Descurainia sophioides

(Fischer ex Hooker) O. E. Schulz in H. G. A. Engler

in H. G. A. Engler, Pflanzenr. 86[IV,105]: 316. 1924.

Basionym: Sisymbrium sophioides Fischer ex Hooker Fl. Bor.-Amer. 1: 61, plate 20. 1830
Synonyms: Hesperis arctica (E. Fournier) Kuntze Sisymbrium arcticum E. Fournier Sophia sophioides (Fischer) A. Heller
Treatment appears in FNA Volume 7. Treatment on page 529. Mentioned on page 518, 519, 520.

Annuals or biennials; eglandular or glandular distally; glabrate to moderately pubescent, trichomes dendritic, sometimes mixed with simple ones. Stems erect, unbranched or sometimes branched distally, (0.5–) 1.5–11 (–18) dm. Basal leaves: petiole 0.5–5 cm; blade pinnate or, sometimes, 2-pinnate, broadly oblanceolate to ovate in outline, 2.5–11.4 (–15.2) cm, lateral lobes lanceolate, (to 10 × 4 mm), margins incised. Cauline leaves sessile or shortly petiolate; blade smaller distally, distal lobes often narrower, surfaces often glabrous or sparsely pubescent. Racemes elongated or not in fruit, (flowers overtopped by developing fruits). Fruiting pedicels divaricate to ascending, (often recurved in age), slender, (3–) 4–9 (–13) mm. Flowers: sepals erect, yellowish, oblong, 1.6–2.7 mm, glabrous; petals narrowly oblanceolate, 2–2.5 × 0.3–0.6 mm; median filaments 2.5–3.5 mm; anthers 0.3–0.4 mm. Fruits erect to widely spreading, narrowly linear, slightly torulose, (9–) 14–30 (–34) × 0.6–1.1 mm, (usually terete, rarely slightly flattened, often curved inward); valves each with obscure midvein; septum not veined; ovules 30–62 per ovary; style obsolete, 0.07–0.3 mm, glabrous. Seeds uniseriate, light-brown, narrowly oblong, 1–1.5 × 0.3–0.5 mm. 2n = 14.


Phenology: Flowering Jun–Sep.
Habitat: Open meadows, eroded peat, roadsides, disturbed and waste sites, rocky outcrops, mining dumps, gravelly grounds, stream banks, gullies
Elevation: 0-1000 m

Distribution

V7 836-distribution-map.gif

B.C., Man., N.W.T., Nunavut, Yukon, Alaska, Asia (Russian Far East), Asia (Siberia)

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Descurainia sophioides"
oblong +  and ovate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Barbara E. Goodson +  and Ihsan A. Al-Shehbaz +
(Fischer ex Hooker) O. E. Schulz in H. G. A. Engler +
Sisymbrium sophioides +
appendaged +  and unappendaged +
11.4 cm114 mm <br />0.114 m <br /> (15.2 cm152 mm <br />0.152 m <br />) +
not auriculate +
dissected +, repand +, sinuate +, crenate +  and dentate +
broadly oblanceolate;ovate +
smaller +
2.5 cm25 mm <br />0.025 m <br /> (11.4 cm114 mm <br />0.114 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
petiolate +  and sessile +
well-developed +
distinct +
not +  and differentiated +
emarginate +  and entire +
B.C. +, Man. +, N.W.T. +, Nunavut +, Yukon +, Alaska +, Asia (Russian Far East) +  and Asia (Siberia) +
0-1000 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
3 cm30 mm <br />0.03 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (3 cm30 mm <br />0.03 m <br />) +
erect +  and widely spreading +
torulose +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Open meadows, eroded peat, roadsides, disturbed and waste sites, rocky outcrops, mining dumps, gravelly grounds, stream banks, gullies +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
entire +, dentate +  and pinnatisect +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and yellow +
2mm;2.5mm +
rudimentary +
oblanceolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Jun–Sep. +
trinucleate +  and 3(-11)-colpate +
in H. G. A. Engler, Pflanzenr. +
bracteate;ebracteate +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
slender +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
mucilaginous +
biseriate +  and uniseriate +
not +  and mucilaginous +
light-brown +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
persistent +  and caducous +
distinct +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
reduced +
terete +, torulose +, obovoid +, ellipsoid +, fusiform +, clavate +, oblong +  and linear +
terete +, torulose +, obovoid +, ellipsoid +, fusiform +, clavate +, oblong +  and linear +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
2-lobed +, entire +, conical +  and capitate +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.007 cm0.07 mm <br />7.0e-5 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
pubescent +  and glabrous +
Hesperis arctica +, Sisymbrium arcticum +  and Sophia sophioides +
Descurainia sophioides +
Descurainia +
species +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
glandular +  and eglandular +
biennial +  and annual +
glabrate +  and moderately pubescent +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +