Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Liliales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Trillium underwoodii
FAMILY
Trilliaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Test-drive A Teaching Key to Trillium.
Learn more about Underwood's Trillium from the Vascular Plants of North Carolina.
The only erect trillium with the stems typically < 2× as long as the leaves (though sometimes elongating later in the season), per Weakley's Flora (2023).
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Trillium underwoodii
FAMILY
Liliaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Trillium underwoodii
SYNONYMOUS WITH Trilliums of Georgia. Tipularia (Patrick, 2007)
Trillium underwoodii
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 26 (2002)
Trillium underwoodii
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Trillium underwoodii
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Trillium underwoodii
COMMON NAME:
Underwood's Trillium
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm100313_080
March Gadsden County FL
Angus Gholson Nature Park
Petals narrowly elliptic to oblanceolate-obovate, per Weakley's Flora.
)
JK Marlow jkm100313_084
March Gadsden County FL
Angus Gholson Nature Park
Lvs w conspicuous pale silvery-green streak. Seapls usually at or above lvs, per Weakley's Flora (2020).
)
JK Marlow jkm100313_092
March Gadsden County FL
Angus Gholson Nature Park
Stamens are maroon, per Field Guide to the Rare Plants of Georgia (Chafin, 2007).
)
JK Marlow jkm100313_093
March Gadsden County FL
Angus Gholson Nature Park
Leaves much longer than broad, with a long, evenly tapered, pointed apex, per Trilliums of Georgia (Patrick, 2007).
)
JK Marlow jkm100313_155
March Gadsden County FL
Angus Gholson Nature Park
Leaves drooping, often touching the ground, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
)
JK Marlow jkm100313_160
March Gadsden County FL
Angus Gholson Nature Park
The only erect Trillium w stem less than 2x long as sessile leaves, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
)
Richard and Teresa Ware rtw_t_underwoodii_2
March
)
Richard and Teresa Ware rtw_t_underwoodii_s
March
Stamens < 0.5× long as petals; anther connectives not prolonged into a beak, per Weakley's Flora (2020).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Trillium underwoodii
FAMILY
Trilliaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Trillium underwoodii
FAMILY
Liliaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Trillium underwoodii
SYNONYMOUS WITH
Trilliums of Georgia. Tipularia (Patrick, 2007)
Trillium underwoodii
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 26
Trillium underwoodii
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Trillium underwoodii
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Trillium underwoodii
3409
Forb
Perennial
Habitat: Moist forests, per Weakley's Flora
Native to Georgia
Uncommon in GA Coastal Plain, rare in Piedmont
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
A single terminal whorl of 3 leaves
Leaves sessile
FLOWER:
Spring
Maroon/ Green/ Yellow
Purple-black to dull greenish-maroon
Flowers are sessile.
Radially symmetrical
3 sepals
3 petals
Bisexual
FRUIT:
Spring/Summer
Berry
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to the Rare Plants of Georgia (Chafin, 2007) p413
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p167
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p425
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