Hypericum ascyron - (image 1 of 4)
Taxonomy
Family: Hypericaceae
Habitat
River banks, in moist alluvium or among rocks; occasionally in springy areas.
Associates
Distribution
Quebec to MN, south to PA, IN, and KS.
Morphology
Herbaceous perennial; stems branched, 70-150 cm; leaves lanceolate to elliptic, 4-10 cm, acute or obtuse, sessile and sometimes clasping; flowers few, mostly solitary at the ends of the branches, 4-6 cm wide; stamens numerous, united at the base into 5 sets; styles 5, united below but not persistent; stigmas capitate; fruit ovoid, 15-30 mm, 5-locular.
Notes
Flowers June to August
Wetland indicator: FAC
This is the largest of our herbaceous Hypericum spp. For some time this taxon was treated as a separate species (H. pyramidatum Aiton) but is now generally regarded as a subspecies of H. ascyron. Two other subspecies of H. ascyron occur in eastern Asia.
References
Gleason, Henry A.
and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States
and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
|
Michael Hough © 2018 |