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Taxon
Robinia pseudoacacia
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Common name:
Black Locust, Yellow Locust, False Acacia
Family:
Fabaceae (Bean)
Synonym:
Robinia pseudo-acacia
Distribution:
E. US
Habitat:
Woodlands, prairies, pastures, disturbed habitats; 0-800 meters
Hardiness:
-40 - -30 F
Life form:
Deciduous tree
Bloom Time:
May to June
Attracts:
Bees; butterflies; birds
Fall color:
Yellowish
Foliage characteristics:
Alternate, pinnately compound leaves with 7-19 lanceolate leaflets. Leaves 8-12" long, leaflets 1-2" long.
Fruit characteristics:
Flat, dark legume with an impermeable coat contain 4-8 seeds. 3-4" long.
Bark characteristics:
Young: smooth, brown, and thorny Mature: thick, deeply furrowed, scaly, and dark brown
Average height:
30-60'
Structure:
Broadly columnar
Bloom characteristics:
Drooping clusters of white, pea-like, fragrant flowers grow from leaf axils near the tip of new shoots. 6" long.
Dioecious:
Yes.
Description:
Black locust is notable for its hanging clusters of white, pea-like flowers. This plant has spines, and the bark and young branches are poisonous - especially to horses.
Invasive but not banned in Connecticut, Prohibited in Massachusetts, a California invasive plant, and on the Weeds of the Northeast list.
Links:
Fire Effects Information System (FEIS)
•
Missouri Botanical Garden Plant Finder
•
USDA Natural Resources Conservation Service
Locations
1:
Cultural Resource Center
(CRC)
• Accession: 2011-2810*A • Provenance: From a cultivated plant not of known wild origin
2:
Cultural Resource Center
(CRC)
• Accession: 2011-2904*A • Provenance: From a cultivated plant not of known wild origin
3:
Cultural Resource Center
(CRC)
• Accession: 2011-2908*A • Provenance: From a cultivated plant not of known wild origin
4:
Cultural Resource Center
(CRC)
• Accession: 2011-2911*A • Provenance: From a cultivated plant not of known wild origin
5:
Cultural Resource Center
(CRC)
• Accession: 2011-2920*A • Provenance: From a cultivated plant not of known wild origin
6:
Cultural Resource Center
(CRC)
• Accession: 2011-2944*A • Provenance: From a cultivated plant not of known wild origin
7:
Cultural Resource Center
(CRC)
• Accession: 2011-2946*A • Provenance: From a cultivated plant not of known wild origin
8:
Cultural Resource Center
(CRC)
• Accession: 2011-3020*A • Provenance: From a cultivated plant not of known wild origin
9:
Cultural Resource Center
(CRC)
• Accession: 2011-3026*A • Provenance: From a cultivated plant not of known wild origin
10:
Cultural Resource Center
(CRC)
• Accession: 2011-3027*A • Provenance: From a cultivated plant not of known wild origin
11:
Cultural Resource Center
(CRC)
• Accession: 2011-3030*A • Provenance: From a cultivated plant not of known wild origin
12:
Cultural Resource Center
(CRC)
• Accession: 2019-0308*A • Provenance: Collected directly from the wild; origin known
Area
Individual