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.
Revision as of 18:29, 29 July 2020 by imported>Volume Importer
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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 +