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beach shieldpod, beach spectaclepod

Habit Perennials; (rhizomatous).
Stems

several from base, decumbent, unbranched or branched (few) distally, 1–2.1 dm.

Basal leaves

petiole 1–6(–8) cm;

blade broadly ovate to suborbicular or oblanceolate, 1–5(–6) cm × 7–40 mm, base cuneate, margins dentate, sometimes repand.

Cauline leaves

(distal) shortly petiolate to subsessile;

blade ovate or oblong, 1–3 cm × 8–20 mm, base cuneate, margins entire, sometimes repand.

Racemes

not elongated in fruit.

Flowers

sepals lavender, oblong-linear, (6–)7–10 × 0.8–1.2 mm;

petals white to purplish, 12–15 × 2.5–3.5 mm;

filaments 5.5–7.5 mm;

anthers 2–3 mm.

Fruiting pedicels

1.5–2.5 mm.

Fruits

valves suborbicular, 8–11 × 8–10 mm, base and apex rounded, pubescent, trichomes stellate, sessile, sometimes mixed with basally forked, or, rarely, simple ones (clavate papillae absent);

style 0.3–1 mm.

Seeds

3–4 × 2–2.5 mm.

2n

= 60.

Dithyrea maritima

Phenology Flowering Mar–Aug.
Habitat Seashores, coastal sand dunes
Elevation 0-50 m (0-200 ft)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 7, p. 608.
Parent taxa Brassicaceae > tribe Physarieae > Dithyrea
Sibling taxa
D. californica
Synonyms Biscutella californica var. maritima, D. californica var. maritima
Name authority (Davidson) Davidson: in A. Davidson and G. L. Moxley, Fl. S. Calif., 151. (1923)
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