Leucophyllum minus

A. Gray in W. H. Emory

Rep. U.S. Mex. Bound. 2(1): 115. 1859.

Common names: Big Bend barometer-bush or silver-leaf
Treatment appears in FNA Volume 17. Treatment on page 333.
Revision as of 19:04, 29 July 2020 by imported>Volume Importer
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Shrubs erect, intricately branched, compact, 2–8 (–15) dm, often appearing thorny. Young stems densely and evenly silvery stellate, hairs closely and tightly appressed, overlapping, appearing stellate, actually compressed-dendritic with radii extending from multiple levels, typically with one series of radii at tip. Leaves alternate, crowded in axillary fascicles or on compressed lateral shoots; petiole (0.5–) 1–3 (–4) mm; blade oblanceolate or spatulate to obovate-orbiculate, (2–) 3–10 (–16) mm, base cuneate-attenuate, surfaces equally silvery gray, hairs stellate, closely and tightly appressed, overlapping. Flowers: calyx lobes linear to oblong-lanceolate, (2–) 3–4.5 mm; corolla lavender to purple or blue, rarely white, campanulate, (12–) 18–25 mm, abruptly ampliate distal to narrow tube. 2n = 34.


Phenology: Flowering (May–)Jun–Aug(–Nov).
Habitat: Limestone ridges, slopes, and ledges, gravel, clayey, sandy hills, gravelly washes.
Elevation: 900–1700 m.

Distribution

N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila)

Discussion

In Texas, Leucophyllum minus is known from the Big Bend region westward through the Trans-Pecos.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Leucophyllum minus"
funnelform-campanulate +
slightly smaller +
James Henrickson +  and Guy L. Nesom +
A. Gray in W. H. Emory +
cuneate-attenuate +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
spatulate;obovate-orbiculate +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not +, leathery +  and fleshy +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
linear +  and oblong-lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
campanulate +
alternate;opposite or subopposite +
Big Bend barometer-bush or silver-leaf +
bilabiate +, regular +  and symmetric +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
white +, lavender +  and purple or blue +
campanulate +
ampliate +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
N.Mex. +, Tex. +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
900–1700 m. +
curved +  and straight +
not +  and abundant +
pilose +  and glabrous +
loculicidal +  and septicidal +
Limestone ridges, slopes, and ledges, gravel, clayey, sandy hills, gravelly washes. +
overlapping +
glabrescent +
conic;cylindric +
crowded +  and alternate +
persistent +
cauline +  and basal +
linear +  and oblong-lanceolate or oblong +
slightly smaller +
not leathery +  and not fleshy +
tenuinucellate +, unitegmic +  and hemitropous +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering (May–)Jun–Aug(–Nov). +
Rep. U.S. Mex. Bound. +
compressed-dendritic +
yellowish-brown +
connate +  and distinct +
1/4 +  and 1/3 +
silvery-gray-tomentose +
silvery gray +
Leucophyllum minus +
Leucophyllum +
species +
thorny +  and branched +
perennial +, biennial +  and annual +