Asarum maximum Hemsl.

Wild ginger (en)

Species

Angiosperms > Piperales > Aristolochiaceae > Asarum

Characteristics

Herbs. Rhizomes horizontal, 2-3 mm in diam., internodes less than 1 cm. Leaves solitary; petiole 10-23 cm, glabrous; leaf blade adaxially dull green, rarely with white blotches, narrowly to broadly ovate, or nearly hastate, 6-13 × 7-15 cm, abaxial surface glabrescent, adaxial surface pubescent along veins and margin, base cordate, lateral lobes 3-7 × 3.5-6 cm, apex acute; cataphylls ovate, 1-1.8 × 0.8-1 cm. Peduncle ascending to recurved, 1-5 cm. Calyx dark purple, campanulate-rotate, 3-4 × 4-6 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube campanulate, ca. 2.5 × 1.5-2 cm, middle portion abruptly swollen forming a robust girdle-like ring near middle abaxially lacking ridges, slightly constricted at throat, adaxially longitudinally ribbed, orifice ring absent or corrugate and not contiguous; lobes broadly ovate, 2-4 × 2-3 cm, basal 1/2 with transversely papillate-corrugate rows, base with white semicircular pulvinate area. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, obtuse. Ovary half-inferior. Styles free, apex 2-forked; stigmas lateral. Fl. Apr-May.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.35 - 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Forests in humus rich soils; at elevations from 600-800 metres.
Light 1-6
Soil humidity 5-7
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 7-9

Usage

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

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) 7 - 30
Germination temperacture (C°) 15 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Asarum maximum unspecified picture

Distribution

Asarum maximum world distribution map, present in China, Lao People's Democratic Republic, and Viet Nam

Conservation status

Asarum maximum threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:93537-1
WFO ID wfo-0000550910
COL ID H4SQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Heterotropa maxima Asarum maximum