Difference between revisions of "Agave americana var. expansa"
Agave Fam. Sonora, 80. 1972.
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| − | |hierarchy=Agavaceae;Agave;Agave americana;Agave americana var. expansa | + | |hierarchy=Agavaceae;Agave;Agave americana;Agave americana subsp. americana;Agave americana var. expansa |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Agavaceae]]</div><div class="higher-taxon"><small>genus</small>[[Agave]]</div><div class="higher-taxon"><small>species</small>[[Agave americana]]</div><div class="higher-taxon"><small>variety</small>[[Agave americana var. expansa]]</div></div> | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Agavaceae]]</div><div class="higher-taxon"><small>genus</small>[[Agave]]</div><div class="higher-taxon"><small>species</small>[[Agave americana]]</div><div class="higher-taxon"><small>subspecies</small>[[Agave americana subsp. americana]]</div><div class="higher-taxon"><small>variety</small>[[Agave americana var. expansa]]</div></div> |
|volume=Volume 26 | |volume=Volume 26 | ||
|mention_page=page 443, 454 | |mention_page=page 443, 454 | ||
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|authority=(Jacobi) Gentry | |authority=(Jacobi) Gentry | ||
|rank=variety | |rank=variety | ||
| − | |parent rank= | + | |parent rank=subspecies |
|synonyms=Agave abrupta | |synonyms=Agave abrupta | ||
|basionyms=Agave expansa | |basionyms=Agave expansa | ||
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|publication year=1972 | |publication year=1972 | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_942.xml |
|genus=Agave | |genus=Agave | ||
|species=Agave americana | |species=Agave americana | ||
| + | |subspecies=Agave americana subsp. americana | ||
|variety=Agave americana var. expansa | |variety=Agave americana var. expansa | ||
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| − | -->[[Category:Treatment]][[Category:Agave americana]] | + | -->[[Category:Treatment]][[Category:Agave americana subsp. americana]] |
Latest revision as of 21:18, 5 November 2020
Plants short-stemmed; rosettes dense. Leaves erect, 120–150 × 18–24 cm; blade glaucous-gray to green, typically cross-zoned; margins nearly straight to crenate, teeth 5–8 mm; apical spine conical, 2–3 cm. Scape 7–9 m. Inflorescences: lateral branches 20–30. Flowers 7–8.5 cm; perianth tube 13–14 mm; ovary 3.5–4 cm. Capsules not seen. Seeds unknown. 2n = 120.
Phenology: Flowering late spring–early summer.
Habitat: Sandy places in desert scrub and grasslands
Elevation: 500–1300 m
Distribution
Ariz., w Mexico.
Discussion
The wild expression of Agave americana var. expansa is technically a variant of subsp. americana. A cultivar derived from var. expansa was introduced into western Europe, where it was first named. That cultivar is planted occasionally in the warmer regions of the United States; it is not naturalized. The var. expansa has never been found in fruit, but it is likely that it itself is an early cultivar developed by pre-Columbian people who established it far to the west of the species range in eastern Mexico. Reproduction in var. expansa is strictly vegetative.
Selected References
None.