Hypericum denticulatum Walter. Section: Brathys. Common name: Strict St. John's-wort. Phenology: Jul-Sep. Habitat: Wet pine savannas, wet pine flatwoods, adjacent ditches, borrow scrapes, blackwater stream shores. Distribution: Se. NY (Long Island) and s. NJ south to e. GA (McIntosh County) (Sorrie 1998b) on the Coastal Plain; disjunct inland in c. and w. NC, sc. TN, and in s. AL.
ID notes: The flowers of H. denticulatum, H. erythreae, H. harperi, H. radfordiorum, and H. virgatum are rotate (with petals curved to the right when looking down on the flower from above) and with a somewhat coppery yellow.
Origin/Endemic status: Endemic
Taxonomy Comments: See discussion under H. virgatum.
Synonymy ⓘ: = FNA6, K4, NS, NY, Pa, POWO, S, Tn, Va, Allison (2011); = Hypericum denticulatum Walter ssp. denticulatum — Robson (2006); = Hypericum denticulatum Walter var. denticulatum — C, F, G, RAB, Adams (1973); > Huypericum denticulatum Walter var. ovalifolium (Britton) Blake — Tat; < Hypericum denticulatum Walter — GW2, WH3. Basionym: Hypericum denticulatum Walter 1788
Links to other floras: = Hypericum denticulatum - FNA6
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: FACW
- Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)
Heliophily ⓘ: 8
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© Bruce A. Sorrie | Original Image ⭷
© Milo Pyne, some rights reserved (CC BY-NC), uploaded by Milo Pyne source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Zach Irick, some rights reserved (CC BY-NC), uploaded by Zach Irick source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷
© Zach Irick, some rights reserved (CC BY-NC), uploaded by Zach Irick source CC-BY-NC, permission granted to NCBG | Original Image ⭷Feedback
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Horticultural Information
Intro: Shrubby, erect-ascending perennial of savannas, wet pine flatwoods and adjacent ditches, borrow scrapes and blackwater stream shores.
Stems: Stems often in clumps, sending up new sprouts from basal offshoots; slender; 4-angled; smooth and with glandular dots.
Leaves: Leaves opposite, sessile, ascending, linear to oblong-oval with rounded base, to about 2 in. long, usually 1-veined, thick and firm, with translucent glandular dots on both surfaces.
Inforescence:
Flowers: Flowers in an open to dense terminal cluster with narrowly lance-shaped bracts at the base; coppery-yellow; to 1/2 in. wide; consisting of 5 oblong-oval petals, 5 oval to lance-shaped sepals (slightly shorter than the petals), and an erect bushy cluster of stamens and a pistil at the center.
Fruits: Fruit a 1-celled, oval capsule.
Comments:
Height: 8-24 in.
plant sale text:
bloom table text:
description: Shrubby, erect-ascending perennial of savannas, wet pine flatwoods and adjacent ditches, borrow scrapes and blackwater stream shores.
stems: Stems often in clumps, sending up new sprouts from basal offshoots; slender; 4-angled; smooth and with glandular dots.
leaves: Leaves opposite, sessile, ascending, linear to oblong-oval with rounded base, to about 2 in. long, usually 1-veined, thick and firm, with translucent glandular dots on both surfaces.
inflorescence:
flowers: Flowers in an open to dense terminal cluster with narrowly lance-shaped bracts at the base; coppery-yellow; to 1/2 in. wide; consisting of 5 oblong-oval petals, 5 oval to lance-shaped sepals (slightly shorter than the petals), and an erect bushy cluster of stamens and a pistil at the center.
fruits: Fruit a 1-celled, oval capsule.
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cultural notes:
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