familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Ambrosiinae
genusAmbrosia
speciesAmbrosia deltoidea

Ambrosia deltoidea

(Torrey) W. W. Payne

J. Arnold Arbor. 45: 421. 1964.

John L. Strother
Basionym: Franseria deltoidea Torrey Smithsonian Contr. Knowl. 6(2): 15. 1853
Treatment appears in FNA Volume 21. Treatment on page 14. Mentioned on page 11.

Shrubs, 30–80+ cm. Stems erect. Leaves mostly alternate; petioles 5–12+ mm; blades deltate to lance-deltate, 12–25 (–35) × 5–12 (–18) mm, bases cuneate to truncate, margins toothed, abaxial faces ± densely tomentulose (between veins), adaxial faces sparsely tomentulose, glabrescent. Pistillate heads clustered, proximal to staminates; florets 2–3. Staminate heads: peduncles 0.5–3 (–5) mm; involucres ± cupshaped, 4–8 mm diam., tomentulose; florets 12–30+. Burs: bodies ± fusiform to globose, 3–4 mm, usually stipitate-glandular (little, if at all, tomentulose), spines 20–30+, scattered or on distal 1/2, ± subulate (the proximal basally flattened), 1–3 mm, tips usually straight, sometimes uncinate. 2n = 36.


Phenology: Flowering Feb–May.
Habitat: Sandy washes, benches
Elevation: 200–1000 m

Distribution

V21-12-distribution-map.gif

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

Discussion

Some specimens are intermediate for the characteristics that distinguish Ambrosia deltoidea and A. chenopodiifolia. The type of A. deltoidea may be better treated as conspecific with that of A. chenopodiifolia.

Selected References

None.

Lower Taxa

None.

"stipitate-glandular" is not a number.

... more about "Ambrosia deltoidea"
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2n chromosome quantity
36 +
Abaxial face pubescence
tomentulose +
Adaxial face pubescence
glabrescent +  and tomentulose +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
coherent +  and distinct +
Anther theca coloration
pale +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex size
subequal +
Apex texture
scarious +
Apical appendage presence
absent +
Apical appendage shape
usually ovate +  and lanceolate +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
spiciform +, racemiform +, paniculiform +, glomerate +  and corymbiform +
Array development
indeterminate +  and determinate +
Author
John L. Strother +
Authority
(Torrey) W. W. Payne +
Band architecture
continuous +
Band quantity
1 +
Base shape
cuneate +  and truncate +
Basionyms
Franseria deltoidea +
Blade architecture
compound +  and simple +
Blade atypical length
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Blade atypical width
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Blade length
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Blade shape
deltate;lance-deltate +
Blade width
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Body shape
less fusiform;globose +
Body some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Bractlet quantity
1;15 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle shape
Plumose (?) +
Calyculus presence
absent +
Calyculus quantity
Of 1 (15+ bractlets) +
Corolla architecture
zygomorphic +
Corolla coloration
purplish +  and whitish +
Corolla presence
absent +
Corolla shape
tubular +  and more or less filiform +
Cypsela architecture
winged +
Cypsela architecture or pubescence or relief
smooth +
Cypsela architecture or shape
spiny +
Cypsela growth form
dimorphic +
Cypsela position
enclosed +
Cypsela pubescence
villous +, strigillose +, hispidulous +, glabrous +  and warty +
Cypsela relief
tuberculate +
Cypsela shape
globose +  and obovoid pyramidal pyriform obconic or fusiform +
Cypsela texture
hard +
Disc floret architecture
staminate +
Disc floret quantity
5 (60) +
Disc floret reproduction
fertile +  and bisexual +
Distribution
Ariz. +, Mexico (Baja California) +  and Mexico (Sonora) +
Elevation
200–1000 m +
Embryo course
straight +
Face pubescence
stipitate-glandular +, glabrate +  and hairy +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
1;5 +
Floret position
proximal +
Floret quantity
12;30 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Glomerule arrangement
singly +
Habitat
Sandy washes, benches +
Head architecture
staminate +  and pistillate +
Head architecture or arrangement
radiate +
Head architecture or shape
discoid +
Head arrangement
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
Head arrangement or growth form
clustered +
Head development
indeterminate +
Head position
proximal +
Head reproduction
homogamous +  and heterogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Individual head architecture
each +  and sessile +
Inner phyllary texture
membranous +  and scarious +
Involucre diameter
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Involucre position relational
surrounding +
Involucre pubescence
tomentulose +
Involucre shape
cup-shaped +
Lamina prominence
conspicuous +
Leaf architecture
petiolate +  and sessile +
Leaf arrangement
alternate +
Leaf position
cauline +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
Lobe orientation
incurved;erect +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and entire +
Margin shape
toothed +
Number of lower taxa
0 +
Outer phyllary atypical quantity
1 (5) +
Outer phyllary fusion
connate +  and distinct +
Outer phyllary growth form or texture
herbaceous +
Outer phyllary quantity
5 +  and 8 +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Palea pubescence
stipitate-glandular +, hirtellous +  and villous +
Palea quantity
0 +
Palea shape
spatulate;linear +
Palea texture
membranous +
Pappus duration
persistent +
Pappus life cycle
falling +
Pappus presence
absent +
Peduncle atypical some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Peduncle some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
1 (10) +
Petal fusion
connate +
Petiole some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Phenology
Flowering Feb–May. +
Phyllary atypical quantity
30 (80) +
Phyllary duration
persistent +
Phyllary fusion
connate +
Phyllary life cycle
falling +
Phyllary quantity
5 +  and 16 +
Phyllary shape
Lanceovate (Linear) +
Phyllary size
unequal +  and subequal +
Phyllary texture
Herbaceous (Chartaceous) +
Publication title
J. Arnold Arbor. +
Publication year
1964 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
5 (8) +
Ray-floret presence
absent +
Ray-floret quantity
5 (?) +
Ray-floret reproduction
fertile +
Receptacle architecture
paleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle shape
convex;flat +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
8 (12) +
Series quantity
1;1;8 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 12.xml +
Spine arrangement
on distal 1/2 +  and scattered +
Spine quantity
20 (?) +  and 30 (?) +
Spine shape
subulate +
Spine some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Staminal filament fusion
connate +
Stem architecture
branched +
Stem growth form or orientation
prostrate +  and decumbent +
Stem orientation
erect +
Stigmatic papilla presence
absent +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Franseria +  and Hymenoclea +
Taxon family
Asteraceae +
Taxon name
Ambrosia deltoidea +
Taxon parent
Ambrosia +
Taxon rank
species +
Throat shape
campanulate +  and cylindric +
Tip course
straight +
Tip fusion
free +
Tip shape
uncinate +
Tube length or size
longer +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism duration
perennial +  and annual +
Whole-organism some measurement
10 cm100 mm <br />0.1 m <br /> (400 cm4,000 mm <br />4 m <br />) +
Whole organism atypical some measurement
150 cm1,500 mm <br />1.5 m <br /> (400 cm4,000 mm <br />4 m <br />) +
Whole organism growth form
shrub +
Whole organism some measurement
30cm (80cm) +
X chromosome quantity
18 +