Descurainia incisa subsp. paysonii

(Detling) Rollins

Harvard Pap. Bot. 1(4): 46. 1993.

Basionym: Descurainia pinnata subsp. paysonii Detling Amer. Midl. Naturalist 22: 515. 1939
Synonyms: Descurainia incisa var. paysonii (Detling) N. H. Holmgren Descurainia pinnata var. paysonii (Detling) S. L. Welsh & Reveal
Treatment appears in FNA Volume 7. Treatment on page 524. Mentioned on page 523, 525.

Plants eglandular, often canescent. Basal leaves: lateral lobes 2 or 3 (or 4) pairs, margins usually entire. Cauline leaves: lobes linear, margins entire. Racemes eglandular. Fruiting pedicels horizontal to divaricate, (10–) 13–25 (–30) mm. Fruits curved inward.


Phenology: Flowering May–Jun.
Habitat: Disturbed grounds, rocky hillsides, pinyon-juniper woodlands, grassy benches, flats
Elevation: 1500-2300 m

Discussion

Subspecies paysonii and incisa are reliably separated by their pedicel length, orientation, and shape and margin of lateral leaf lobes.

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

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 +
(Detling) Rollins +
Descurainia pinnata subsp. paysonii +
appendaged +  and unappendaged +
not auriculate +
dissected +, repand +, sinuate +, crenate +  and dentate +
obovate;oblanceolate +
smaller +
1.5 cm15 mm <br />0.015 m <br /> (10.3 cm103 mm <br />0.103 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
petiolate +  and sessile +
well-developed +
distinct +
not +  and differentiated +
emarginate +  and entire +
lanceolate +  and oblong +
Colo. +, N.Mex. +  and Utah. +
1500-2300 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
erect +  and ascending +
torulose +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Disturbed grounds, rocky hillsides, pinyon-juniper woodlands, grassy benches, flats +
oblong;lanceolate or linear +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
usually dentate;incised or entire rarely pinnatifid or crenate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and yellow +
1.7mm;2.8mm +
rudimentary +
oblanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
Flowering May–Jun. +
trinucleate +  and 3(-11)-colpate +
Harvard Pap. Bot. +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
slender +
1.3 cm13 mm <br />0.013 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
mucilaginous +
biseriate +  and uniseriate +
not +  and mucilaginous +
reddish-brown +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
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 +
erect +  and ascending +
pubescent +  and glabrous +
oblong +  and ovate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.24 cm2.4 mm <br />0.0024 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 +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
glabrous +  and pubescent +
Descurainia incisa var. paysonii +  and Descurainia pinnata var. paysonii +
Descurainia incisa subsp. paysonii +
Descurainia incisa +
subspecies +
with distinct midvein +  and not veined +
pubescent +  and glabrous +
anastomosing +
eglandular +  and glandular +
canescent +, pubescent +  and glabrous +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +