familyAsteraceae
tribeAsteraceae tribe Astereae
genusXanthisma
sectionXanthisma sect. Sideranthus
speciesXanthisma spinulosum
varietyXanthisma spinulosum var. chihuahuanum

Xanthisma spinulosum var. chihuahuanum

(B. L. Turner & R. L. Hartman) D. R. Morgan & R. L. Hartman

Sida 20: 1408. 2003.

Ronald L. Hartman
Basionym: Machaeranthera pinnatifida var. chihuahuana B. L. Turner & R. L. Hartman Wrightia 5: 311. 1976
Synonyms: Haplopappus spinulosus var. chihuahuanus (B. L. Turner & R. L. Hartman) Gandhi
Treatment appears in FNA Volume 20. Treatment on page 392. Mentioned on page 391.

Perennials, 30–50 cm, often woody at base. Stems stiffly erect, usually much branched in proximal 1/2–2/3; mid internodes 2–5 mm. Leaves numerous, concentrated in proximal ± 1/2, spreading to loosely ascending, often much reduced distally, margins of proximal pinnatifid to 2-pinnatifid, of distal coarsely dentate to ± entire, lobes linear to lanceolate, 3–5 mm, faces usually hairy, rarely glabrous, often densely stipitate-glandular. Heads 2–10+ in diffuse arrays. Peduncles relatively terminal and lateral, 0.5–2 cm. Involucres 12–15 mm wide. 2n = 8, 16.


Phenology: Flowering spring–fall.
Habitat: Clayey to rocky washes, prairies, plains, roadsides
Elevation: 1000–1800 m

Distribution

V20-891-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Sonora)

Discussion

Variety chihuahuanum is a Chihuahuan Desert taxon that extends into the southern United States.

Selected References

None.

Lower Taxa

None.
... more about "Xanthisma spinulosum var. chihuahuanum"
RDF feed
2n chromosome quantity
16 +  and 8 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex architecture
tipped +
Apex fusion
distinct +
Apex growth form or texture
herbaceous +
Apex shape
acute;acuminate +
Apex size
subequal +
Apex texture
scarious +
Apical appendage quantity
0 +
Apical appendage shape
usually triangular +  and linear +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
corymbiform +
Array density
diffuse +
Array development
indeterminate +  and determinate +
Author
Ronald L. Hartman +
Authority
(B. L. Turner & R. L. Hartman) D. R. Morgan & R. L. Hartman +
Band architecture
continuous +
Band quantity
1 +
Basal leaf life cycle
withering +
Base shape
decurrent +
Base texture
indurate +
Basionyms
Machaeranthera pinnatifida var. chihuahuana +
Blade architecture
1-nerved +
Blade length
0.2 cm2 mm <br />0.002 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Blade shape
oblong;lanceolate +
Blade size
reduced +
Blade width
0.1 cm1 mm <br />0.001 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Body architecture or pubescence or relief
smooth +
Body architecture or shape
ribbed +
Body relief
rugulose +  and muricate +
Bract architecture or shape
leaflike +
Bract quantity
0;3 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle coloration
white +
Bristle length or size
longer +
Bristle pappus duration
persistent +
Bristle pappus some measurement
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Bristle shape
Flattened (?) +
Bristle some measurement
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Calyculus presence
absent +
Caudex architecture
branched +
Caudex texture
woody +
Cauline leaf arrangement
spaced +
Corolla architecture
not 2-lipped +  and actinomorphic +
Corolla coloration
yellow +
Corolla coloration or density
red-purple +
Corolla presence
absent +
Corolla some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
6-18-ribbed +
Cypsela growth form
dimorphic +
Cypsela shape
obovoid +
Cypsela some measurement
1.8mm;2.5mm +
Disc-floret quantity
30 (150) +
Disc-floret reproduction
fertile +  and bisexual +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Disc shape
flattened +
Disc some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Distal 1/2-2/3 fragility or size
Moderately stout (Stout) +
Distribution
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Durango) +  and Mexico (Sonora) +
Elevation
1000–1800 m +
Embryo course
straight +
Face pubescence
stipitate-glandular +, glabrous +  and hairy +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
1;5 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Habitat
Clayey to rocky washes, prairies, plains, roadsides +
Head architecture
discoid +  and radiate +
Head architecture or arrangement
radiate +
Head arrangement
in corymbiform arrays +  and singly +
Head development
indeterminate +
Head quantity
2;10 +
Head reproduction
heterogamous +  and homogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Individual head architecture
each +  and sessile +
Involucre length
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric;cupulate +
Involucre width
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Lamina length
5mm;12mm +
Lamina shape
ovate +  and orbiculate or depressed-elliptic +
Lamina size
unequal +
Lamina width
1mm;2.5mm +
Leaf-blade architecture or shape
serrate +  and entire +
Leaf-blade shape
pinnatifid;deeply 2-pinnatifid +
Leaf architecture
sessile +  and short-petiolate +
Leaf arrangement
alternate +
Leaf arrangement or density
concentrated +
Leaf orientation
spreading +  and loosely ascending +
Leaf position
cauline +  and basal +
Leaf quantity
Numerous (?) +
Leaf size
reduced +
Line quantity
2 +
Lobe architecture
bristle-tipped +
Lobe atypical quantity
4 (5) +
Lobe length
Spreading (?) +
Lobe quantity
5 (?) +
Lobe shape
linear +  and lanceolate +
Lobe some measurement
? (?) +
Margin architecture or shape
entire +  and dentate +
Margin shape
pinnatifid +  and 2-pinnatifid +
Margin shape or architecture
dentate to more +
Margin texture
scarious +
Mid internode some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Nerve coloration
tawny +
Nerve pubescence
hairy +
Nerve quantity
16 (24) +
Number of lower taxa
0 +
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 +
Pappus architecture
barbellate +
Pappus coloration
tawny +
Pappus duration
persistent +
Pappus quantity
30 +  and 90 +
Pappus shape
flattened +
Pappus some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Peduncle position
lateral +
Peduncle position or structure subtype
terminal +
Peduncle pubescence
stipitate-glandular +, hairy +  and glabrous +
Peduncle some measurement
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering spring–fall. +
Phyllarie architecture
1-nerved +
Phyllarie coloration
light green +  and stramineous +
Phyllarie duration
persistent +
Phyllarie fragility
stiff +
Phyllarie fusion
distinct +
Phyllarie life cycle
falling +
Phyllarie orientation
appressed +  and squarrose +
Phyllarie position or shape
distal +
Phyllarie quantity
1/5 (1/2) +
Phyllarie shape
linear +  and linear-lanceolate +
Phyllarie size
unequal +
Phyllarie some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Phyllarie texture
Rigid (?) +
Phyllarie width
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Pit border fusion
connate +  and distinct +
Pit border some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Pit seta fusion
connate +  and distinct +
Pit seta shape
laciniate +
Pit seta some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Pit tooth fusion
connate +  and distinct +
Pit tooth shape
laciniate +
Pit tooth some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Proximal leaf quantity
1/2 +
Publication title
Sida +
Publication year
2003 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
14 (60) +
Ray-floret reproduction
fertile +
Ray corolla coloration
yellow +
Ray height or length or size
shorter +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +
Receptacle shape
flat;convex +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
5;6 +
Series size
unequal +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20 891.xml +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +
Stem orientation
erect +
Stem pubescence
stipitate-glandular +, glabrous +  and hairy +
Stem quantity
1 +  and 30 +
Strip coloration
green patch +
Strip size
expanded +
Style-branch appendage shape
lanceolate +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +  and smooth +
Synonyms
Haplopappus spinulosus var. chihuahuanus +
Taproot some measurement
2cm (18cm) +
Taxon family
Asteraceae +
Taxon name
Xanthisma spinulosum var. chihuahuanum +
Taxon parent
Xanthisma spinulosum +
Taxon rank
variety +
Tooth architecture
tipped +
Tooth pubescence
stipitate-glandular +, glabrous +  and hairy +
Tooth quantity
4 (18) +
Tube quantity
1/4 (1/3) +
Tube some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Volume
Volume 20 +
Wall architecture or shape
6-16-ribbed +
Wall fragility
weak +
Wall prominence
prominent +
Wall width
thin +
Whole-organism architecture
taprooted +
Whole-organism duration
perennial +
Whole-organism some measurement
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Whole-organism texture
woody +
Whole organism architecture
taprooted +
Whole organism growth form
subshrub +
Whole organism some measurement
10cm (100cm) +
X chromosome quantity
4 +, 3 +  and [2 +