Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Fabales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Robinia hartwigii
FAMILY
Fabaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Granite Dome Locust from the Vascular Plants of North Carolina.
Extrafloral nectaries, nectar-producing glands physically apart from the flower, occur in 2000+ plant species, including Robinia. Read more at UF/IFAS Extension.
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
PLANTS NATIONAL DATABASE:
Robinia viscosa var. hartwegii
FAMILY
Fabaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Robinia viscosa var. hartwigii
INCLUDED WITHIN Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Robinia viscosa
SYNONYMOUS WITH Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984)
Robinia viscosa var. hartwigii
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 098-32-003:
Robinia hartwigii FAMILY Fabaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Robinia hartwigii
COMMON NAME:
Granite Dome Locust, Highlands Locust, Hartwig's Locust
To see larger pictures, click or hover over the thumbnails.
)
Ron Lance rwl_viscosa_hartwegii_3
May
Racemes with short-stalked glandular trichomes; petals roseate or whitish, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
COMPARE
flowers of pink-flowering Locust species
)
Ron Lance rwl_viscosa_var_hartwegii
May
)
JK Marlow jkm140607_523
June Jackson County NC
Whiteside Mountain
Leaflets usually 13-21, plants never with long, hispid pubescence, per Weakley's Flora (2015).
COMPARE
leaves of Locust species
)
JK Marlow jkm140607_526
June Jackson County NC
Whiteside Mountain
Var. hartwigii is locally abundant on Whiteside mountain in North Carolina, per Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984).
)
JK Marlow jkm230609_4029
June Jackson County NC
Whiteside Mountain
)
JK Marlow jkm230609_4031
June Jackson County NC
Whiteside Mountain
)
JK Marlow jkm230609_4043
June Jackson County NC
Whiteside Mountain
)
JK Marlow jkm230609_4051
June Jackson County NC
Whiteside Mountain
)
JK Marlow jkm140704_575
July Jackson County NC
Whiteside Mountain
Branches and branchlets bearing viscid glands elevated on short trichomes, per Revision of the genus Robinia (Leguminosae: Papilionoideae) (Peabody, 1984).
)
JK Marlow jkm150814_734
August Jackson County NC
Whiteside Mountain
Var. hartwigii is shrubby in habit and sets abundant fruit up to 12cm long, per Revision of the genus Robinia (Leguminosae: Papilionoideae) (Peabody, 1984).
)
JK Marlow jkm150814_734b
August Jackson County NC
Whiteside Mountain
Var. hartwigii is a little known, prolifically fruiting form of R. viscosa, per Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984).
)
JK Marlow jkm150814_739
August Jackson County NC
Whiteside Mountain
Short glandular pubescence [vs. var. viscosa's sessile or bump-like glands], per Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984).
)
JK Marlow jkm180821_4048
August Jackson County NC
Whiteside Mountain
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Robinia hartwigii
FAMILY
Fabaceae
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
PLANTS NATIONAL DATABASE:
Robinia viscosa var. hartwegii
FAMILY
Fabaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Robinia viscosa var. hartwigii
INCLUDED WITHIN
Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Robinia viscosa
SYNONYMOUS WITH
Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984)
Robinia viscosa var. hartwigii
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 098-32-003:
Robinia hartwigii
FAMILY
Fabaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Robinia hartwigii
2188
Shrub
Perennial
Habitat: forests and outcrop edges on high elevation granitic domes, also clearings; disjunct in longleaf pine sandhills, per Weakley's Flora
Native to the Carolinas
Rare (endemic to near Highlands, NC, and apparently disjunct in SC Sandhills)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
IS THE PLANT "ARMED"?
Stems of juvenile plants usually armed with paired stipular or nodal spines
LEAVES:
Deciduous
Odd-pinnately compound: 13-21 leaflets (usually)
Mostly alternate
FLOWER:
Summer
Pale pink/ Whitish
Bilaterally symmetrical
2-lipped campanulate calyx
5-parted papilionaceous corolla
Superior ovary
FRUIT:
Summer/Fall
Legume
TO LEARN MORE about this plant, look it up in a good book!
- How to Recognize Shrubs (Grimm, 1966) p155
- Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004) p300
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
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