Veronicastrum Heist. ex Fabr.

Genus

Angiosperms > Lamiales > Plantaginaceae

Characteristics

Herbs, perennial. Roots usually densely yellow tomentose when young. Rhizomes short to long, rarely absent. Stems erect or arching and rooting at apex. Leaves alternate, opposite, or whorled. Inflorescences terminal or axillary, spicate. Flowers usually crowded. Calyx 5-lobed, upper lobe slightly smaller than others. Corolla 4-lobed; tube tubular, straight or slightly curved, usually with a ring of villous hairs inside, rarely glabrous; limb actinomorphic or 2-lipped; lobes unequal in width, upper widest, lower narrowest. Stamens 2; filaments usually basally villous, rarely glabrous, adnate to upper part of corolla tube; anther locules connivent, not confluent. Stigma small, slightly dilated. Capsule ovoid to ovoid-globose, slightly compressed laterally, 2-grooved, 4-valved. Seeds numerous per capsule.
More
Cal deeply 4–5-parted, the 2 lobes of the lower lip longer than the 2 or 3 of the upper; cor tubular, nearly regular, the lobes much shorter than the tube, the upper lobe about equaling the lateral ones and wider than the lower one; stamens 2, inserted below the middle of the cor-tube, long-exsert; pollen-sacs parallel; style slender, about equaling the stamens; stigma 1, minute; fr narrowly ovoid or ellipsoid, not flattened, opening by 4 short terminal slits; tall perennials with narrow whorled lvs and slender terminal spikes of pink or white fls. 2, the other closely related, in e. Asia.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 21 - 40
Germination temperacture (C°) 12 - 15
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -