Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 745

Genus ja:

Genus en: Scorpion weed

# spp.: N/A (from genus_families table) | 4 (from names table)

Accepted: Accepted

Family: Boraginaceae

Family ja: ムラサキ

Infra familial classification:

Distribution en:

Description en: Genus of about 150 species of usually erect annuals, biennials, and perennials from variable habitats, including stony slopes, scrub, and woodland, in North and South America. The usually pinnate, sometimes simple leaves are broadly ovate to elliptic or linear, and mostly alternate, the lower ones some-times opposite. They produce terminal cymes, racemes, or panicles of tubular, bell-shaped, or bowl-shaped, blue, violet, white, or yellow flowers, each with 5 narrow, spreading lobes, and with prominent styles and stamens. The annual species are suitable for a border or a wildlife garden; their nectar-rich flowers attract bees and other insects. Grow P. sericea in an alpine house or scree bed; it resents winter wet. Contact with foliage may aggravate skin allergies.

Hardiness en: Fully hardy.

Cultivation en:

Propagation en: Sow seed of annuals in situ in spring or early autumn. Sow seed of P. sericea in containers in a cold frame m autumn.

Pests en: P. sericea is susceptible to aphids and red spider mites under glass.

Description ja:

Comment: W. N.America

Comment ja: ハゼリソウ

Type species:

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-03 21:57