North Carolina Botanical Garden

Plant Index

Scientific Name:
Common Name:
Genus:
Family:

Hypericum frondosum

Hypericum frondosum Michx.

cedar-glade st. john's-wort

Synonym(s): Hypericum aureum, Hypericum splendens

Image ID: 94483
Image by: Fleming, Gary P.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: HYFR
SCIENTIFIC NAME: Hypericum frondosum
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-01-29

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: 4 ft.

DURATION: Perennial
HABIT: Subshrub, Shrub

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
LEAF RETENTION: Deciduous

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: May-Aug

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

BLOOM COLOR: Yellow flowers

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

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Outcrops and glades
NATIVE RANGE: southeastern United States

HORTICULTURAL
Plant Sale Text: This is a Southeastern native shrub that adds lively color to the summer garden. Blooming for many weeks in midsummer, its profuse small yellow flowers contrast beautifully with the glossy, blue-green foliage. This adaptable native shrub may be seen growing on bluffs and rocky banks. This is a good plant for pollinators during the summer. Although it is easily grown, cedar glade St. John’s-wort is relatively uncommon. The Hypericum genus supports up to 20 species of lepidoptera.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
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
4758	1993-0036			View
6675	1996-0326			View
8190	2004-0206	2006-05-19		View

GRIM COLLECTIONS

Coll_id	Project	Collection date	Collector	Action
1311	HORT	2006-11-06	Bryan	View

GRIM PLANTINGS

plt_num	acc_id	loc_num	pers_num	inst_dt	Action
7104	4758	79	NCBG staff	1993-10-01	View
9435	6675	140	NCBG staff	2004-01-01	View
9436	6675	118	NCBG staff	1967-12-31	View
11453	8190	83	NCBG staff	2004-01-01	View

USDA PLANTS DATABASE

USDA Symbol: HYFR
USDA Common Name: Cedarglade St. Johnswort
Native Status: L48 (N)
Distribution: USA (AL, CT, FL, GA, IN, KY, LA, MA, MS, NC, NY, SC, TN, TX, VA)
Duration: Perennial
Growth Habit: Subshrub, Shrub

WEAKLEY FLORA

SCIENTIFIC NAME: Hypericum frondosum
COMMON NAME:
SYNONYMY: [= C, F, G, K, V, Va, W, WH3, Y, Z; > H. aureum Bartram - S; > H. splendens Small - S]
PHENOLOGY: Late May-Aug.
HABITAT: Rock outcrops and rocky woodlands; also in dry disturbed areas.
COMMENTS: This species is native and widespread as far east as e. TN (Chester, Wofford, & Kral 1997), GA, and FL.
RANGE MAP: Hypericum frondosum.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 frondosum in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Hypericum frondosum in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

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

IMAGE USE RECORDS

ID IMAGE: 94483 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 0 - Primary Image WOTAS
ID IMAGE2: 0 - Secondary Image WOTAS
ID IMAGE3: 53312 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)