Atriplex gardneri var. aptera
Great Basin Naturalist 55: 326. 1995
Phenology: Flowering summer–fall.
Habitat: Saline, often moist, fine-textured substrates
Elevation: 400-1100 m
Alta., Sask., Mont., Nebr., N.Dak., S.Dak., Wyo.
Atriplex gardneri var. aptera is a Great Plains-Steppe endemic.
The concept of Atriplex aptera is based on recurring and at least partially stabilized introgressant populations derived through hybridization between A. gardneri and A. canescens. Hence, the plants do not form a traditionally conceived taxon in the sense of being monophyletic. They are, however, of frequent occurrence, evidently fertile and long lived, and are taxon-like in distribution. While intermediate in many ways, they are habitually most similar to A. gardneri but bear yellow staminate flowers and the fruiting bracteoles are either winged as in A. canescens or the tubercles are aligned in four rows. They tend to occupy similar saline habitats as those occupied by A. gardneri. Despite the origin of the A. aptera material, and regardless of its local abundance, it does not appear to overwhelm either of the parental species. Staminate specimens of A. aptera are difficult, if not impossible, to distinguish from A. gardneri var. gardneri or A. canescens.
|Author||Stanley L. Welsh +|
|Authority||(A. Nelson) S. L. Welsh & Crompton +|
|Basionyms||Atriplex aptera +|
|Common name||Nelson’s saltbush +|
|Distribution||Alta. +, Sask. +, Mont. +, Nebr. +, N.Dak. +, S.Dak. + and Wyo. +|
|Elevation||400-1100 m +|
|Habitat||Saline, often moist, fine-textured substrates +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||Bee F. Gunn +|
|Phenology||Flowering summer–fall. +|
|Publication title||Great Basin Naturalist +|
|Publication year||1995 +|
|Source xml||https://email@example.com/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V4/V4 738.xml +|
|Synonyms||Atriplex canescens subsp. aptera +|
|Taxon family||Chenopodiaceae +|
|Taxon name||Atriplex gardneri var. aptera +|
|Taxon parent||Atriplex gardneri +|
|Taxon rank||variety +|
|Volume||Volume 4 +|