Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 144

Genus ja: クワガタソウ

Genus en: Speedwell

# spp.: 466 (from genus_families table) | 14 (from names table)

Accepted: Accepted

Family: Plantaginaceae

Family ja: オオバコ

Infra familial classification:

Distribution en: Cosmopolitan

Description en: Genus of about 250 species of annuals, perennials (including some marginal aquatics), and mostly deciduous sub-shrubs, some of them rhizomatous. They occur in swamps and moist meadows and grassland, or in open woodland to dry, sunny meadows, rocky hills, and scree, mainly in Europe. The linear to broadly lance-shaped, or oblong to rounded, entire or toothed, stalkless or short-stalked leaves are usually produced in opposite pairs, although those on the flowering stems can be alternate or whorled. Small, outward-facing flowers, 5-15mm (1/4-1/2in) across, in purple, blue, pink, or white, are borne in long, axillary or terminal racemes or spikes, or singly from the leaf axils, from spring to autumn. The petals form a short tube, with 4 or 5 spreading, often unequally sized lobes; each flower has only 2 functional stamens. Good for a mixed or herbaceous border. Use cushion- or mat-forming veronicas in a rock garden; grow less vigorous species and cultivars in a trough or in an alpine house.

Hardiness en: Fully hardy to frost hardy.

Cultivation en:

Propagation en: Sow seed in containers in a cold frame in autumn. Divide perennials in autumn or spring; for V. beccabunga, divide, or take stem-tip cuttings, in summer. Take softwood cuttings ofsubshrubs in spring.

Pests en: May suffer from downy mildew, powdery mildew, and leaf spot.

Description ja:

Comment: N.temp.

Comment ja: クワガタソウ，オオイヌノフグリ
オオカワヂシャ (V. anagallis-aquatica) は特定外来生物。

Type species:

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-19 14:42 by hkokubun@mac.com