Caulanthus hallii

Payson

Ann. Missouri Bot. Gard. 9: 290. 1923.

EndemicConservation concern
Synonyms: Streptanthus hallii (Payson) Jepson
Treatment appears in FNA Volume 7. Treatment on page 682. Mentioned on page 678.

Annuals; sparsely to densely hispid or subglabrate. Stems erect or ascending, unbranched or branched distally, (hollow, sometimes slightly inflated), 2–12 dm. Basal leaves rosulate; petiole 0.5–3.5 cm; blade oblanceolate to oblong (in outline), 1.5–11.5 cm × 5–55 mm, margins pinnately lobed (lobes dentate). Cauline leaves (distalmost) sessile; blade lanceolate-linear, margins entire, (surfaces sparsely hispid). Racemes (somewhat lax), without a terminal cluster of sterile flowers. Fruiting pedicels ascending, 9–25 mm, hispid or subglabrate. Flowers: sepals erect, (creamy white), lanceolate to ovate, 3–6.5 × 1.8–2.5 mm (equal); petals creamy white, 6–10.5 mm, blade 3–4 × 1.5–2 mm, not crisped, claw narrowly oblanceolate or oblong, 3–6 × 2–3 mm; filaments in 3 unequal pairs, abaxial pair 2.5–6 mm, lateral pair 1.5–4.5, adaxial pair 4.5–8 mm; anthers narrowly oblong, unequal, 2–3 mm (adaxial pair slightly smaller). Fruits divaricate to ascending (sometimes curved), terete, 6.5–12.5 cm × 1.8–2.2 mm; valves each with prominent midvein; ovules 78–96per ovary; style to 2 mm; stigma slightly 2-lobed. Seeds 1–1.6 × 0.7–1 mm.


Phenology: Flowering Mar–May.
Habitat: Rocky areas, chaparral, scrub
Elevation: 150-1800 m

Discussion

Of conservation concern.

Caulanthus hallii is known from Riverside and San Diego counties.

Selected References

None.

Lower Taxa

None.

"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 "Caulanthus hallii"
0.25 cm2.5 mm <br />0.0025 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
unequal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Ihsan A. Al-Shehbaz +
Payson +
appendaged +  and unappendaged +
not +  and auriculate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pinnatifid +, lobed +, sinuate +  and dentate +
not crisped;lanceolate-linear;oblanceolate;oblong +
much smaller +  and reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
oblong +  and oblanceolate +
well-differentiated +
2mm;3mm +
emarginate +  and entire +
incumbent +  and accumbent +
obliquely +  and incumbent +
150-1800 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
zygomorphic +  and actinomorphic +
latiseptate +  and sessile +
6.5 cm65 mm <br />0.065 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Rocky areas, chaparral, scrub +
sessile +, subsessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
unequal +
creamy white +
rudimentary +
crisped +, channeled +, linear +  and oblanceolate +
0.6 cm6 mm <br />0.006 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Mar–May. +
trinucleate +  and 3(-11)-colpate +
Ann. Missouri Bot. Gard. +
subglabrate +  and hispid +
stout +  and slender +
0.9 cm9 mm <br />0.009 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
mucilaginous +
margined +  and winged +
aseriate +, uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
subglobose +, ovoid +, oblong +  and flattened +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
not basally +  and saccate +
persistent +  and caducous +
distinct +
lanceolate +  and ovate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
Endemic +  and Conservation concern +
tetradynamous +
unequal +
branched +  and unbranched +
procumbent +  and decumbent +
ascending +  and erect +
not +  and capitate +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Streptanthus hallii +
Caulanthus hallii +
Caulanthus +
species +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
subglabrate +  and hispid +
perennial +, biennial +  and annual +
subshrub +  and shrub +
aquatics +  and terrestrial +
glabrous +  and pubescent +