Argemone chisosensis

G. B. Ownbey

Mem. Torrey Bot. Club 21: 114. 1958.

Treatment appears in FNA Volume 3.

Plants biennial or perennial. Stems 4-8 dm, sparingly to copiously prickly, prickles long, patent. Leaf-blades: abaxial surface prickly on main veins, adaxial surface less prickly to almost unarmed on veins. Inflorescences: buds broadly ellipsoid, body 15-20 × 11-15 mm, prickly, prickles patent; sepal horns terete or angular in cross-section, 7-12 mm, basally prickly. Flowers 7-10 cm broad, usually closely subtended by 1-2 foliaceous bracts; petals white or pale lavender; stamens 150 or more; filaments pale lemon yellow or red; pistil 3-4-carpellate. Capsules narrowly ellipsoid-lanceoloid to ellipsoid-ovoid, 30-45 × 8-13 mm (including stigma and excluding prickles), prickly, surface clearly visible; longest prickles scattered, to 10 mm, interspersed with a few shorter ones. Seeds 1.8-2.2 mm.


Phenology: Flowering and fruiting spring–fall.
Habitat: Arid plains and mountains
Elevation: 900-2000 m

Distribution

V3 1145-distribution-map.gif

Tex., Mexico (Chihuahua and Coahuila)

Discussion

Selected References

None.

Lower Taxa

None.

"/3" 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 "Argemone chisosensis"
unarmed +, prickly to almost +  and prickly +
Gerald B. Ownbey +
G. B. Ownbey +
palmate +  and subpalmate +
1×-lobed +, commonly shallowly +  and unlobed +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
narrowly ellipsoid-lanceoloid +  and ellipsoid-ovoid +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Tex. +  and Mexico (Chihuahua and Coahuila) +
900-2000 m +
red +, yellow +  and pale lemon +
sessile +, pedicellate +  and symmetric +
conspicuous +
7cm;10cm +
transverse +, poricidal +, valvate +  and dehiscence +
Arid plains and mountains +
tipped +  and hollow +
subterminal +
paniculate +  and racemose +
terminal +  and axillary +
alternate +  and opposite or whorled +
cauline +  and basal +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1-2-locular or +  and incompletely completely multilocular +
distinct +
2 times number of sepals +
Flowering and fruiting spring–fall. +
3-4-carpellate +
Mem. Torrey Bot. Club +
white +  and orange +
carunculate +  and arillate +
subglobose +
1.8mm +  and 2.2mm +
list +  and count +
list +  and count +
angular +  and terete +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
3 +  and 2 +
obovate +
decumbent +, spreading +  and erect +
persistent +
3-5(-7)-lobed +
persistent +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
prickly +  and unarmed +
hispid +, glabrous +  and glaucous +
Argemone chisosensis +
Argemone +
species +
perennial +  and biennial +
3 +  and 2 +