Aeonium haworthii

Salm-Dyck ex Webb & Berthelot

Hist. Nat. Îles Canaries 3(2,1): 193. 1841,.

IntroducedIllustrated
Treatment appears in FNA Volume 8. Treatment on page 168.

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.


Phenology: Flowering late spring.
Habitat: North-facing cliffs in canyons and above sea
Elevation: 0-300 m

Distribution

V8 339-distribution-map.gif

Introduced; Calif., Atlantic Islands (Canary Islands), Atlantic Islands (Tenerife)

Discussion

Aeonium haworthii, grown in Californian gardens, is well established locally on north-facing cliffs, both in Aliso Canyon, Orange County, and above the sea at La Jolla, San Diego County.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Aeonium haworthii"
perigynous +  and hypogynous +
Reid V. Moran +
Salm-Dyck ex Webb & Berthelot +
fissured +
lobed +  and toothed +
obovate +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not circumscissile +
whorled +, opposite +  and alternate +
not circumscissile +
flat-topped +
Calif. +, Atlantic Islands (Canary Islands) +  and Atlantic Islands (Tenerife) +
0-300 m +
[6-]7-12[-16]-merous +
1 cm10 mm <br />0.01 m <br /> (?) +
spreading;erect +
North-facing cliffs in canyons and above sea +
axillary +  and terminal +
alternate +  and crowded +
persistent +
connate +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
perigynous +  and hypogynous +
nearly +  and distinct +
Flowering late spring. +
(3-)4-5(-12)[-30+]-carpellate +
nearly +  and distinct +
Hist. Nat. Îles Canaries +
cross-ribbed +  and ribbed +
ellipsoidal +
1 +  and many +
Introduced +  and Illustrated +
adnate +  and free +
antipetalous +
2 times as many as sepals +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
distinct +
2+ times shorter than ovary +
Aeonium haworthii +
species +
not conspicuous +
perennial +, biennial +  and annual +
pubescent +  and glabrous +