlic), A. schoenoprasum (chives), and A. tuberosum (Chinese chives).

hardiness_en: Fully hardy to frost hardy.

cultivation_en:

propagation_en: Sow seed in containers in a cold frame, when ripe or in spring; sow seed of A. schoenoprasum in drills in situ. Remove offsets of bulbous species in autumn. Divide clump-forming, rhizomatous species in spring.

pests_en: Susceptible to white rot, downy mildew, and onion fly.

description_ja:

comment: N.hemisphere

comment_ja: ネギ，タマネギ，ニンニク，チャイブ(chive)

type_species: Allium sativum

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2024-11-13 15:41 by hkokubun@mac.com

family: