Ambrosia ilicifolia

(A. Gray) W. W. Payne

J. Arnold Arbor. 45: 425. 1964.

Basionym: Franseria ilicifolia A. Gray Proc. Amer. Acad. Arts 11: 77. 1876
Treatment appears in FNA Volume 21. Treatment on page 12. Mentioned on page 10.

Shrubs, 30–50 (–120+) cm. Stems erect. Leaves mostly alternate; petioles 0–2 mm; blades (green) elliptic to ovate, 25–60+ × 12–35+ mm, bases rounded to truncate, margins spiny-toothed, abaxial and adaxial faces ± hirtellous (on veins) and stipitate-glandular. Pistillate heads clustered, proximal to staminates; florets 2. Staminate heads: peduncles 2–8 (–12) mm; involucres ± saucer-shaped, 9–15+ mm diam., ± hirtellous and stipitate-glandular; florets 20–40+. Burs: bodies ± globose, 6–8 mm, stipitate-glandular, spines 40–50+, scattered, subulate, 4–6 mm, tips straight or ± uncinate. 2n = 36.


Phenology: Flowering Jan–Apr.
Habitat: Sandy washes, benches
Elevation: 30–500 m

Distribution

V21-6-distribution-map.gif

Ariz., Calif., Mexico (Baja California), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ambrosia ilicifolia"
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 +
rounded +  and truncate +
Franseria ilicifolia +
compound +  and simple +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
elliptic;ovate +
12mm;35mm +
winged;ribbed;winged;ribbed +
stipitate-glandular +
tuberculate +  and rugose +
globose +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 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. +, Calif. +, Mexico (Baja California) +  and Mexico (Sonora) +
30–500 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 +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
saucer--shaped +
conspicuous +
petiolate +  and sessile +
incurved;erect +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
spiny-toothed +
connate +  and distinct +
2-carpellate +
stipitate-glandular +, hirtellous +  and villous +
spatulate;linear +
membranous +
persistent +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Jan–Apr. +
5 +  and 16 +
unequal +  and subequal +
J. Arnold Arbor. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
40 (?) +  and 50 (?) +
subulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
prostrate +  and decumbent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Franseria +  and Hymenoclea +
Ambrosia ilicifolia +
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 />) +