Aeonium arboreum

(Linnaeus) Webb & Berthelot

Hist. Nat. Îles Canaries 3(2,1): 185. 1840,.

Introduced
Basionym: Sempervivum arboreum Linnaeus Sp. Pl. 1: 464. 1753
Treatment appears in FNA Volume 8. Treatment on page 168.

California

Distribution

Introduced; Calif., Atlantic Islands (Canary Islands), also s Europe, n Africa (Mediterranean coast)

Discussion

Varieties 3 (1 in the flora).

Selected References

None.

... more about "Aeonium arboreum"
perigynous +  and hypogynous +
Reid V. Moran +
(Linnaeus) Webb & Berthelot +
Sempervivum arboreum +
lobed +  and toothed +
terete +, obovate +  and oblong-lanceolate +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
not circumscissile +
whorled +, opposite +  and alternate +
not circumscissile +
Calif. +, Atlantic Islands (Canary Islands) +, also s Europe +  and n Africa (Mediterranean coast) +
[6-]7-12[-16]-merous +
spreading;erect +
axillary +  and terminal +
alternate +  and crowded +
persistent +
connate +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
perigynous +  and hypogynous +
nearly +  and distinct +
erect +  and spreading +
(3-)4-5(-12)[-30+]-carpellate +
nearly +  and distinct +
Hist. Nat. Îles Canaries +
cross-ribbed +  and ribbed +
ellipsoidal +
1 +  and many +
Introduced +
adnate +  and free +
antipetalous +
2 times as many as sepals +
fleshy +  and woody +
distinct +
2+ times shorter than ovary +
Aeonium arboreum +
species +
not conspicuous +
perennial +, biennial +  and annual +
pubescent +  and glabrous +