Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Hypericum graveolens
FAMILY
Hypericaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Mountain St. Johnswort at Vascular Plants of North Carolina.
This and the related H. mitchellianum (another narrow endemic to the Southern Appalachians) hybridize, forming local hybrid populations with intermediate characteristics (Culwell 1970), per Weakley's Flora (2022).
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Hypericum graveolens
FAMILY
Clusiaceae
SYNONYMOUS WITH Flora of North America
Hypericum graveolens
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 126-01-030:
Hypericum graveolens FAMILY Hypericaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Hypericum graveolens
COMMON NAME:
Mountain St. Johnswort
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hygr3_001_lvd
)
JK Marlow jkm0407w_14
July Mitchell County NC
The Roan Highlands
)
JK Marlow jkm070721_020
July Carter County TN
The Roan Highlands
A narrow Southern Appalachian endemic, per Weakley's Flora.
)
JK Marlow jkm070721_022
July Carter County TN
The Roan Highlands
Sepals & petals without black lines, round black glands only along petal margins, per Weakley's Flora.
)
JK Marlow jkm070721_023
July Carter County TN
The Roan Highlands
Inflorescence few-flowered cymes at the ends of branches, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
)
JK Marlow jkm240711_0301
July Jackson County NC
Blue Ridge Parkway
)
JK Marlow jkm0508d_03
August Transylvania County NC
Blue Ridge Parkway
)
JK Marlow jkm190914_1531
September Swain County NC
Great Smoky Mountains National Park
Styles usually 5.6-10mm long (vs. H. mitchellianum usually 1.9-2.9mm long), per Weakley's Flora.
)
JK Marlow jkm190914_1533
September Swain County NC
Great Smoky Mountains National Park
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Hypericum graveolens
FAMILY
Hypericaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Hypericum graveolens
FAMILY
Clusiaceae
SYNONYMOUS WITH
Flora of North America
Hypericum graveolens
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 126-01-030:
Hypericum graveolens
FAMILY
Hypericaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Hypericum graveolens
1867
Forb
Perennial
Habitat: Grassy balds, grassy openings, forests, at high elevations (1200 m or more), per Weakley's Flora
Native to North Carolina
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Herbaceous, with broad leaves, 3(4) locular capsules, stamens connate at base into 3 or 5 fascicles, leaves with black dots as well as translucent glands, and sepals and/or petals marked with black dots or lines
Opposite
FLOWER:
Summer
Yellow
Radially symmetrical
5 persistent sepals
5 petals
Superior ovary
Bisexual
FRUIT:
Summer
Capsule
TO LEARN MORE about this plant, look it up in a good book!
- Great Smoky Mountains Wildflowers (Campbell, Hutson, Sharp, & Hutson, 1962) p122
- Wildflowers of Tennessee (Carman, 2005) p065
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p088
- Wildflowers of the Southern Mountains (Smith, 1998) p097
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
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