Boechera dentata

(Rafinesque) Al-Shehbaz & Zarucchi

Harvard Pap. Bot. 13: 293. 2008.

Basionym: Shortia dentata Rafinesque Autik. Bot., 17. 1840
Synonyms: Arabis dentata var. phalacrocarpa M. Hopkins Arabis perstellata var. shortii Fernald Arabis shortii (Fernald) Gleason Arabis shortii var. phalacrocarpa (M. Hopkins) Steyermark Boechera shortii (Rafinesque) Green Iodanthus dentatus
Treatment appears in FNA Volume 7. Treatment on page 373. Mentioned on page 353, 357, 359, 361.

Biennials; short-lived; sexual; caudex present or absent. Stems usually 2–4 per plant or caudex branch, arising from margin of rosette near ground surface, or arising laterally proximal to sterile shoots, 2–6 dm, pubescent proximally, trichomes short-stalked, 2–4-rayed, 0.15–0.4 mm, sparsely pubescent or glabrous distally. Basal leaves: blade obovate to oblanceolate, (6–) 10–45 mm wide, margins dentate, not ciliate, surfaces sparsely pubescent, abaxially trichomes short-stalked, 3-rayed or 4-rayed, 0.15–0.4 mm, adaxially simple ones, 0.4–1 mm. Cauline leaves: 4–20, rarely concealing stem; blade auricles 1–8 mm, surfaces of distalmost leaves sparsely pubescent. Racemes 14–66-flowered, sparingly branched. Fruiting pedicels divaricate-ascending to slightly descending, straight, 1–6 mm, glabrous or pubescent, trichomes appressed, branched. Flowers divaricate at anthesis; sepals glabrous or sparsely pubescent; petals white or cream, 2–3.5 × 0.7–1 mm, glabrous; pollen ellipsoid. Fruits divaricate-ascending to slightly descending, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 1.3–4.2 cm × 0.7–0.8 mm; valves usually sparsely pubescent throughout, rarely glabrous; ovules 14–44 per ovary; style 0.1–0.5 mm. Seeds uniseriate, 0.7–1.1 × 0.5–0.6 mm; not winged.


Phenology: Flowering Apr–Jun.
Habitat: Bluffs and rocky ledges, wooded slopes, floodplains
Elevation: 100-300 m

Distribution

V7 512-distribution-map.gif

Ont., Ala., Ark., D.C., Ill., Ind., Iowa, Kans., Ky., Md., Mich., Minn., Mo., Nebr., N.Y., Ohio, Okla., Pa., S.Dak., Tenn., Va., W.Va., Wis.

Discussion

Sisymbrium dentatum Torrey is an illegitimate name that pertains to Iodanthus dentatus.

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 "Boechera dentata"
oblong +  and ovate +
Ihsan A. Al-Shehbaz +  and Michael D. Windham +
(Rafinesque) Al-Shehbaz & Zarucchi +
not +  and rosulate +
Shortia dentata +
appendaged +  and unappendaged +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
lyrate-pinnatifid +, dentate +  and entire +
dissected +, repand +, sinuate +, crenate +  and dentate +
obovate;oblanceolate +
much smaller +  and reduced +
10mm;45mm +
urceolate +, campanulate +  and tubular +
branched +  and simple +
petiolate +  and sessile +
well-developed +
indistinct +
not +  and differentiated +
emarginate +  and entire +
Ont. +, Ala. +, Ark. +, D.C. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Md. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.Y. +, Ohio +, Okla. +, Pa. +, S.Dak. +, Tenn. +, Va. +, W.Va. +  and Wis. +
1.3 cm13 mm <br />0.013 m <br /> (4.2 cm42 mm <br />0.042 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
100-300 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
curved +  and straight +
divaricate-ascending +  and slightly descending +
torulose +, falcate +, lanceolate +, oblong +  and linear +
Bluffs and rocky ledges, wooded slopes, floodplains +
annular +  and semiannular +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
prominent +  and obscure +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
rudimentary +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering Apr–Jun. +
trinucleate +  and 3(-11)-colpate +
ellipsoid +
Harvard Pap. Bot. +
branched;14-66-flowered +
elongated +
reflexed +, ascending +  and erect +
slender +
mucilaginous +
biseriate +, sub-biseriate +  and uniseriate +
not +  and mucilaginous +
White (?) +, Black (?) +, Brown (?) +  and Yellow (?) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
orbicular +, oblong +  and flattened +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
pubescent +  and glabrous +
oblong +  and ovate +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
2 +  and 4 +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Arabis dentata var. phalacrocarpa +, Arabis perstellata var. shortii +, Arabis shortii +, Arabis shortii var. phalacrocarpa +, Boechera shortii +  and Iodanthus dentatus +
Boechera dentata +
Boechera +
species +
branched +, simple +  and short-stalked +
glabrous +  and pubescent +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
coiled +, 1-7-veined +  and veined +
glabrous +  and pubescent +
anastomosing +
biennial +  and short-lived +
divaricate-ascending +  and slightly descending +
pubescent +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
glabrous +  and pubescent +