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Hypericum denticulatum Walter. Strict St. John's-wort. Phen: Jul-Sep. Hab: Wet pine savannas, wet pine flatwoods, adjacent ditches, borrow scrapes, blackwater stream shores. Dist: 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.

Origin/Endemic status: Endemic

Taxonomy Comments: See discussion under H. virgatum.

Synonymy ⓘ: = FNA6, K1, K3, K4, NY, Pa, 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

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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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Milo Pyne, some rights reserved (CC BY-NC), uploaded by Milo Pyne source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Zach Irick, some rights reserved (CC BY-NC), uploaded by Zach Irick source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Zach Irick, some rights reserved (CC BY-NC), uploaded by Zach Irick source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

NCBG trait

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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germination code:

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