North Carolina Botanical Garden

Plant Index

Scientific Name:
Common Name:
Genus:
Family:

Hypericum crux-andreae

Hypericum crux-andreae (L.) Crantz

st. peter’s-wort, st. andrew’s cross, st. peterswort

Synonym(s): Ascyrum crux-andreae, Ascyrum cuneifolium, Ascyrum stans, Hypericum stans

Hypericum crux-andreae (St. Peter’s-wort)

Image ID: 24690
Image by: Stuart, Will
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: HYCR3
SCIENTIFIC NAME: Hypericum crux-andreae
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-11-25

GENUS INDEX

GENUS CODE: HYPER
GENUS SCIENTIFIC: Hypericum
GENUS AUTHORITY: L.
GENUS COMMON: St. Johnswort
GENUS SUMMARY: A genus of 370-420 species, trees, shrubs, and herbs, primarily temperate. Hypericum in our area is a large, complex, and interesting genus, with a number of unresolved questions remaining. Following N�rk et al. (2013), it seems best to circumscribe Hypericum to include Triadenum (in Key A) and Thornea (the latter not relevant to our area), but not Vismia and Harungana. The species treated in Key C have often been treated in the segregate genus Ascyrum; evidence from a variety of disciplines now suggests that they should be included in Hypericum (Adams & Robson 1961; Calie, Schilling, & Webb 1983; Robson 1996; N�rk et al. 2013). Triadenum, while almost basal in Hypericum, should also be included (N�rk et al. 2013).
GENUS IDENTIFICATION: Identification notes: �Longest leaves� should be sought at branch nodes.
GENUS REFERENCES: Sorrie (2012)=U; Adams (1973)=Z; Godfrey (1988)=Y; Robson (1977, 1981, 1990, 1996, 2001, 2002, 2006)=X; Adams (1962)=V; Allison (2011)=Q; Adams (1957); Webb (1980); Robson & Adams (1968); Adams & Robson (1961); Calie, Schilling, & Webb (1983); Culwell (1970); N�rk et al. (2013); Cooperrider (1989); Stevens in Kubitzki, Bayer, & Stevens (2007). Key based in part on Adams (1973), Godfrey (1988), C, and GW. {add for FL: Hypericum cumulicola, Hypericum edisonianum, and also add �not yet keyed� Hypericum dolabriforme and Hypericum erythreae}

FAMILY INDEX

FAMILY CODE: HYPERIC
FAMILY SCIENTIFIC: Hypericaceae
FAMILY AUTHORITY: A.L. de Jussieu 1789
FAMILY COMMON: St. John's-wort Family
FAMILY SUMMARY: A family of 7-9 genera and 480-560 species, herbs, shrubs, and trees, nearly cosmopolitan. It appears from molecular analysis that recognition of the Hypericaceae is (after all) warranted. Hypericum is in a clade with Podostemum and Bonnetia, sister to a clade including Clusiaceae s.s. (Savolainen et al. 2000), and unless the morphologically very different Podostemaceae is to be included in a broad Clusiaceae, Hypericaceae and Podostemaceae must be recognized.
FAMILY REFERENCE: Adams (1973)=Z; Godfrey (1988)=Y; Wood & Adams (1976); Stevens in Kubitzki, Bayer, & Stevens (2007).

NCBG DESCRIPTIVES

INTRO:
STEMS:
LEAVES:
INFLORESCENCE:
FLOWERS:
FRUITS:
COMMENTS:
HEIGHT: 1-3 ft.

DURATION: Perennial
HABIT: Subshrub, Shrub

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: June-Oct

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
				x	x	x	x	x	x	x

BLOOM COLOR: Light yellow flowers

White	Red	Pink	Orange	Yellow	Green	Blue	Lavender	Purple	Violet	Brown	Not Applicable
				x

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Dry forests, Moist forests, Pine savannas
NATIVE RANGE: eastern United States

HORTICULTURAL
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.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average, Moist/Wet
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE: 5
MAXIMUM HARDINESS ZONE: 8
GERMINATION CODE:
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id	acc_num	acc_dt	coll_id	Action
120	2012-0094	2012-11-13	121	View
1945	1986-1732			View
2191	1986-2003			View
4613	1992-0769			View
9442	2021-0101	2021-07-01	0	View

GRIM COLLECTIONS

Coll_id	Project	Collection date	Collector	Action
121	HORT	2010-10-22	Poythress	View

GRIM PLANTINGS

plt_num	acc_id	loc_num	pers_num	inst_dt	Action
220	120	15	Liloia	2012-10-01	View
221	120	14	Summer	2013-04-25	View
3098	1945	63	NCBG staff	1986-12-22	View
3099	1945	64	NCBG staff	1986-12-22	View
3785	2191	58	NCBG staff	1986-12-23	View
6942	4613	200	NCBG staff	1993-03-01	View
12719	0	12	Liloia	0000-00-00	View
12778	9442	14	Liloia	0000-00-00	View

USDA PLANTS DATABASE

USDA Symbol: HYCR3
USDA Common Name: St. Peterswort
Native Status: L48 (N)
Distribution: USA (AL, AR, DC, DE, FL, GA, KY, LA, MD, MS, NC, NJ, NY, OK, PA, SC, TN, TX, VA)
Duration: Perennial
Growth Habit: Subshrub, Shrub

NATIONAL WETLAND INDICATOR STATUS

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FACW				FACU	FAC			FACU

This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast

WEAKLEY FLORA

SCIENTIFIC NAME: Hypericum crux-andreae
COMMON NAME: St. Andrew's Cross, St. Peter's-wort
SYNONYMY: [= GW, K, Pa, W, WH3, X, Y; = H. stans (Michaux ex Willdenow) W.P. Adams & Robson - C, RAB, V, Z; = Ascyrum stans Michaux ex Willdenow - F, G; > Ascyrum stans - S; > Ascyrum cuneifolium Chapman - S]
PHENOLOGY: Jun-Oct.
HABITAT: Pine flatwoods, pine savannas, bogs, seeps, mesc to dryish forests and woodlands.
COMMENTS: 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.
RANGE MAP: Hypericum crux-andreae.png

Key to Map Symbols

ABOUT FAMILY (Weakley Flora)
Hypericaceae A.L. de Jussieu 1789 (St. John's-wort Family)
SUMMARY: A family of 7-9 genera and 480-560 species, herbs, shrubs, and trees, nearly cosmopolitan. It appears from molecular analysis that recognition of the Hypericaceae is (after all) warranted. Hypericum is in a clade with Podostemum and Bonnetia, sister to a clade including Clusiaceae s.s. (Savolainen et al. 2000), and unless the morphologically very different Podostemaceae is to be included in a broad Clusiaceae, Hypericaceae and Podostemaceae must be recognized.
REFERENCE: Adams (1973)=Z; Godfrey (1988)=Y; Wood & Adams (1976); Stevens in Kubitzki, Bayer, & Stevens (2007).

ABOUT GENUS (Weakley Flora)
Hypericum L. (St. Johnswort)
SUMMARY: A genus of 370-420 species, trees, shrubs, and herbs, primarily temperate. Hypericum in our area is a large, complex, and interesting genus, with a number of unresolved questions remaining. Following N�rk et al. (2013), it seems best to circumscribe Hypericum to include Triadenum (in Key A) and Thornea (the latter not relevant to our area), but not Vismia and Harungana. The species treated in Key C have often been treated in the segregate genus Ascyrum; evidence from a variety of disciplines now suggests that they should be included in Hypericum (Adams & Robson 1961; Calie, Schilling, & Webb 1983; Robson 1996; N�rk et al. 2013). Triadenum, while almost basal in Hypericum, should also be included (N�rk et al. 2013).
REFERENCE: Sorrie (2012)=U; Adams (1973)=Z; Godfrey (1988)=Y; Robson (1977, 1981, 1990, 1996, 2001, 2002, 2006)=X; Adams (1962)=V; Allison (2011)=Q; Adams (1957); Webb (1980); Robson & Adams (1968); Adams & Robson (1961); Calie, Schilling, & Webb (1983); Culwell (1970); N�rk et al. (2013); Cooperrider (1989); Stevens in Kubitzki, Bayer, & Stevens (2007). Key based in part on Adams (1973), Godfrey (1988), C, and GW. {add for FL: Hypericum cumulicola, Hypericum edisonianum, and also add �not yet keyed� Hypericum dolabriforme and Hypericum erythreae}

HERBARIUM RESOURCES

SERNEC: Find Hypericum crux-andreae in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Hypericum crux-andreae in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Hypericum crux-andreae in USDA Plants
NPIN: Find Hypericum crux-andreae in NPIN Database
FNA: Find Hypericum crux-andreae in the Flora of North America (if available)
Google: Search Google for Hypericum crux-andreae

IMAGE USE RECORDS

ID IMAGE: 24690 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 24690 - Primary Image WOTAS
ID IMAGE2: 18119 - Secondary Image WOTAS
ID IMAGE3: 24690 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)