Laënnecia sophiifolia

sophiifolia (Kunth) G. L. Nesom

Phytologia 68: 225. 1990.

Basionym: Conyza sophiifolia Kunth in A. von Humboldt et al., Nov. Gen. Sp. 4(fol.): 46. 1818; 4(qto): 72, plate 326. 1820 (as sophiaefolia)
Treatment appears in FNA Volume 20. Treatment on page 37. Mentioned on page 36.

Annuals, 10–50 (–150+) cm (sometimes branched from bases). Leaf-blades: bases obscurely, if at all, clasping, faces sparsely hirtellous to villous (at least on margins, hairs multicellular) and stipitate to sessile-glandular; proximal ovate to spatulate, 20–50+ × 10–20+ mm, mostly 1–2-pinnately lobed (lobes oblong-linear to filiform); distal similar, pinnately lobed or entire (then linear to filiform). Heads in racemiform or paniculiform arrays (on main and lateral stems). Involucres 2.5–3.5 mm. Receptacles 1.5–2 mm diam. Pistillate florets 20–40+; corollas: lengths ± 1/2 styles, laminae 0. Disc-florets 2–6. Cypselae pale pinkish tan, 0.6–0.8 mm, glabrous or sparsely strigillose (hairs 0.05–0.1 mm), sometimes glandular near apices; pappi fragile or readily falling, of 9–12 (–20) white to tawny bristles in 1 series, 2–3 mm. 2n = 18.


Phenology: Flowering late summer–early fall.
Habitat: Disturbed sites, among igneous rocks
Elevation: 1300–2100 m

Distribution

V20-39-distribution-map.gif

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

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Laënnecia sophiifolia"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and racemiform +
indeterminate +  and determinate +
John L. Strother +
sophiifolia (Kunth) G. L. Nesom +
decurrent +
Conyza sophiifolia +
compound +  and simple +
lobed;spatulate;ovate;obovate;oblong;oblanceolate +
rugulose +  and muricate +
white +  and tawny +
not 2-lipped +  and actinomorphic +
beaked +, 2-ribbed +  and 5-ribbed +
tan +  and pale pinkish +
strigillose +  and glabrous +
compressed +, oblong +  and elliptic or obovate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +, Tex. +  and Mexico +
1300–2100 m +
stipitate +  and sessile-glandular +
sparsely hirtellous +  and villous +
winged +  and beaked +
dispersed +
Disturbed sites, among igneous rocks +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.2 cm2 mm <br />0.002 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 />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
entire;lobed;lobed;ovate;spatulate +
petiolate +  and sessile +
cauline +  and basal +
spreading;erect +
deltate +
sessile-glandular +  and stipitate +
villous +, tomentose +, hirtellous +  and glabrate +
membranous +
2-carpellate +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering late summer–early fall. +
lanceolate +  and linear +
less unequal +  and subequal +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
branched +  and simple +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Laënnecia sophiifolia +
Laënnecia +
species +
entire +  and toothed +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
tree +, shrub +  and subshrub +