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Hypericum crux-andreae (Linnaeus) Crantz. Section: Myriandra. Common name: St. Andrew's Cross, St. Peter's-wort. Phenology: Jun-Oct. Habitat: Pine flatwoods, pine savannas, bogs, seeps, mesic to dryish forests and woodlands. Distribution: NY (Long Island) and NJ south to s. FL, west to e. TX, primarily on the Coastal Plain, but scattered inland to w. NC and n. GA, also north in the interior to c. TN, s. KY, c. AR, and se. OK.

Origin/Endemic status: Endemic

Synonymy ⓘ: = Ar, Fl2, FNA6, GW2, K4, NcTx, NS, Pa, POWO, Tn, W, WH3, Godfrey (1988), Robson (1996); = Ascyrum stans Michx. ex Willd. — F, G, Tat, Tx; = Hypericum stans (Michx. ex Willd.) W.P.Adams & Robson — C, RAB, Adams (1962), Adams (1973); > Ascyrum cuneifolium Chapm. — S, S13; > Ascyrum stans Michx. ex Willd. — S, S13; Ascyrum crux-andreae Linnaeus. Basionym: Ascyrum crux-andreae L. 1753

Links to other floras: = Hypericum crux-andreae - FNA6

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FACU
  • Great Plains: FAC
  • Northcentral & Northeast: FACU

Heliophily ⓘ: 7

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image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Alan Cressler: hypericum crux-andreae, sansavilla wildlife management area, glynn county, georgia 1 by Alan Cressler source | Original Image ⭷

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Horticultural Information

NCBG trait

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Height: 1-3 ft.

plant sale text: Hypericum crux-andreae is a small, upright, narrow (1-3 ft spread), semi-evergreen shrub native to the Southeastern US in moist sandy woods, pinelands, stream banks, wet prairies and pond margins, as well as occasionally on drier upland sites. Beginning in the summer this species produces lemony yellow flowers comprised of four petals instead of the typical five for the genus. In addition to its extended floral display, lasting into the fall, St. Peter's-wort displays attractive shedding bark on older wood. The Hypericum genus supports up to 20 lepidoptera species.

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cultural notes:

germination code: 2

native range: eastern United States



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