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

Ambrosia acanthicarpa

Hooker

Fl. Bor.-Amer. 1: 309. 1833.

John L. Strother
Endemic
Synonyms: Franseria acanthicarpa (Hooker) Coville
Treatment appears in FNA Volume 21. Treatment on page 15. Mentioned on page 11.

Annuals, 10–80+ cm. Stems erect. Leaves opposite (proximal) and alternate; petioles 5–15 (–25+) mm; blades ± deltate, 15–40 (–85+) × 12–35 (–80+) mm, 1–2-pinnately lobed, bases cuneate, ultimate margins entire or toothed, abaxial faces hispid and strigillose to sericeous, adaxial faces strigillose and glanddotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5–2 mm; involucres shallowly cupshaped (usually each with 1–5+ black nerves), 3–5 (–7) mm diam., sparsely hirsute or glabrous; florets 6–12 (–20+). Burs: bodies fusiform to obpyramidal, 3–5 mm, ± hirsutulous or glabrate, spines 8–18+, scattered, stoutly subulate (sometimes basally flattened or navicular), 2–4 (–5) mm, tips straight or uncinate. 2n = 36.


Phenology: Flowering (Apr–)Jul–Nov.
Habitat: Canyons, sandy flats, dunes
Elevation: 10–3000 m

Distribution

V21-15-distribution-map.gif

Alta., Man., Sask., Ariz., Calif., Colo., Idaho, Kans., Minn., Mo., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"glabrate" is not a number. "hirsutulous" is not a number.

... more about "Ambrosia acanthicarpa"
RDF feed
2n chromosome quantity
36 +
Abaxial face pubescence
strigillose +  and sericeous +
Adaxial face pubescence
strigillose +
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
Hooker +
Band architecture
continuous +
Band quantity
1 +
Base shape
cuneate +
Blade architecture
compound +  and simple +
Blade atypical length
4 cm40 mm <br />0.04 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
Blade atypical width
3.5 cm35 mm <br />0.035 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Blade length
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Blade shape
lobed;deltate +
Blade width
1.2 cm12 mm <br />0.012 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Body shape
fusiform;obpyramidal +
Body some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 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
Alta. +, Man. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Kans. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Okla. +, Oreg. +, S.Dak. +, Tex. +, Utah +, Wash. +  and Wyo. +
Elevation
10–3000 m +
Embryo course
straight +
Face pubescence
stipitate-glandular +, glabrate +  and hairy +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
12;20 +
Floret position
proximal +
Floret quantity
6;12 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Glomerule arrangement
singly +
Habitat
Canyons, sandy flats, dunes +
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
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Involucre position relational
surrounding +
Involucre pubescence
glabrous +  and hirsute +
Involucre shape
cup-shaped +
Lamina prominence
conspicuous +
Leaf architecture
petiolate +  and sessile +
Leaf arrangement
alternate +  and opposite +
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 +
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 some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
1 (10) +
Petal fusion
connate +
Petiole atypical some measurement
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Petiole some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Phenology
Flowering (Apr–)Jul–Nov. +
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
Fl. Bor.-Amer. +
Publication year
1833 +
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 15.xml +
Special status
Endemic +
Spine arrangement
scattered +
Spine atypical some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Spine quantity
8 (?) +  and 18 (?) +
Spine shape
subulate +
Spine some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 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 acanthicarpa +
Taxon family
Asteraceae +
Taxon name
Ambrosia acanthicarpa +
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
annual +
Whole-organism some measurement
10 cm100 mm <br />0.1 m <br /> (80 cm800 mm <br />0.8 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
3cm (150cm) +
X chromosome quantity
18 +