View source for Aeonium

{{Treatment/ID
|accepted_name=Aeonium
|accepted_authority=Webb & Berthelot
|publications={{Treatment/Publication
|title=Hist. Nat. Îles Canaries
|place=3(2,1): 184, plates 28–35. 1840 ,
}}
|basionyms=
|synonyms=
|hierarchy=Crassulaceae;Aeonium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Crassulaceae]]</div><div class="higher-taxon"><small>genus</small>[[Aeonium]]</div></div>
|etymology=Dioscoridean name for A. arboreum
|volume=Volume 8
|mention_page=page 149, 168
|treatment_page=page 167
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>[perennial herbs], not viviparous, [1–]7–10[–20] dm, glabrous or pubescent. <b>Stems</b> erect, branched [simple], woody or fleshy. <b>Leaves</b> persistent, crowded in rosettes at ends of branches, alternate, sessile, not connate basally; blade oblong-lanceolate or obovate, laminar to terete, 3–15 cm, fleshy, base not spurred, margins ciliate; veins not conspicuous. <b>Inflorescences</b> terminal cymes. <b>Pedicels</b> present. <b>Flowers</b> erect or spreading, [6–]7–12[–16]-merous; sepals connate basally, all alike; petals spreading or erect, distinct or nearly so, cream or bright yellow; calyx and corolla not circumscissile in fruit; nectaries mostly rectangular; stamens 2 times as many as sepals; filaments adnate on corolla base; pistils erect, distinct or nearly so; ovary base rounded; styles 2+ times shorter than ovary. <b>Fruits</b> erect. <b>Seeds</b> ellipsoidal, ribbed, finely cross-ribbed. <b>x</b> = 18.</span><!--

-->{{Treatment/Body
|distribution=Calif.;Asia (Yemen);Africa;Atlantic Islands (especially Canary Islands).
|discussion=<p>Species 31 (2 in the flora).</p><!--
--><p>Aeonium and the other polymerous-flowered Macaronesian Crassulaceae were formerly included in the polymerous-flowered Sempervivum. From studies in DNA and molecular systematics, T. H. M. Mes (1995) concluded that Aeonium and these related genera probably evolved from North African Sedum-like ancestors and are only more distantly related to Sempervivum. He thought that the wide range of growth-forms in Aeonium, including the woody habit, is derived from herbaceous ancestors.</p>
|tables=
|references={{Treatment/Reference
|id=liu1989a
|text=Liu, H. Y. 1989. Systematics of Aeonium (Crassulaceae). Taichung. [Natl. Mus. Nat. Sci. [Taiwan], Special Publ. 3.]
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Rosette leaves 50-75, blade bright green, 5-9(-15) cm, 1.5-3 mm thick; petals 9-11, spreading, bright yellow.
|[[Aeonium arboreum|Aeonium arboreum]]
|-id=key-0-1
|1
|Rosette leaves 15-25, blade gray-green, 3-6 cm, 2-5 mm thick; petals 7-9, erect, cream.
|[[Aeonium haworthii|Aeonium haworthii]]
|}
</div></div><!--

-->{{#Taxon:
name=Aeonium
|author=Reid V. Moran
|authority=Webb & Berthelot
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Crassulaceae
|distribution=Calif.;Asia (Yemen);Africa;Atlantic Islands (especially Canary Islands).
|introduced=true
|reference=liu1989a
|publication title=Hist. Nat. Îles Canaries
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V8/V8_336.xml
|genus=Aeonium
}}<!--

-->[[Category:Treatment]][[Category:Crassulaceae]]