United States, Minnesota, Carlton, Along the Willard Munger State Trail, 1/4 mile east of the trail head in Carlton (town). In a brushy habitat on thin soil over bedrock. NW of NE of section;;048N;16W;07
46.6622222 -92.4161111
46.6622222° N,92.4161111° W;collector
Stamens 8-10, anthers white; compound thorns absent, simple thorns abundant A large single-stemmed, open-grown shrub 3 m tall and 9 cm in diameter; Est 2-3 days before peak anthesis (spring 1 1/2 weeks late) Collected from same stem as WRS 26409 (fruiting specimen)