Arida carnosa

(A. Gray) D. R. Morgan & R. L. Hartman

Sida 20: 1413. 2003.

Common names: Shrubby alkali tansy-aster
Basionyms: Linosyris carnosa A. Gray Smithsonian Contr. Knowl. 5(6): 80. 1853
Synonyms: Leucosyris carnosa (A. Gray) Greene Leucosyris carnosa var. intricata (A. Gray) Cronquist Machaeranthera carnosa Machaeranthera carnosa var. intricata (A. Gray) G. L. Nesom
Treatment appears in FNA Volume 20. Treatment on page 404. Mentioned on page 401, 402.

Subshrubs, 10–90 cm (bushy); rhizomes elongate. Stems 1–10+, suberect to reclining or sprawling, slender, repeatedly branched throughout, divaricately so, glabrous, glaucous. Leaves cauline; sessile; proximal blades linear, 10–20 × 2–3 mm, distal greatly reduced, scalelike, (succulent) bases tapered, margins entire, apices apiculate to spinose, faces glabrous. Heads borne singly (terminal), in diffuse, bracteate, cymiform arrays. Involucres 5–7 × 4–7 mm in flower. Phyllaries in 4–5 series, appressed or spreading, lanceolate, 2–8 mm, bases whitish to tan or tan throughout, margins entire to laciniate, apices often green, obtuse to acuminate, faces glabrous. Ray-florets 0. Disc-florets 12–25+; corollas yellow, 5–6 mm. Cypselae subcylindric, 2.5–3 mm, 7–9-nerved per face, faces sparsely sericeous; pappi whitish, setose, 4–6 mm. 2n = 10.


Phenology: Flowering Aug–Sep.
Habitat: Alkaline flats, canyons, meadows
Elevation: 100–1600 m

Distribution

V20-923-distribution-map.gif

Ariz., Calif., Nev., Mexico (Sonora)

Discussion

Arida carnosa is recognized by its subshrubby habit, glabrous, glaucous, and succulent stems, reduced scalelike leaves, and absence of ray florets. It occurs in or around alkaline salt flats, where it is associated with other salt-tolerant genera such as Sarcobatus, Distichlis, and Atriplex.

Selected References

None.

Lower Taxa

None.

... more about "Arida carnosa"
not tailed +, rounded +  and obtuse +
apiculate +  and spinose +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
cymiform +  and bracteate +
indeterminate +  and determinate +
Ronald L. Hartman +  and David J. Bogler +
(A. Gray) D. R. Morgan & R. L. Hartman +
linear +  and lanceolate oblanceolate or obovate +
whitish +  and tan or tan +
tapered +
indurate to herbaceous +
Linosyris carnosa +
compound +  and simple +
rugulose +  and muricate +
barbellulate +  and barbellate +
attenuate +
lanceolate +  and scalelike +
Shrubby alkali tansy-aster +
not 2-lipped +  and actinomorphic +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subcylindric +
fertile +  and bisexual +
fertile +  and bisexual +
equaling +
compressed +
Ariz. +, Calif. +, Nev. +  and Mexico (Sonora) +
100–1600 m +
sericeous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Alkaline flats, canyons, meadows +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;depressed-hemispheric +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
triangular +
entire +  and laciniate +
2-carpellate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering Aug–Sep. +
spreading +  and appressed +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
gland-dotted +
suberect +  and reclining or sprawling +
1 +  and 10 +
slender +
appendaged +  and truncate +
papillate +  and smooth +
Leucosyris carnosa +, Leucosyris carnosa var. intricata +, Machaeranthera carnosa +  and Machaeranthera carnosa var. intricata +
Arida carnosa +
species +
1/4-1/2 times funnelform throats +
rhizomatous +  and taprooted +
60 cm600 mm <br />0.6 m <br /> (90 cm900 mm <br />0.9 m <br />) +
perennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +