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), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.

"connate" is not a number. "distinct" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Stillingia spinulosa"
acute;acuminate +
Michael J. Huft +
Torrey in W. H. Emory +
cuneate +
4 cm40 mm <br />0.04 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
elliptic;elliptic-spatulate +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
linear-lanceolate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0 cm0 mm <br />0 m <br /> (?) +  and 0.1 cm1 mm <br />0.001 m <br /> (?) +
3.5 cm35 mm <br />0.035 m <br /> (?) +
3-lobed +  and ovoid +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Annual toothleaf +  and broad-leaved stillingia +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California) +  and Mexico (Sonora) +
0–1000 m. +
pistillate +  and staminate +
long-stalked +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
subtending +
patelliform +
[2-]3-lobed +
Dry sandy desert soils. +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
leaf-opposed +, terminal +  and axillary +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
subopposite +  and opposite +
deciduous +
palmate +  and pinnate +
connate;distinct +
Flowering Dec–Mar(–Apr) +  and fruiting Mar–Jun. +
[2-]3-carpellate +
Not. Milit. Reconn., +
gray;mottled light +
3.5 cm35 mm <br />0.035 m <br /> (?) +
cylindric-ovoid +
1.8 cm18 mm <br />0.018 m <br /> (?) +
distinct +  and connate +
decumbent +  and erect +
multifid +  and 2-fid +
0 cm0 mm <br />0 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Stillingia spinulosa +
Stillingia +
species +
spikelike +
blackened +
prominent +
not incurved +
perennial +  and annual +