Aeonium haworthii Webb & Berthel.

Haworth's aeonium (en), Éonie de Haworth (fr), Aéonium de Haworth (fr)

Species

Angiosperms > Saxifragales > Crassulaceae > Aeonium

Characteristics

Small, bushy, much-branched shrub to c. 60 cm high, often forming a dense spreading clump; stems to c. 1.5 cm diam.; lf scars indistinct. Rosettes terminal, mostly 5-11-(14) cm diam., rather flattened. Outer rosette lvs to c. 7-(9) × 3-(3.5) cm, (3)-5-7 mm thick, obovate to broadly obovate-spathulate, usually glaucous, occasionally ± glaucescent (especially if shaded), glabrous on both surfaces, ± concave above and slightly keeled and convex on lower surface; margins ciliolate, red at least towards the mucronate apex. Flowering shoots terminal but vegetative growth often continued from lateral branches beneath; axis moderately stout, spreading, red, glabrous, with leaflike bracts numerous and somewhat decreasing towards infl. Infl. a broadly pyramidal panicle, rounded at the top, usually 10-24 cm long and nearly as wide; fls ± densely secund along branches. Calyx lobes 3-6 mm long, glabrous, narrowly triangular, triangular or triangular-ovate. Petals (6)-8-10, 8-12 × 2-4 mm, linear-elliptic, lanceolate-elliptic, or ± elliptic, whitish or cream, often with a pink flush and a green keel outside, sometimes pale yellow. Stamens white or pink, the inner whorl 5.5-9.5 mm long, the outer whorl usually slightly shorter or sometimes slightly longer. Carpels white or pinkish. Scales 0.5-1 mm long, square or ± rectangular, often emarginate. Seeds 0.6-0.7 mm long, obovoid-oblong, minutely longitudinally streaked.
More
Perennial or monocarpic; stems trunk-like, 20-c. 80 cm high, c. 1-2 cm diam., not branched or with few branches, with numerous narrow lf scars. Rosettes terminal, usually 10-18 cm diam., flattened except in summer. Outer rosette lvs to 9-(12) × 3.5 cm, 2-4-(5) mm thick, green, obovate or obovate-spathulate, glabrous on both surfaces, slightly concave on upper, flat on lower; margins ciliate, mostly green, sometimes slightly red towards the mucronate apex. Flowering shoots terminal, either the whole plant or the stem bearing the infl. dying after flowering; axis ± stout, usually tall and erect, glabrous, occasionally glabrate, with leaflike bracts usually present at peak flowering. Infl. a broadly pyramidal panicle, obtuse or rounded to flat at top, on main stem usually 12-20 cm long and almost as wide; fls fairly densely arranged, somewhat secund on branches. Calyx lobes 2.5-4 mm long, glabrous, triangular or triangular-lanceolate. Petals (8)-9-10, 8-11 × c. 2-3 mm, linear, linear-elliptic or linear-lanceolate, greenish white, cream, greenish yellow or pale yellow. Stamens of inner whorl 5.5-9 mm long, the outer whorl usually slightly shorter; stamens and carpels whitish, cream, pale green, greenish yellow, or pale yellow. Scales 0.6-1.5 mm long, almost rectangular or rectangular-cuneate, ± truncate or retuse. Seeds 0.6-0.9 mm long, narrowly obovoid-oblong, minutely longitudinally streaked.
Shrubs closely dome-shaped, 7 dm, with many adventitious woody prop roots. Stems branched, 3-10 mm thick, woody; bark rough-reticulate and fissured. Leaves: rosettes lax, concave, 15-25-leaved, to 1 dm diam.; blade gray-green, often red-edged, obovate, 3-6 cm, 2-5 mm thick, firm, marginal cilia curved forward, broad-based, surfaces glabrous. Cymes lax, flat-topped, 0.5-1.5 dm, glabrous. Flowers bell-shaped, 1 cm diam.; calyx glabrous; petals 7-9, erect, cream. 2n = 72.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.3 - 0.5
Mature height (meter) 0.55 - 0.65
Root system adventitious-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 5-9
Soil humidity 1-5
Soil texture 3-8
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 9-10

Usage

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

Cultivation

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

Images

Habit

Aeonium haworthii habit picture by Kim P. (cc-by-sa)

Leaf

Aeonium haworthii leaf picture by Johnny Poppyseed (cc-by-sa)
Aeonium haworthii leaf picture by Daniel Barthelemy (cc-by-nc)
Aeonium haworthii leaf picture by Maxime Verrando (cc-by-sa)

Flower

Aeonium haworthii flower picture by Rogerio Pinto (cc-by-sa)
Aeonium haworthii flower picture by Branco Carla (cc-by-sa)

Fruit

Aeonium haworthii fruit picture by Daniel Barthelemy (cc-by-nc)

Distribution

Aeonium haworthii world distribution map, present in Spain, France, Gibraltar, New Zealand, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:272228-1
WFO ID wfo-0000521658
COL ID 64Y27
BDTFX ID 1048
INPN ID 80332
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Sempervivum haworthii Aeonium haworthii