Clicking on particular species will lead you to more information or photographs:
A camera indicates there are pictures. 
A speaker indicates there is a sound file demonstrating pronunciation
of the botanical name. 
A plus sign after a Latin name indicates that the species is further divided into varieties or subspecies. 
Your search found 35 taxa.
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Ascyrum pumilum
)
Common Name:
St. Andrew's Cross
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Ascyrum hypericoides
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Ascyrum linifolium
Four yellow petals narrowly oblong-linear to oblong-elliptic, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Common Name:
Creeping St. Andrew's Cross, Low St. Johnswort, Straggling St. Johnswort
SYNONYMOUS WITH
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ascyrum hypericoides var. multicaule
Two outer sepals, ovate or widely elliptic; inner sepals usually obsolete, per Vascular Flora of the Carolinas.
)
Common Name:
St. Peter's-wort, St. Andrew's Cross, St. Peter's Cross
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Ascyrum stans
Four unequal sepals: the 2 outer and larger enclosing 2 much narrower inner, per Wildflowers of the Carolina Lowcountry.
)
Common Name:
Virginia Marsh St. Johnswort, Common Marsh St. Johnswort
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Triadenum virginicum
Flowers have 5 sepals, 5 pink petals, 9 stamens, and 3 stigmas on 3 styles, per Vascular Flora of the Carolinas.
SYNONYMOUS WITH
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triadenum tubulosum
SYNONYMOUS WITH
Gray's Manual of Botany (Fernald, 1950)
Hypericum tubulosum var. tubulosum
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Triadenum longifolium
)
Common Name:
Walter’s Marsh St. Johnswort, Greater Marsh St. Johnswort
SYNONYMOUS WITH
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triadenum walteri
SYNONYMOUS WITH
Gray's Manual of Botany (Fernald, 1950)
Hypericum tubulosum var. walteri
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Triadenum petiolatum
Petals pale pink. Sepals 3-5 mm long, obtuse, per Weakley's Flora.
)
Common Name:
Shrubby St. Johnswort
Five petals, the corolla 2-2.5cm broad; stamens numerous, per Native Shrubs and Woody Vines of the Southeast.
)
Common Name:
Mountain Bushy St. Johnswort, Dense-flowered St. Johnswort
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Hypericum densiflorum
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Hypericum glomeratum
Golden-yellow flowers about 1/2" wide, in a very dense flower cluster, per Newcomb's Wildflower Guide.
)
Common Name:
Interior Bushy St. Johnswort
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Hypericum interior
Flowers 7-many per inflorescence, in terminal cymes, per Weakley's Flora.
)
Common Name:
bedstraw St. Johnswort
Flowers 13-15mm in diameter in elongate inflorescences of 3-7 nodes, per Weakley's Flora.
Common Name:
Sandhill St. Johnswort, Atlantic St. Johnswort
Common Name:
Lloyd's St. Johnswort, Sandhills St. Johnswort, Piedmont St. Johnswort
Common Name:
Peelbark St. Johnswort
)
Common Name:
Granite Dome St. Johnswort, Mountain St. Johnswort, Buckley's St. Johnswort, Dwarf St. Johnswort
Flowers solitary or in small, flat-topped inflorescences, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
)
Common Name:
Early St. Johnswort, Naked St. Johnswort, Streamside St. Johnswort
Petals yellow and 6-8mm long. Go canoeing to see this plant at its best, per Wildflowers of the Sandhills Region.
Common Name:
early St. Johnswort
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Hypericum apocynifolium
)
Common Name:
Roundpod St. Johnswort
Flowers with 5 quarter-inch petals, borne in a showy cymose inflorescence, per Atlantic Coastal Plain Wildflowers.
)
Common Name:
Pineweed, Orange-grass
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Sarothra gentianoides
Flowers yellow, terminal, 0.25" wide, with "propeller-twisted" petals. — Patrick McMillan
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Sarothra drummondii
)
Common Name:
Hairy St. Johnswort
Small, yellow, 5-petaled flowers in a branchng inflorescence near stem top, per Atlantic Coastal Plain Wildflowers.
)
Common Name:
Canada St. Johnswort
Flowers borne in small groups, in a more-or-less flat-topped inflorescence, per Wildflowers of the Sandhills Region.
)
Common Name:
Common Dwarf St. Johnswort
Five yellow to yellow-orange petals, pistil with 3 styles, 5-15 stamens, per www.illinoiswildflowers.info.
Common Name:
Coppery St. Johnswort
)
Common Name:
Strict St. Johnswort, Sharpleaf St. Johnswort
INCLUDING
Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Hypericum denticulatum var. recognitum
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933)
Hypericum acutifolium
Sepals and petals not marked with black dots or lines, per Weakley's Flora.
)
Common Name:
European St. Johnswort, Common St. Johnswort
Flowers 3/4"-1" wide, with black "stitching" on the margins of petals, per Wildflowers of the Southern Mountains.
)
Common Name:
Spotted St. Johnswort
Flowers spotted or streaked with black on the undersides, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Common Name:
Blue Ridge St. Johnswort
Petals have black lines and round black glands scattered over the surface, per Weakley's Flora.
)
Common Name:
Mountain St. Johnswort
Sepals &petals without black lines, round black glands only along petal margin, per Weakley's Flora.
)
Common Name:
Glade St. Johnswort
Sepals very unequal. Petals more than 0.35" long. Stamens 120-200, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Common Name:
Golden St. Johnswort
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Hypericum aureum
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Hypericum splendens
1-3 showy flowers with broad green bracts at the ends of branches, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Common Name:
Barrens St. Johnswort
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Hypericum turgidum
INCLUDING
Hypericum sphaerocarpum var. turgidum
Numerous flowers in an often compact, much-branched inflorescence, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Common Name:
Low St. Peter's-wort
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Ascyrum tetrapetalum
Flowers w 4 petals & 4 (rarely2) sepals. Leaves cordate-clasping at the base, per Weakley's Flora.
)
Common Name:
Aaron's Beard
Single 3" yellow flowers in spring and summer, per NC State University Cooperative Extension.
Your search found 35 taxa. You are on page PAGE 1 out of 1 pages.