Difference between revisions of "Agave americana var. expansa"
Agave Fam. Sonora, 80. 1972.
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|common_names=Spreading century plant | |common_names=Spreading century plant | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Agave expansa | |name=Agave expansa | ||
|authority=Jacobi | |authority=Jacobi | ||
| + | |rank=species | ||
| + | |publication_title=Abh. Schles. Ges. Vaterl. Cult., Abth. Naturwiss. (Naturwiss.-Med. Abth.) | ||
| + | |publication_place=1868: 151. 1868 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Agave abrupta | |name=Agave abrupta | ||
|authority=Trelease | |authority=Trelease | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Agavaceae;Agave;Agave americana;Agave americana var. expansa | |hierarchy=Agavaceae;Agave;Agave americana;Agave americana var. expansa | ||
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name=Agave americana var. expansa | name=Agave americana var. expansa | ||
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|authority=(Jacobi) Gentry | |authority=(Jacobi) Gentry | ||
|rank=variety | |rank=variety | ||
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|publication year=1972 | |publication year=1972 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V26/V26_942.xml |
|genus=Agave | |genus=Agave | ||
|species=Agave americana | |species=Agave americana | ||
Revision as of 22:45, 16 December 2019
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.