Styphnolobium affine |
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Eve's necklace, Eve's necklacepod |
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Habit | Trees or shrubs, to 10 m. |
Leaves | stipules linear, 2 mm; petiole 1.8–2.5 cm, sparsely to moderately pubescent, hairs antrorse-appressed, translucent to white; leaflets (9–)13–19, petiolules 1–2 mm, blades narrow to broadly elliptic or obovate, (0.6–)1–3.7(–4.5) × (0.3–)0.6–1.7(–2) cm, apex obtuse to rounded, mucronate, surfaces evenly sparsely to densely pubescent abaxially, glabrous or glabrate adaxially. |
Inflorescences | axillary, racemes, axis moderately to densely pubescent, hairs antrorse-appressed, translucent to white; axis (2–)7–10 cm; bracts linear, 0.5–1.2 mm; bracteoles linear, 0.5–2 mm. |
Pedicels | 5–20 mm, densely pubescent, hairs antrorse-appressed, translucent to white. |
Flowers | calyx 2.5–5 mm, moderately to densely pubescent, lobes broadly rounded; corolla white to yellow, pink, or purple, 1–1.4 cm; ovary densely sericeous. |
Legumes | 3–5(–15) × 0.8–1 cm; stipe 10–20 mm. |
Seeds | 1–4(–8), 5.2–7 × 4–5 mm. |
2n | = 28. |
Styphnolobium affine |
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Phenology | Flowering Mar–May. |
Habitat | Woodlands, floodplains, stream margins, rocky uplands, roadsides. |
Elevation | 0–600 m. (0–2000 ft.) |
Distribution |
AR; LA; OK; TX
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Discussion | The flowers of Styphnolobium affine are showy, and the persistent fruit resembles a black string of pearls. It is cultivated as an ornamental within its native range. The seeds are reputed to be poisonous. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Styphnolobium |
Sibling taxa | |
Synonyms | Sophora affinis |
Name authority | (Torrey & A. Gray) Walpers: Repert. Bot. Syst. 1: 807. (1843) |
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