Flourensia cernua

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 593. 1836.

Common names: Tarbush
Illustrated
Treatment appears in FNA Volume 21. Treatment on page 118.

Shrubs to 100 (–200) cm. Leaf-blades elliptic to ovate, 10–25 (–40+) × 4–15 (–20) mm (margins sometimes undulate). Ray-florets 0. Disc-florets 10–25 (–40); corollas 3–4 mm. Cypselae 4–6.5 mm; pappi 2.5–3.5 mm. 2n = 36.


Phenology: Flowering mostly Sep–Nov.
Habitat: Limestone or alkaline or clay soils, gravelly sites, desert scrub
Elevation: 800–2000+ m

Distribution

V21-287-distribution-map.gif

Ariz., N.Mex., Tex., Mexico

Discussion

Plants of Flourensia cernua usually have a tarry odor and are often locally co-dominant with Larrea tridentata throughout much of the Chihuahuan Desert.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Flourensia cernua"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
bristlelike +
coroniform +
rounded +  and cuneate +
mostly elliptic;lance-oblong or ovate +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Tarbush +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
hairy +  and glabrous +
less compressed or flattened oblong +  and oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +, Tex. +  and Mexico +
800–2000+ m +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Limestone or alkaline or clay soils, gravelly sites, desert scrub +
in more or less spiciform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate;hemispheric +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elliptic;ovate +
deltate +
2-carpellate +
persistent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Flowering mostly Sep–Nov. +
12 +  and 40 +
unequal +  and subequal +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
styliferous +  and neuter +
bearing subulate enations +, hairy +  and bristly +
flat;conic-ovoid +
subulate +
exalbuminous +
Illustrated +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Flourensia cernua +
Flourensia +
species +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
perennial +  and annual +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +