Stillingia spinulosa

Torrey

in W. H. Emory, Not. Milit. Reconn., 151. 1848.

Common names: Annual toothleaf broad-leaved stillingia
Treatment appears in FNA Volume 12. Treatment on page 235. Mentioned on page 234.

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.

Lower Taxa

None.
... more about "Stillingia spinulosa"
Michael J. Huft +
Torrey +
Annual toothleaf +  and broad-leaved stillingia +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California +  and Sonora). +
0–1000 m. +
Dry sandy desert soils. +
Flowering Dec–Mar(–Apr) +  and fruiting Mar–Jun. +
in W. H. Emory, Not. Milit. Reconn., +
Stillingia spinulosa +
Stillingia +
species +