Roldana hartwegii

(Bentham) H. Robinson & Brettell

Phytologia 27: 420. 1974.

Illustrated
Basionym: Senecio hartwegii Bentham Pl. Hartw., 18. 1839 (as hartwegi)
Treatment appears in FNA Volume 20. Treatment on page 621.

Stems often marked with purplish spots or striae. Leaves: petioles mostly 3–7 cm; blades (ultimate venation raised and finely reticulate) mostly 10–20 × 10–20 cm (smaller distally), bases cordate to truncate, faces sometimes initially sparsely hirsute (only bases of hairs remaining at flowering). Phyllaries mostly 4–6 mm. Ray corolla laminae mostly 3–4 × 1.5–2 mm. Disc corollas 6–8 mm, tubes usually glandular-puberulent. Cypselae (1–) 2.5 mm; pappi 4–6 mm. 2n = 60.


Phenology: Flowering late summer–fall.
Habitat: Pine-oak forests, waste places, roadsides
Elevation: 1200–1800 m

Discussion

Selected References

None.

Lower Taxa

None.

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... more about "Roldana hartwegii"
glabrate +, arachnose +  and glabrous +
glabrate +  and glabrous +
not tailed +, rounded +  and obtuse +
papillate +
rounded-truncate +
scarious +
usually ovate +  and lance-linear +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
A. Michele Funston +
(Bentham) H. Robinson & Brettell +
cordate +  and truncate +
Senecio hartwegii +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
suborbiculate;ovate or oblong +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
winged;nerved;ribbed +
yellow-orange +  and yellow +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.5mm +  and 2mm +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
fertile +  and bisexual +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Mexico +
1200–1800 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Pine-oak forests, waste places, roadsides +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate +
deltate +  and lanceovate +
dentate to pinnatifid +  and entire +
2-carpellate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering late summer–fall. +
lance-linear to linear +  and lanceolate +
unequal +  and subequal +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
Illustrated +
purplish spots +
appendaged +  and truncate +
papillate +
Compositae +
Roldana hartwegii +
species +
glandular-puberulent +
serrate +  and denticulate or entire +
100 cm1,000 mm <br />1 m <br /> (300 cm3,000 mm <br />3 m <br />) +
60 cm600 mm <br />0.6 m <br /> (100 cm1,000 mm <br />1 m <br />) +
100 cm1,000 mm <br />1 m <br /> (300 cm3,000 mm <br />3 m <br />) +