Packera tomentosa |
Packera quercetorum |
|
---|---|---|
woolly ragwort |
Oak Creek ragwort |
|
Habit | Perennials, 30–60+ cm; taprooted (caudices relatively thick, weakly ascending or erect), sometimes stoloniferous. | Perennials, 60–100+ cm; taprooted (caudices subligneous, ascending to erect). |
Stems | 1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally. |
1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils. |
Basal leaves | (and proximal cauline) petiolate; blades lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate. |
(and proximal cauline) petiolate; blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised. |
Cauline leaves | gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed). |
gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised). |
Peduncles | bracteate, sparsely to densely tomentose. |
ebracteate, glabrous. |
Ray florets | 10 or 13; corolla laminae 6–8+ mm. |
(8–)13; corolla laminae 6–10+ mm. |
Disc florets | 50–60+; corolla tubes 3.5–4 mm, limbs 3–3.5 mm. |
60–70+; corolla tubes 2–3 mm, limbs 3.5–4.5 mm. |
Phyllaries | 13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally). |
(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy). |
Calyculi | inconspicuous. |
inconspicuous. |
Heads | 10–30+ in open, corymbiform arrays (more in robust individuals). |
15–40+ in open, cymiform arrays. |
Cypselae | 1–1.5 mm, hispid; pappi 5–7 mm. |
1.5–2 mm, glabrous or ± scabrellous; pappi 5.5–6.5 mm. |
2n | = 46. |
= 92. |
Packera tomentosa |
Packera quercetorum |
|
Phenology | Flowering (Mar–)May–early Jun. | Flowering mid Apr–early Jun. |
Habitat | Open meadows, roadways, sandy or shallow soils overlying granitic outcrops | Rocky soils, open areas, scrub-oak and pinyon-pine forests, chaparral |
Elevation | 0–500 m (0–1600 ft) | 800–2200 m (2600–7200 ft) |
Distribution |
AL; AR; DE; FL; GA; LA; MD; NC; NJ; OK; SC; TX; VA
|
AZ; NM
|
Discussion | Packera tomentosa is common throughout most of its range. The basal and proximal cauline leaves are held at about 45 degrees to the stems. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Packera quercetorum is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to P. multilobata. The plants have a bluish tinge when freshly collected and are distinctive in the field. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 601. | FNA vol. 20, p. 598. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio tomentosus, Cineraria integrifolia var. minor, S. alabamensis | Senecio quercetorum, Senecio macropus |
Name authority | (Michaux) C. Jeffrey: Kew Bull. 47: 101. (1992) | (Greene) C. Jeffrey: Kew Bull. 47: 101. (1992) |
Web links |