Streptanthus insignis

Jepson

Man. Fl. Pl. Calif., 420. 1925.

IllustratedEndemic
Treatment appears in FNA Volume 7. Treatment on page 717. Mentioned on page 702.

Annuals; hirsute-hispid throughout. Stems unbranched or branched distally, 1.2–6 dm. Basal leaves not rosulate; shortly petiolate; blade lanceolate to oblanceolate, 2–8 cm, margins coarsely dentate to pinnatifid. Cauline leaves: blade lanceolate, 1.3–9 cm × 2–20 mm, (smaller distally), base auriculate, margins dentate. Racemes ebracteate, (lax, with a terminal cluster of dark purple or greenish yellow sterile flowers). Fruiting pedicels divaricate to ascending, (straight, curved upward, or recurved), 3–8 mm. Flowers: calyx campanulate; sepals (of fertile flowers) dark purple, purplish, or greenish yellow, (oblong to lanceolate), 4–6 mm, (8–14 mm in sterile flowers), not or slightly keeled, (hirsute-hispid in fertile flowers, glabrous in sterile flowers); petals: (abaxial pair spreading and reflexed, adaxial pair parallel and erect), purplish white, lemon-yellow, or yellowish white (with darker midvein), 7–12 mm, blade 2–4 × 1–2 mm, margins crisped, claw 5–8 mm, about as wide as blade; stamens in 3 unequal pairs; filaments: abaxial pair (distinct), 4–6 mm, lateral pair 3–4 mm, adaxial pair (connate their entire length), 6–9 mm; anthers: abaxial and lateral pairs fertile, 1.3–2 mm, adaxial pairs sterile, 0.2–0.7 mm; gynophore 0.4–1 mm. Fruits ascending or reflexed, smooth, straight or slightly curved, flattened, 3.5–11.4 cm × 1.5–2 mm; valves each with prominent midvein, (glabrate or sparsely to densely hispid, trichomes to 1.7 mm); replum straight; ovules 32–94 per ovary; style 1–2 mm; stigma entire. Seeds broadly oblong, 1.4–2 × 1–1.3 mm; wing 0.15–0.3 mm wide, continuous.

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Racemes with terminal cluster of sterile flowers dark purple; sepals of fertile flowers dark purplish; petals purplish white; fruit valves usually glabrate or sparsely hispid, rarely densely so. Streptanthus insignis subsp. insignis
1 Racemes with terminal cluster of sterile flowers greenish yellow or purple; sepals of fertile flowers greenish yellow or purplish; petals lemon-yellow or yellowish white; fruit valves moderately to densely hispid. Streptanthus insignis subsp. lyonii

"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 "Streptanthus insignis"
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
lateral +  and abaxial +
linear +  and oblong +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ihsan A. Al-Shehbaz +
Jepson +
auriculate +
appendaged +  and unappendaged +
not +  and auriculate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lyrate-pinnatifid +, dentate +  and entire +
dissected +, repand +, sinuate +, crenate +  and dentate +
lanceolate;lanceolate;oblanceolate +
much smaller +  and reduced +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
campanulate +
branched +  and simple +
petiolate +  and sessile +
well-developed +
distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
differentiated +
emarginate +  and entire +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
zygomorphic +  and actinomorphic +
latiseptate +, stipitate +  and subsessile +
curved +  and straight +
3.5 cm35 mm <br />0.035 m <br /> (11.4 cm114 mm <br />0.114 m <br />) +
reflexed +  and ascending +
flattened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
crisped;coarsely dentate;pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
unequal +
yellowish white +, lemon-yellow +  and purplish white +
rudimentary +
oblong +  and ovate +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
trinucleate +  and 3(-11)-colpate +
Man. Fl. Pl. Calif., +
stout +  and slender +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
mucilaginous +
aseriate +, uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
greenish yellow +, purplish +  and dark purple +
persistent +  and caducous +
distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
Illustrated +  and Endemic +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
ascending +  and erect +
2-lobed +  and entire +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Agianthus +, Cartiera +, Disaccanthus +, Euklisia +, Icianthus +, Mesoreanthus +, Microsemia +, Mitophyllum +  and Pleiocardia +
Streptanthus insignis +
Streptanthus +
species +
dendritic +  and simple +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
perennial +, biennial +  and annual +
subshrub +  and shrub +
aquatics +  and terrestrial +
glabrous +  and pubescent +
0.15mm;0.3mm +