Corydalis megalosperma Z.Y.Su

Species

Angiosperms > Ranunculales > Papaveraceae > Corydalis

Characteristics

Herbs, perennial, caespitose, 5-20 cm tall, often very glaucous. Rootstock at apex with many grass-yellow residual petiolar bases. Stems several, from radical leaf axils, simple or few branched, with 1 or 2 leaves. Radical leaves many, 5-15 cm; petiole broadly vaginate; blade oblong, 3-6 × 1.5-2.5 cm, bipinnate; pinnae 2 or 3 pairs, sessile or lower ones shortly stalked; pinnules deeply divided into small crowded imbricate obovate-lanceolate mucronate lobes. Cauline leaves like radical leaves; petiole and leaf midvein broad. Raceme 7-10-flowered, dense at first, at fruiting elongating to 9 cm; lower bract 2-2.5 cm, leaflike or pinnately lobate, upper one 1-1.5 cm. Pedicel 12-15 mm in flower, at fruiting 25-30 mm, arcuately recurved. Sepals early falling, whitish, semicircular, small, fimbriate, incised. Corolla yellow; outer petals narrowly crested, attenuate to both ends; limb elliptic, acute, crest and margins usually crispate-dentate; upper petal 20-22 mm; spur cylindric, 10-12 mm; nectary extended through ca. 1/2 of spur; lower petal ca. 1 cm, shallowly crested; inner petals ca. 8 mm, apex purple-brown, at least adaxially ("internally"); claw shorter than limb. Stigma square, with 4 apical papillae, laterally and on basal lobes with geminate papillae. Capsule nutant, obovoid, 8-12 × 3-4 mm. Seeds in 1 or 2 rows, nearly orbicular, 2-2.5 mm, smooth, ± with beak; caruncle strip-form, ca. 1.5 mm, thick, not appressed, lower 1/2 black, upper 1/2 yellow-brown.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 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) -

Usage

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

Cultivation

Mode -
Germination duration (days) 30 - 60
Germination temperacture (C°) 10 - 15
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Corydalis megalosperma world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:998668-1
WFO ID wfo-0000622590
COL ID YPCP
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Corydalis megalosperma