Ambrosia ambrosioides

(Delpino) W. W. Payne

J. Arnold Arbor. 45: 410. 1964.

Basionym: Xanthidium ambrosioides Delpino Studi Lign. Anemof. 63 (1871)
Treatment appears in FNA Volume 21. Treatment on page 12. Mentioned on page 10, 13.

Shrubs, 60–150+ cm. Stems erect. Leaves mostly alternate; petioles 10–35 mm; blades lanceolate to narrowly triangular, 50–150+ × 18–55+ mm, bases truncate to cordate, margins coarsely toothed (not spiny), abaxial and adaxial faces ± hirsutulous and glanddotted. Pistillate heads clustered on lateral axes, proximal to staminates; florets 4–5. Staminate heads: peduncles 2–4 (–12) mm; involucres ± saucer-shaped, 4–6+ mm diam., ± hirsutulous; florets 40–60+. Burs: bodies ± fusiform, 6–8+ mm, stipitate-glandular, spines 60–80+, scattered, subulate, 4–6 mm, tips uncinate. 2n = 36.


Phenology: Flowering Mar–May.
Habitat: Sandy soils, washes, banks
Elevation: (100–)500–1000+ m

Distribution

V21-7-distribution-map.gif

Ariz., Calif., Mexico (Baja California), Mexico (Baja California Sur), Mexico (Chihuahua), Mexico (Durango), Mexico (Sonora)

Discussion

Ambrosia ambrosioides has been reported from California; it may occur there.

Selected References

None.

Lower Taxa

None.
... more about "Ambrosia ambrosioides"
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 +
(Delpino) W. W. Payne +
truncate +  and cordate +
Xanthidium ambrosioides +
compound +  and simple +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lanceolate;narrowly triangular +
18mm;55mm +
winged;ribbed;winged;ribbed +
stipitate-glandular +
tuberculate +  and rugose +
fusiform +
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) +, Mexico (Baja California Sur) +, Mexico (Chihuahua) +, Mexico (Durango) +  and Mexico (Sonora) +
(100–)500–1000+ m +
stipitate-glandular +, glabrate +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy soils, washes, banks +
staminate +  and pistillate +
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
membranous +  and scarious +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
saucer--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 +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Mar–May. +
5 +  and 16 +
unequal +  and subequal +
J. Arnold Arbor. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
60 (?) +  and 80 (?) +
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 ambrosioides +
Ambrosia +
species +
campanulate +  and cylindric +
uncinate +
toothed +  and entire +
perennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (400 cm4,000 mm <br />4 m <br />) +