Cardamine oligosperma

Nuttall in J. Torrey and A. Gray

in J. Torrey and A. Gray, Fl. N. Amer. 1: 85. 1838.

Weedy
Synonyms: Cardamine acuminata (Nuttall) Rydberg Cardamine hirsuta var. acuminata Nuttall Cardamine hirsuta var. bracteata O. E. Schulz Cardamine hirsuta subsp. oligosperma (Nuttall) O. E. Schulz Cardamine hirsuta var. parviflora Nuttall Cardamine oligosperma var. bracteata (O. E. Schulz) G. S. Torrey Cardamine oligosperma var. lucens G. S. Torrey Cardamine oligosperma var. unijuga (Rydberg) G. S. Torrey Cardamine unijuga
Treatment appears in FNA Volume 7. Treatment on page 479. Mentioned on page 466, 475, 484.

Annuals or biennials; usually sparsely hirsute (at least proximally), rarely glabrous. Rhizomes absent. Stems (simple or few from base), erect to ascending, (not flexuous), unbranched or branched distally, (0.5–) 0.8–3.2 (–4.1) dm, usually pubescent throughout or proximally, rarely glabrous. Basal leaves (persistent to anthesis), rosulate, pinnately compound, 5–9 (–13) -foliolate, 2–8.5 (–11) cm, leaflets petiolulate or subsessile; petiole 1–6 cm; lateral leaflets petiolulate or subsessile, blade obovate to oblanceolate, smaller than terminal, margins entire or crenate; terminal leaflet (petiolule 0.1–0.7 cm), blade usually orbicular to ovate, rarely oblong, 0.4–1.5 (–2.3) cm × 3–10 (–13) mm, base cordate to rounded, margins entire, or crenate-dentate to obscurely 3 or 5-lobed, (surfaces often hirsute, sometimes glabrous). Cauline leaves 3–8, pinnately compound, similar to basal, smaller and fewer distally, petiolate, leaflets petiolulate or subsessile; petiole 0.5–2 cm, base not auriculate. Racemes ebracteate. Fruiting pedicels divaricate-ascending, (2–) 3–9 (–12) mm. Flowers: sepals oblong, 1.3–1.8 (–2) × 0.5–1 mm, lateral pair not saccate basally; petals white, narrowly spatulate to oblanceolate, 2.5–3.5 × 0.9–1.5 mm (not clawed); filaments: median pairs 1.7–2.5 mm, lateral pair 1.2–2 mm; anthers ovate, 0.3–0.5 mm. Fruits linear, (torulose), (1.3–) 1.6–2.8 cm × 1–1.7 mm; (valves glabrous or sparsely pubescent); ovules 16–36 (–42) per ovary; style 0.4–1 (–1.5) mm. Seeds brown, oblong, 1–1.6 × 0.8–1.2 mm. 2n = 16.


Phenology: Flowering Mar–Jul.
Habitat: Stream banks, shady banks, creek bottoms, lakeshores, meadows, moist areas, wooded slopes
Elevation: 50-3300 m

Distribution

V7 738-distribution-map.gif

B.C., Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo., Mexico (Baja California)

Discussion

Selected References

None.

Lower Taxa

None.

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... more about "Cardamine oligosperma"
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Karol Marhold +  and Judita Lihová +
Nuttall in J. Torrey and A. Gray +
5-9(-13)-foliolate +  and compound +
8.5 cm85 mm <br />0.085 m <br /> (11 cm110 mm <br />0.11 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
not auriculate +, cordate +  and rounded +
appendaged +  and unappendaged +
1.5 cm15 mm <br />0.015 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
compound +  and trifoliolate +
lobed +, 1-3-pinnatisect +, toothed +  and entire +
oblong;usually orbicular;ovate +
smaller +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
petiolate +  and compound +
well-developed +
distinct +
differentiated +
emarginate +  and entire +
B.C. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +, Wyo. +  and Mexico (Baja California) +
50-3300 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
lateral +  and median +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
actinomorphic +
not basally +  and saccate +
lilac;purple;lilac;purple;pink;white +
ascending +, spreading +  and erect +
oblanceolate +, spatulate +, obovate +, oblong +  and ovate +
latiseptate +  and unsegmented +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
angustiseptate +, 4-angled +  and terete +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
latiseptate +  and sessile +
torulose +, lanceolate +, oblong +  and linear +
Stream banks, shady banks, creek bottoms, lakeshores, meadows, moist areas, wooded slopes +
semiannular +  and annular +
subsessile +  and petiolulate +
compound +, pinnately +, trifoliolate +  and simple +
alternate +, not +  and rosulate +
basal +  and cauline +
subsessile +  and petiolulate +
connate +  and distinct +
decurrent +
crenate-dentate;obscurely 3-or-5-lobed +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
2.5mm;3.5mm +
rudimentary +
narrowly spatulate +  and oblanceolate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Mar–Jul. +
trinucleate +  and 3(-11)-colpate +
in J. Torrey and A. Gray, Fl. N. Amer. +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
divaricate-ascending +
stout +  and slender +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
flattened +
not +  and mucilaginous +
winged +  and margined +
uniseriate +  and biseriate +
not +  and mucilaginous +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +  and caducous +
distinct +
erect +  and spreading or ascending +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
reduced +
latiseptate +  and unsegmented +
angustiseptate +, 4-angled +  and terete +
latiseptate +  and unsegmented +
angustiseptate +, 4-angled +  and terete +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
prostrate +  and decumbent +
erect +  and ascending +
glabrous +  and pubescent +
2-lobed +, entire +, conical +  and capitate +
subsessile +, sessile +  and petiolate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +
distinct +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Cardamine acuminata +, Cardamine hirsuta var. acuminata +, Cardamine hirsuta var. bracteata +, Cardamine hirsuta subsp. oligosperma +, Cardamine hirsuta var. parviflora +, Cardamine oligosperma var. bracteata +, Cardamine oligosperma var. lucens +, Cardamine oligosperma var. unijuga +  and Cardamine unijuga +
Cardamine oligosperma +
Cardamine +
species +
scale-like +  and forked +
pubescent +, , +  and glabrous +
anastomosing +
biennial +  and annual +
hirsute +  and glabrous +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +