Trigonotis petiolaris Maxim.

Species

Angiosperms > Boraginales > Boraginaceae > Trigonotis

Characteristics

Herbs perennial, densely cespitose, with short thick caudex. Stems numerous, cespitose, erect to ascending, 15-20 cm tall, sparsely fine strigose. Petiole of basal leaves 2-4 cm, sparsely strigose; leaf blade oblong to rotund, unequal in size, 0.7-4 × 0.7-1.5 cm, sparsely strigose, base rounded to subcordate, rarely broadly cuneate, apex rounded, mucronate. Upper stem leaves short petiolate, elliptic. Inflorescences terminal; bracts 2 or 3, basal, leaflike. Pedicel spreading or subhorizontal, filiform, 1-2.5 cm. Calyx lobes ovate, 1.5-2 mm, apex acute. Corolla light blue; tube ca. 1 × 1.5 mm; throat appendages ca. 0.5 mm; limb ca. 3 mm wide; lobes suborbicular. Nutlets dark brown, oblique subulate, trigonous-tetrahedral, pubescent, adaxial bottom surface slightly convex, 2 lateral surfaces flat, at their juncture 1 longitudinally ribbed; abaxial surfaces convex, triangular-ovate, ca. 1.5 mm, acutely 3-ribbed, apex acute; stipe short, curved.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.2
Root system -
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 petiolaris world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:121358-1
WFO ID wfo-0001216178
COL ID 58TJQ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Trigonotis petiolaris