View source for Acmispon americanus var. americanus

* Scientific Name: ''Acmispon'' ''americanus'' var. ''americanus''
* Family: Fabaceae
* Common Names: American bird's-foot trefoil
* Synonyms/Misapplications: ''Lotus'' ''purshianus, Lotus'' ''unifoliolatus''
* Codon: ACMAME
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[[File: ACMAME1.jpg|thumb|Photo by Robert L. Carr. Also featured on Main Page]]
===Taxonomy===
{{Taxobox
| image =
| image_caption = 
| name = 
| regnum = [[Plant]]ae
| subregnum = Viridiplantae
| phylum = Tracheophyta
| subphylum= Spermatophytina
| classis = Magnoliopsida
| subclassis = Rosanae
| ordo = Fabales
| familia = Fabaceae
| genus = ''Acmispon'' Raf.
| species = '''''Acmispon americanus'' var. ''americanus''''' (Nutt.) Rydb.
| subspecies = 
}}
<ref>Integrated Taxonomic Information System. Retrieved from https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=820914#null</ref>

===Description===
Hairy annual herb to 6 dm tall with axillary, cream to yellow papilionaceous flowers.<ref name=":0">Hitchcock, C. L., Cronquist, A., Giblin, D.,
& Legler, B. et al. (2018). ''Flora of the Pacific Northwest: an''
illustrated manual''. Seattle: University of Washington Press, p. 128.''</ref> Stems erect to prostrate.<ref name=":1" /> Leaves mostly 3-foliate, upper leaves often becoming simple, stipules minute.<ref>Jepson Herbarium Online Flora. Retrieved from https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91832</ref> Calyx teeth longer than tube; corolla cream to yellowish; stamens 10, diadelphous; ovary simple, superior.<ref name=":0" /> Pods with 4-8 seeds, slightly constricted.<ref name=":1">WTU
Herbarium, Burke Museum, & University of Washington. Retrieved from https://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Acmispon%20americanus</ref>

===Bloom Period===
April to September<ref name=":1" />

===Distribution===
Across Washington, southern British Columbia to Mexico, inland across North America.<ref name=":0" />

===Habitat===
Sandy or rocky soils in forested or open locations.<ref name=":0" />

===Propagation===
Hot water treatment if planting by seed. Irrigate one time per month once established.<ref>California Native Plant Society: Calscape.
Retrieved from https://calscape.org/Acmispon-americanus-(American-Bird's-Foot-Trefoil)?srchcr=sc5aa1b8aa18112</ref>

===Photo Gallery===
<gallery>
File: ACMAME2.jpg| Photo by Robert L. Carr
</gallery>

===References===
<references />