Pectis papposa var. grandis

D. J. Keil

Brittonia 26: 32. 1974.

Treatment appears in FNA Volume 21. Treatment on page 228. Mentioned on page 229.
Revision as of 22:31, 29 July 2020 by imported>Volume Importer
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Plants 5–30 cm. Leaves 20–60 mm. Peduncles 10–40 mm. Phyllaries 5–8 mm. Ray corollas 5–8 mm. Disc-florets 12–24 (–34); corollas 3–5 mm. Cypselae 3–5.5 mm; disc pappi 2.5–4 mm. 2n = 24.


Phenology: Flowering Jun–Dec.
Habitat: Deserts, desert grasslands, dry woodlands, roadsides
Elevation: 1000–2000 m

Distribution

V21-550-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila)

Discussion

Variety grandis is restricted for the most part to the Chihuahuan Desert with outlying populations in central Arizona. It often grows with Pectis angustifolia var. angustifolia in trans-Pecos Texas, especially on roadsides; occasional hybrids have been noted.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
darkened +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
cymiform +, open +  and congested +
indeterminate +  and determinate +
David J. Keil +
D. J. Keil +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decurrent +
compound +  and simple +
obovate;oblong;obovate;oblong;oblanceolate;linear to elliptic +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
yellow +  and reddened +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
strigillose +  and short-pilose +
cylindric +  and narrowly clavate ribbed or angled +
fertile +  and bisexual +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
1000–2000 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Deserts, desert grasslands, dry woodlands, roadsides +
cymiform +, corymbiform +, discoid +  and radiate +
in congested to open , cymiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
spicy-scented +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
campanulate;cylindric +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +  and 6 cm60 mm <br />0.06 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
coroniform +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Jun–Dec. +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
3 +  and 15 +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
flat;hemispheric +
5 +  and 20 +
exalbuminous +
branched +  and simple to much +
puberulent +  and glabrous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Tageteae +
Pectis papposa var. grandis +
Pectis papposa +
variety +
cylindric +
toothed +  and entire +
1 cm10 mm <br />0.01 m <br /> (30 cm300 mm <br />0.3 m <br />) +
50 cm500 mm <br />0.5 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +