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Published In: Botanical Magazine 63: pl. 3516. 1836. (Bot. Mag.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 7/24/2009)

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22. Streptanthus hyacinthoides W. J. Hooker, Bot. Mag. t. 3516. 1836; Erysimum hyacinthoides (W. J. Hooker) Kuntze, Revis. Gen. Pl. 2:P 933. 1891; Euklisia hyacinthoides (W. J. Hooker) Small, Fl. SE U.S. 486. 1903; I. hyacinthoides (W. J. Hooker) Greene, Leafl. Bot. Observ. Crit. 1: 197. 1906. TYPE: United States, Texas, Austin Co., San Felipe, T. Drummond 12 (holotype, K!; isotypes, GH!, K!).

Icianthus atratus Greene, Leafl. Bot. Observ. Crit. 1: 198. 1906. TYPE: United States, Indian Territory, along the Canadian River, Jun 1891, M. A. Carleton s.n. (holotype, US).

Streptanthus glabrifolius Buckley, Proc. Acad. Nat. Sci. Philadelphia 1861: 448. 1861; Icianthus glabrifolius (Buckley) Greene, Leafl. Bot. Observ. Crit. 1: 197. 1906. TYPE: United States, Texas: Young Co., Sandy Post Oaks woods, 1861–1862, N of Belknap, S. B. Buckley s.n. (holotype, PH?; fragment, GH!).

     Herbs, annual, glabrous throughout except sometimes for stem base. Stems 2.8–13 dm, erect, simple or branched above. Basal leaves not seen; middle cauline leaves short petiolate or sessile, not auriculate, linear to linear-lanceolate or rarely oblanceolate, 2.5–16 x 0.2–0.7(–2) cm, entire; upper leaves similar, reduced. Racemes ebracteate, without a terminal cluster of sterile flowers; fruiting pedicels divaricate-ascending, straight, 3–10 mm. Flowers horizontal to pendent, slightly zygomorphic; sepals forming campanulate calyx, purple, lanceolate, 7–11 mm, not keeled; petals deep purple to magenta or whitish with purple veins, 1.3–2 cm; blade strongly recurved, not crisped, 7–12 x 1–4 mm; claw 5–12 mm; filaments in 3 pairs of unequal length; adaxial pair united to ca. ¾ length, 7–10 mm; abaxial pair united below middle, 8–14 mm; lateral pair 4–7 mm; anthers of adaxial stamens sterile, 1–1.5 mm; anthers of abaxial and lateral stamens fertile, 2–3 mm. Fruits 3.7–11.2 cm x 1.5–2 mm, divaricate-ascending, flattened, straight or slightly curved inwards, not torulose; valves glabrous, with a distinct midvein; gynophore 0.3–3 mm; replum straight; style 0.3–1.5 mm; stigma subentire; ovules and seeds 90–120 per fruit. Seeds broadly ovate, 1.5–1.8 x 1–1.3 mm; wing continuous, 0.1–0.25 mm.

Flowering: May–Jun.

Habitat: sandy soils of prairies, open glades in woods, grassy roadsides.

Elevation: 100–800 m.

Distribution: United States (Arkansas, Kansas, Louisiana, Oklahoma, Texas).




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