Fallugia paradoxa

(D. Don) Endlicher ex Torrey in W. H. Emory

in W. H. Emory, Not. Milit. Reconn., 139. 1848.

Illustrated
Basionym: Sieversia paradoxa D. Don Trans. Linn. Soc. London 14: 576, plate 22, figs. 7–10. 1825
Synonyms: Fallugia micrantha Cockerell F. paradoxa var. acuminata Wooton
Treatment appears in FNA Volume 9. Treatment on page 73.

Stems: long-shoot internodes 2.5–10 (–15) mm, those proximal to flowers 15–30 (–50) mm; short-shoot spurs 1–3.5 (–7) mm. Leaves: long-shoot leaf-bases 1.5–4.5 mm, short-shoot leaf-bases much reduced; stipules 1–2 mm; blade (4–) 7–18 (–30) × (0.8–) 3–12 (–23) mm, lobes 3–7, linear-lanceolate, 1–7 (–13) × 0.7–1.4 (–2.2) mm. Flowers: epicalyx bractlets leaflike, subulate to linear, 2–5 (–8) mm, margins entire or apically 2–3-toothed; hypanthium 2.5–3.5 × (4–) 5–6 (–7) mm; sepals (3.2–) 4–8 (–10) × 2.2–5 (–6.5) mm, subterminal leafy apiculations 1 (–3), terminal, linear-subulate, 1–3, 1–2.5 (–3.5) mm; petals (6–) 10–18 (–21) × (6–) 7–14 (–17) mm, ± larger in staminate flowers; staminate flower filaments 2.2–4.3 mm, anthers 0.7–1.2 mm; pistillate flower filaments 1.5–2.5 mm, anthers 0.3–0.4 mm (sterile); stigmas terminal. Achenes 2-veined; styles ± curved, 2.5–5 cm, hairs straight, spreading-ascending, white to purplish. 2n = 28.


Phenology: Flowering Apr–Oct.
Habitat: Desert scrub in sandy to rocky (rarely clay) drainages, or sandy-loamy to rocky uplands in grasslands, chaparral, pinyon-oak, juniper, or ponderosa pine woodlands
Elevation: (200–)700–2800 m

Distribution

V9 110-distribution-map.jpg

Ariz., Calif., Colo., Nev., N.Mex., Okla., Tex., Utah, Mexico (Baja California), Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Zacatecas)

Discussion

Fallugia paradoxa grows in diverse habitats, ranging from the Chihuahuan, Great Basin, and Mojave Desert scrub to woodlands. Throughout its range, plants exhibit considerable variation in underground structures, and lobing and indument of leaves, bracts, and epicalyx. In sandy drainages, it is commonly rhizomatous and colonial, especially in California. In upland sites, it is not rhizomatous. Lobing of sepal tips and epicalyx bracts shows considerable variation on individuals and to some extent regionally. Lobes are more consistently found in plants from Texas and northern Mexico.

Selected References

None.

Lower Taxa

None.
... more about "Fallugia paradoxa"
sterile +  and fertile +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
James Henrickson +  and Bruce D. Parfitt† +
(D. Don) Endlicher ex Torrey in W. H. Emory +
compound +  and simple +
opposite +  and alternate +
Sieversia paradoxa +
1.8 cm18 mm <br />0.018 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
lobed +, obovate +  and oblanceolate or linear +
0.4 cm4 mm <br />0.004 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3mm +  and 12mm +
reduced +
with reduced , paired , basal lobes +  and linear-acicular +
free +  and distinct +
reduced +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Okla. +, Tex. +, Utah +, Mexico (Baja California) +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Durango) +  and Mexico (Zacatecas) +
not +  and aggregated +
(200–)700–2800 m +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
subulate +  and linear +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hirsute +  and villose-pilose +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
pistillate +  and staminate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
unisexual +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not +  and aggregated +
fusiform +  and compressed +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Desert scrub in sandy to rocky (rarely clay) drainages, or sandy-loamy to rocky uplands in grasslands, chaparral, pinyon-oak, juniper, or ponderosa pine woodlands +
white +  and purplish +
straight +
spreading-ascending +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
simple +  and compound +
opposite +  and alternate +
persistent +  and deciduous +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
linear-lanceolate +
0.7mm +  and 1.4mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pinnate +  and entire +
2-3-toothed +  and entire +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0 (?) +  and 4 (?) +
1.4 cm14 mm <br />0.014 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
free +  and distinct +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Flowering Apr–Oct. +
adnate +, free +, connate +  and distinct +
in W. H. Emory, Not. Milit. Reconn., +
not arillate +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
persistent +
free +  and distinct +
spreading +  and ascending +
broadly ovate +  and suborbiculate +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Illustrated +
free +  and distinct +
branched +  and simple +
spreading-ascending +
1 +  and 20 +
palmate +  and pinnate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +
distinct +
elongating +
basal +, lateral +, subterminal +  and terminal +
hairy +  and glabrous +
plumose +  and filiform +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
glabrescent +, orange-lepidote +, villous +  and hirtellous +
Fallugia micrantha +  and F. paradoxa var. acuminata +
Fallugia paradoxa +
Fallugia +
species +
elongating +
inconspicuous +
ovoid-cylindric +
enlarged +