Hypericum hypericoides subsp. hypericoides (Nomenclature)
Plant erect, with main stem usually unbranched from base, 0.3-1 .5 m tall, freely branched well above ground level. Leaves oblong to linear (broadest at the middle), 7-25 x 1-8.5 mm. Inflorescence-branching dichasial/lateral to pseudo-dichotomous.
Habitats of the species, but absent in the the Dominican Republic from above 2000 m.
Distribution of the species except for absence north of the line: Virginia, Kentucky, southern Missouri, Oklahoma.
Subsp. hypericoides varies in leaf width, the narrow-leaved form (Ascyrum linifolium) being found in the southern States from Louisiana to Florida as well as in the Bahamas and Bermuda (A. macrosepalum). Britton (1918) suggested that it had been carried to Bermuda by wind or birds from Florida and had there speciated, but the Bermudan plants do not differ from other narrow-leaved forms. The occurrence of this subspecies in the Azores could also be the result of long-distance transport, but it could equally have been introduced by man.