Dahlia excelsa Benth.

Species

Angiosperms > Asterales > Asteraceae > Dahlia

Characteristics

Erect perennial herb, 2-6 m tall, with tuberous roots. Stems sparsely hairy, especially about nodes, branched above at flowering, dying back to woody bases in winter. Lower cauline lvs shortly petiolate, sparsely clothed in short hairs, ovate-triangular, 2-pinnate with 6-9 primary pairs and each of lowest pair with 7-9 leaflets; petiole with 2 lateral angles on upper surface; leaflets mostly not lobed, sometimes 2-3-lobed, subsessile, ovate to elliptic, acuminate, serrate, 5-15 cm long. Upper cauline lvs 1-pinnate or simple. Capitula 9-18 cm diam., usually slightly nodding. Outer involucral bracts 5, sparsely hairy, ovate to spathulate or pandurate, 10-15 mm long, recurved at anthesis; inner bracts 8, ovate-triangular to elliptic, with broad membranous margin, 20-25 mm long. Receptacular scales ovate-triangular, acute. Ray florets c. 8; ligules pink, lavender to pinkish purple. Disc florets numerous, golden. Achenes linear, 7-17 mm long.
More
Perennial herb with tuberous roots; opposite pinnate leaves; capitula with large mauve-pink ray florets.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.5 - 4.25
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 3-5
Soil texture -
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 10-12

Usage

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

Cultivation

Can be grown by cuttings, divisions or tubers.
Mode cuttings divisions tubers
Germination duration (days) 5 - 20
Germination temperacture (C°) 18 - 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Dahlia excelsa unspecified picture

Distribution

Dahlia excelsa world distribution map, present in Mexico and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:200951-1
WFO ID wfo-0000071376
COL ID 33YGN
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Dahlia excelsa