Trigonotis mairei (H.Lév.) I.M.Johnst.

Species

Angiosperms > Boraginales > Boraginaceae > Trigonotis

Characteristics

Herbs perennial. Rhizomes blackish. Stems erect, 40-50 cm tall, strigose; stem leaves widely spaced; petiole 2-7 cm; leaf blade ovate to broadly elliptic, 4-6 × 2.5-5 cm, sparsely strigose, apex obtuse to emarginate, mucronate. Inflorescences with distinct peduncles, to 10 cm, ebracteate. Pedicel obliquely spreading, to 4 mm in fruit. Calyx lobes oblanceolate, ca. 2.5 mm, strigose, apex acute. Corolla blue-purple; tube ca. 1.8 mm; throat appendages narrow, thin; limb 3.5-4 mm wide; lobes suborbicular, ca. 1.8 mm. Anthers elliptic, ca. 0.8 mm., apex rounded. Mature nutlets dark brown, semiglobose-tetrahedral, ca. 1 mm, dorsiventrally compressed, tuberculate, adaxial bottom surface convex, juncture of 2 lateral surfaces prominent; abaxial surfaces convex, crustaceous, narrowly ribbed around margin, sessile.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 6-10

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Trigonotis mairei world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:121341-1
WFO ID wfo-0001216143
COL ID 58TJ5
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Trigonotis muriculata Trigonotis mairei Omphalodes mairei