Flora of North America species comparison

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Hypericum ascyron

great or giant St. John's wort, great St. John's-wort

Hypericum ascyron
Distribution
from FNA
CT; IA; IL; IN; KS; MA; MD; MI; MN; MO; NY; OH; PA; VT; WI; ON; QC; Asia (e China, Japan, Korea, Siberia)
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[BONAP county map]
Discussion

Subspecies 3 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 6, p. 97.
Parent taxa Hypericaceae > Hypericum > sect. Roscyna
Sibling taxa
H. adpressum, H. anagalloides, H. apocynifolium, H. boreale, H. brachyphyllum, H. buckleyi, H. canadense, H. canariense, H. chapmanii, H. cistifolium, H. concinnum, H. crux-andreae, H. cumulicola, H. densiflorum, H. denticulatum, H. dolabriforme, H. drummondii, H. edisonianum, H. ellipticum, H. erythreae, H. fasciculatum, H. frondosum, H. galioides, H. gentianoides, H. graveolens, H. gymnanthum, H. harperi, H. hypericoides, H. kalmianum, H. lissophloeus, H. lloydii, H. lobocarpum, H. maculatum, H. majus, H. microsepalum, H. mutilum, H. myrtifolium, H. nitidum, H. nudiflorum, H. paucifolium, H. perforatum, H. prolificum, H. pseudomaculatum, H. punctatum, H. radfordiorum, H. scouleri, H. setosum, H. sphaerocarpum, H. suffruticosum, H. tenuifolium, H. tetrapetalum, H. virgatum, H. ×mitchellianum
Subordinate taxa
H. ascyron subsp. pyramidatum
Name authority Linnaeus: Sp. Pl. 2: 783. (1753)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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