Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Aster L. [124]

genus_ja: シオン

genus_en:

# spp.: 186

pub_year: 1753

accepted: Accepted

Family: Asteraceae

family_ja: キク

Infra familial classification: Subfamily Asteroideae

distribution_en: Temp. Eurasia to Jawa, NW. Africa, Subarctic America to NW. U.S.A.

description_en: Genus of about 250 species of annuals, biennials, perennials, and subshrubs from a variety of habitats, including well-drained, mountainous sites to moist woodland, in the N. hemisphere, particularly North America. The few shrubby species are mainly from South Africa. Most asters have alternate, entire, simple, lance-shaped leaves, some hairless, some softly hairy. The daisy-like flowerheads are either solitary or borne in terminal corymbs, racemes, or panicles on erect to spreading, usually branched stems; they have strap-shaped, female ray-florets in white, pink, blue, or purple, and tubular, hermaphrodite, usually yellow disc-florets. There are asters for almost all garden situations, including borders and rock gardens, streamsides, dry sites, and wildflower gardens. In frost-prone areas, grow the tender, shrubby species in a cool greenhouse.

hardiness_en: Fully hardy to frost tender.

cultivation_en:

propagation_en: Sow seed in containers in a cold frame in spring or autumn. Divide or separate runners, preferably in spring, otherwise in autumn; replant only vigorous, young shoots. Root basal cuttings of A. amellus, A. x frikartii, and A. thomsonii in spring.

pests_en: Vulnerable to eelworms, aphids, slugs, snails, Fusarium wilt, leaf spot, and grey mould (Botrytis). A. novi-belgii cultivars are prone to powdery mildew and tarsonemid mites.

description_ja:

comment: America, Eurasia

comment_ja: シオン，クジャクアスター

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2024-07-31 10:37 by hkokubun@mac.com

family: