Difference between revisions of "Argemone arizonica"
Mem. Torrey Bot. Club 21: 91. 1958.
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Latest revision as of 08:21, 30 July 2020
Plants perennial. Stems 5-8 dm, diffusely branched, often decumbent, copiously long-prickly. Leaf-blades: surfaces sparingly long-prickly on veins; basal and proximal lobed nearly to midrib, lobe length often to 5 times width; distal not clasping. Inflorescences: buds ellipsoid-oblong, body 15-18 × 12-15 mm, prickly; sepal horns slender, terete, 12-15 mm, prickly at base. Flowers 7-10 cm broad; petals white; stamens 100 or more; filaments pale-yellow; pistil 3-carpellate. Capsules narrowly ellipsoid-oblong, 35-45 × 10-14 mm (including stigma and excluding prickles), closely prickly, longest prickles 8-10 mm. Seeds ca. 2 mm.
Phenology: Flowering spring; fruiting summer.
Habitat: Precipitous slopes
Elevation: 1000-2000 m
Discussion
Of conservation concern.
Argemone arizonica grows well in Grand Canyon National Park, especially along the Kaibab and Bright Angel trails.
Selected References
None.
Lower Taxa
"dm" is not declared as a valid unit of measurement for this property.