Dithyrea maritima

(Davidson) Davidson in A. Davidson and G. L. Moxley

in A. Davidson and G. L. Moxley, Fl. S. Calif., 151. 1923.

Conservation concern
Basionym: Biscutella californica var. maritima Davidson Erythea 2: 179. 1894
Synonyms: Dithyrea californica var. maritima Davidson ex B. L. Robinson
Treatment appears in FNA Volume 7. Treatment on page 608. Mentioned on page 607.

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. Fruiting pedicels 1.5–2.5 mm. 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. 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.


Phenology: Flowering Mar–Aug.
Habitat: Seashores, coastal sand dunes
Elevation: 0-50 m

Distribution

V7 994-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.

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

... more about "Dithyrea maritima"
sagittate +  and linear +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rounded +
Ihsan A. Al-Shehbaz +
(Davidson) Davidson in A. Davidson and G. L. Moxley +
rounded +  and cuneate +
Biscutella californica var. maritima +
appendaged +  and unappendaged +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
repand +, dentate +  and pinnatifid +
oblong;ovate;broadly ovate;suborbicular or oblanceolate +
much smaller +  and reduced +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
shortly petiolate +  and subsessile +
well-developed +
distinct +
undifferentiated +
not +  and differentiated +
emarginate +  and entire +
Calif. +  and Mexico (Baja California) +
0-50 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
tetradynamous +
purplish;lavender;purplish;lavender;white +
lingulate +
2-valved +  and capsular +
not winged +, stipitate +  and sessile +
angustiseptate +
latiseptate +  and unsegmented +
angustiseptate +  and terete +
Seashores, coastal sand dunes +
subsessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
entire +  and dentate +
repand;repand +
median +  and lateral +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and purplish +
12mm;15mm +
rudimentary +
cruciform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Mar–Aug. +
trinucleate +  and 3(-11)-colpate +
in A. Davidson and G. L. Moxley, Fl. S. Calif., +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
flattened +  and rounded +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
oblong +  and flattened +
indurate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +  and caducous +
distinct +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
Conservation concern +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
decumbent +  and erect +
entire +  and capitate +
2-lobed +  and entire +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Dithyrea californica var. maritima +
Dithyrea maritima +
Dithyrea +
species +
simple +  and sessile +
forked +  and scale-like +
8mm;11mm +
pubescent +  and glabrous +
suborbicular +
8mm +  and 10mm +
anastomosing +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
glabrous +  and pubescent +