Difference between revisions of "Stillingia spinulosa"
Not. Milit. Reconn., 151. 1848.
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|genus=Stillingia | |genus=Stillingia | ||
|species=Stillingia spinulosa | |species=Stillingia spinulosa | ||
Revision as of 21:12, 27 May 2020
Herbs, annual or perennial, with taproot. Stems fascicled, decumbent to erect, branching distally, 0.5–3 dm. Leaves opposite or subopposite; stipules absent; petiole absent; blade elliptic to elliptic-spatulate, 1.5–4(–4.5) × 0.5–1.4(–1.8) cm, base narrowly cuneate, margins prominently spinulose-dentate, teeth without prominent blackened tips, not incurved, apex acuminate; midvein and secondary veins prominent. Inflorescences sessile, 1–1.2(–2) cm; staminate flowers crowded, 1 per node; pistillate flowers 1–3, crowded; bracts linear-lanceolate, to 2 mm, apex acute, glands patelliform, long-stalked, 1.5–-2 mm diam. Staminate flowers: calyx to 1 mm. Pistillate flowers: sepals 0; styles connate only at base, to 3 mm. Capsules ovoid, 3.5 × 4–4.5 mm, deeply 3-lobed; lobes of gynobase 2 mm; columella sometimes persistent. Seeds mottled light gray, cylindric-ovoid, 3.5 × 1.8 mm, smooth; caruncle absent.
Phenology: Flowering Dec–Mar(–Apr); fruiting Mar–Jun.
Habitat: Dry sandy desert soils.
Elevation: 0–1000 m.
Distribution
Ariz., Calif., Nev., Mexico (Baja California, Sonora).
Discussion
Selected References
None.