Caulanthus barnebyi

Rollins & P. K. Holmgren

Brittonia 32: 148, fig. 1. 1980.

EndemicConservation concern
Treatment appears in FNA Volume 7. Treatment on page 679. Mentioned on page 678, 680.

Perennials; glabrous throughout. Stems erect or ascending, unbranched or branched distally, 5–11 dm. Basal leaves not rosulate; petiole 1.5–3.8 cm; blade broadly obovate to broadly ovate or oblong, 3.5–15.5 cm × 22–100 mm, margins entire or coarsely dentate-sinuate. Cauline leaves (distalmost) shortly petiolate to subsessile; blade linear to lanceolate or oblanceolate, margins entire. Racemes (densely flowered), without a terminal cluster of sterile flowers. Fruiting pedicels ascending, 5–17 mm. Flowers: sepals erect (purplish or sometimes green), ovate-oblong to lanceolate, 7.5–11 × 2.5–3 mm (equal); petals creamy white (with prominent purple or brown veins),12.5–18.5 mm, blade 6–8 × 2–2.5 mm, not or slightly crisped, claw oblanceolate, 5–9 × 1.2–2 mm; filaments tetradynamous, median pairs 3–5 mm, lateral pair 2.5–4.5 mm; anthers narrowly oblong, equal, 3–4.5 mm. Fruits divaricate to ascending (often distinctly curved), terete, 5.7–12.5 cm × 1.7–2.3 mm; valves each with obscure midvein; ovules 76–90 per ovary; style usually obsolete, rarely to 2.5 mm; stigma strongly 2-lobed (lobes to 0.4 mm, connivent, opposite replum). Seeds 1.4–2.1 × 0.8–1.2 mm. 2n = 20.


Phenology: Flowering May–Jun.
Habitat: Dry, steep slopes, rocky outcrops, on slate, metamorphic, or igneous substrates
Elevation: 1300-1500 m

Discussion

Of conservation concern.

Caulanthus barnebyi is known from Humboldt and Pershing 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 barnebyi"
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Ihsan A. Al-Shehbaz +
Rollins & P. K. Holmgren +
appendaged +  and unappendaged +
not +  and auriculate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
pinnatifid +, lobed +, sinuate +  and dentate +
crisped;linear;lanceolate or oblanceolate +
much smaller +  and reduced +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
shortly petiolate +  and subsessile +
well-developed +
distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
oblanceolate +
well-differentiated +
1.2mm;2mm +
emarginate +  and entire +
incumbent +  and accumbent +
obliquely +  and incumbent +
1300-1500 m +
straight +  and curved +
connate +  and distinct +
lateral +  and median +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
zygomorphic +  and actinomorphic +
latiseptate +  and sessile +
5.7 cm57 mm <br />0.057 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
Dry, steep slopes, rocky outcrops, on slate, metamorphic, or igneous substrates +
sessile +, subsessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
dentate-sinuate;entire +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
creamy white +
rudimentary +
crisped +, channeled +, linear +  and oblanceolate +
1.25 cm12.5 mm <br />0.0125 m <br /> (1.85 cm18.5 mm <br />0.0185 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
Flowering May–Jun. +
trinucleate +  and 3(-11)-colpate +
stout +  and slender +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
mucilaginous +
margined +  and winged +
aseriate +, uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
subglobose +, ovoid +, oblong +  and flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
not basally +  and saccate +
persistent +  and caducous +
distinct +
ovate-oblong +  and lanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 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 /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Guillenia +, Microsisymbrium +  and Stanfordia +
Caulanthus barnebyi +
Caulanthus +
species +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
perennial +, biennial +  and annual +
subshrub +  and shrub +
aquatics +  and terrestrial +
glabrous +  and pubescent +