Ambrosia cordifolia

(A. Gray) W. W. Payne

J. Arnold Arbor. 45: 421. 1964.

Basionym: Franseria cordifolia A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 445. 1884
Treatment appears in FNA Volume 21. Treatment on page 14. Mentioned on page 11.

Shrubs, 30–50+ cm. Stems erect. Leaves mostly alternate; petioles 3–35 mm; blades deltate to rounded-deltate, 10–35 (–80) × 10–30 (–70) mm, bases cordate to truncate, margins coarsely toothed, abaxial faces densely puberulent (including veins), adaxial faces strigillose to scabrellous and glanddotted. Pistillate heads clustered, proximal to staminates; florets (1–) 2. Staminate heads: peduncles 0–1 mm; involucres cupshaped, 2–3 (–5) mm diam., strigillose; florets 8–30+. Burs: bodies ± globose to fusiform, 3–4+ mm, tomentulose and stipitate-glandular, spines 8–20+, scattered, ± subulate (basally navicular), 1–2 mm, tips straight or uncinate.


Phenology: Flowering Mar–Apr.
Habitat: Sandy washes, benches
Elevation: 700–1200 m

Distribution

V21-10-distribution-map.gif

Ariz., Mexico (Sinaloa), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ambrosia cordifolia"
not tailed +, rounded +  and obtuse +
coherent +  and distinct +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, glomerate +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(A. Gray) W. W. Payne +
cordate +  and truncate +
Franseria cordifolia +
compound +  and simple +
3.5 cm35 mm <br />0.035 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
deltate;rounded-deltate +
10mm;30mm +
winged;ribbed;winged;ribbed +
stipitate-glandular +  and tomentulose +
tuberculate +  and rugose +
less globose;fusiform +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
barbellulate +  and barbellate +
purplish +  and whitish +
villous +, strigillose +, hispidulous +, glabrous +  and warty +
tuberculate +
globose +  and obovoid pyramidal pyriform obconic or fusiform +
fertile +  and bisexual +
Ariz. +, Mexico (Sinaloa) +  and Mexico (Sonora) +
700–1200 m +
stipitate-glandular +, glabrate +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy washes, benches +
staminate +  and pistillate +
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
membranous +  and scarious +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
cup-shaped +
conspicuous +
petiolate +  and sessile +
incurved;erect +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
connate +  and distinct +
2-carpellate +
stipitate-glandular +, hirtellous +  and villous +
spatulate;linear +
membranous +
persistent +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Mar–Apr. +
5 +  and 16 +
unequal +  and subequal +
J. Arnold Arbor. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
8 (?) +  and 20 (?) +
subulate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
prostrate +  and decumbent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Franseria +  and Hymenoclea +
Ambrosia cordifolia +
Ambrosia +
species +
campanulate +  and cylindric +
straight +
uncinate +
toothed +  and entire +
perennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (400 cm4,000 mm <br />4 m <br />) +