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Styphnolobium affine (Torr. & Gray) Walp.
Eve’s necklace, Eve's necklacepod, Texas sophora
Synonyms: Sophora affinis
USDA Symbol: STAF4
USDA Native Status: Native to U.S.
Eves necklace, a 15-30 ft., spineless shrub or tree, bears light-green, graceful leaflets and fragrant, pink, wisteria-like blooms. A tall shrub or small tree with thin, scaly, reddish brown bark on older wood and with smooth twigs. On limestone slopes, in valley bottoms, and on soils underlain with limestone in upland situations. Seeds reputed to be poisonous. Leaves divided into 6 to 8 pairs of leaflets and a terminal one on an axis up to 9 inches long, leaflets elliptic to oval, averaging an inch long, with a rounded, indented, or pointed tip, smooth margins, and a rounded or tapered base. Flowers fragrant, white tinged with rose, 1/2 inch long, arranged along axes up to 6 inches long, appearing in March and April. Fruit a long, rounded pod, constricted between the seeds, often with only 1 or a few seeds, the swollen part of the pod black, and the constrictions covered with gray hairs.
Sophora is from the Arabic name of a tree with pea-shaped flowers.
Bloom InformationBloom Color: White , Pink
Bloom Time: Mar , Apr , May
AR , LA , OK , TX Native Distribution:
OK, AR, LA & n.c. & c. TX Native Habitat:
Roadsides, Prairie, Plains, Meadows, Pastures, Savannahs, Open woodlands USDA Native Status: L48(N)
Growing ConditionsWater Use:
Low Light Requirement:
Part Shade Soil Moisture:
Dry Soil Description:
Well-drained soils. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Limestone-based. Conditions Comments:
Eves necklace is so named because this tree
blooms clustered pink flowers that mature into black, bead-like strings of seeds. The planting site must be well-drained or it will get chlorotic. It grows from seed to 6 ft. in 3 years. This plant is most attractive when grown alone, as it becomes spindly in competition from larger plants. The flowers and seeds ar poisonous.
Aromatic, Attractive, Blooms ornamental, Fruits ornamental, Accent shrub,
Showy, Accent tree
or shrub Use Wildlife:
Flowers attact bees. Nesting site, Cover, Browse, Nectar-insects Conspicuous Flowers:
Sow scarified seed after the soil has warmed. Seed Collection:
Collect seeds when the pod
begins to dry and the seeds turn red. Separate seeds from pod
and store in bags or containers in a cool dry place. Soaking the hard pods in warm water will soften them and make seed removal easier. Seed Treatment:
Seeds must be filed or mechanically scarified with a knife. Commercially Avail:
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Hill Country Natives
- Leander, TX
Herbarium Specimen(s)NPSOT 1052
Collected Apr 3, 1994 in Bexar County by Lottie Millsaps
Wildflower Center Seed BankLBJWC-MM-703
Collected 2009-10-16 in Hays County by Lady Bird Johnson Wildflower Center
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Record Modified: 2011-06-22
Research By: LBJWFC