Psilactis brevilingulata

Schultz-Bipontinus ex Hemsley

Diagn. Pl. Nov. Mexic. 2: 34. 1879.

Synonyms: Aster brevilingulatus (Schultz-Bipontinus ex Hemsley) McVaugh Machaeranthera brevilingulata (Schultz-Bipontinus ex Hemsley) B. L. Turner & D. B. Horne
Treatment appears in FNA Volume 20. Treatment on page 463. Mentioned on page 462.

Annuals, 15–75 cm. Stems and branches stipitate-glandular, more densely distally, often also with appressed or erect hairs. Distal leaf-blades sessile, lanceolate to linear-lanceolate, smallest 2–10 × 0.5–1.5 mm. Involucres broadly turbinate to hemispheric, 2–4 mm. Phyllaries lanceolate to linear, slightly unequal, 1.5–3.5 × 0.2–0.6 mm, bases indurate, margins scarious. Receptacles flat to convex, 1.5–2.5 mm diam. Ray-florets 15–40; laminae 1–4 × 0.2–0.5 mm. Disc-florets 15–35; corollas 1.5–2.5 mm. Ray cypselae 1–1.5 mm, moderately appressed-hairy. Disc cypselae 1.3–2 mm, moderately appressed-hairy; pappi 20–25, 2–2.5 mm. 2n = 18 (Mexico).


Phenology: Flowering May–Oct.
Habitat: Fields, roadsides, stream banks, open areas in oak and pine-oak woodlands
Elevation: 1300–2100 m

Distribution

V20-1068-distribution-map.gif

Ariz., N.Mex., Tex., Mexico, South America (Colombia), South America (Peru)

Discussion

In the flora area, Psilactis brevilingulata occurs in the Chihuahuan Desert regions of southeastern Arizona, southwestern New Mexico, and western Texas.

Selected References

None.

Lower Taxa

None.

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

... more about "Psilactis brevilingulata"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
David R. Morgan +
Schultz-Bipontinus ex Hemsley +
obovate +  and linear-oblanceolate +
decurrent +
indurate +
compound +  and simple +
rugulose +  and muricate +
stipitate-glandular +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
yellow +, white +  and blue or purple +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, fusiform +  and clavate or obovoid +
fertile +  and bisexual +
white;tawny +
appressed-hairy +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +
fertile +  and bisexual +
unequal +
ovate;lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
lanceolate;linear-lanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Ariz. +, N.Mex. +, Tex. +, Mexico +, South America (Colombia) +  and South America (Peru) +
1300–2100 m +
appressed-hairy +  and stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Fields, roadsides, stream banks, open areas in oak and pine-oak woodlands +
erect +  and appressed +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
broadly turbinate;hemispheric +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2mm;0.5mm +
cauline +  and basal +
deltate +  and lanceolate +
lobed +, toothed +  and entire +
2-carpellate +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Flowering May–Oct. +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
lanceolate +  and linear +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
obovate +  and linear-oblanceolate +
Diagn. Pl. Nov. Mexic. +
appressed-hairy +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
bearing subulate enations +, hairy +  and bristly +
pitted +  and verrucose +
flat;convex +
exalbuminous +
ascending +  and erect +
stipitate-glandular +
appendaged +  and truncate +
papillate +  and smooth +
Aster brevilingulatus +  and Machaeranthera brevilingulata +
Psilactis brevilingulata +
Psilactis +
species +
15 cm150 mm <br />0.15 m <br /> (75 cm750 mm <br />0.75 m <br />) +
tree +, shrub +  and subshrub +
9 +, 4 +  and 3 +