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Great Plains ragwort

burnet ragwort

Habit Annuals, 20–50+ cm; taprooted (caudices ascending to erect). Perennials or biennials, 30–50+ cm; ± fibrous-rooted (bases creeping, ascending to erect).
Stems

1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose.

1 or 2–3, clustered, glabrous or leaf axils tomentose.

Basal leaves

(and proximal cauline) petiolate;

blades oblanceolate to spatulate (usually pinnately lobed, lateral lobes 1–6+ pairs, their bases petioluliform, terminal lobes usually larger than laterals, often reniform to ± orbiculate, midribs sometimes ± winged and/or toothed between the primary lobes), 40–120+ × 10–30+ mm, bases ± cuneate, ultimate margins subentire or irregularly crenate, dentate, or lobed.

(and proximal cauline) petiolate;

blades broadly oblanceolate (pinnately lobed, lateral lobes 2–3+ pairs, their bases petioluliform, terminal lobes larger than laterals, ovate to reniform, midribs not winged), 60–120+ × 20–60 mm, bases contracted, ultimate margins crenate to crenate-dentate.

Cauline leaves

gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed).

gradually reduced (petiolate or sessile; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate).

Peduncles

bracteate, glabrous.

inconspicuously bracteate, glabrous or tomentose proximally.

Ray florets

8 or 13;

corolla laminae 3–7 mm.

8;

corolla laminae 6–12 mm.

Disc florets

30–45(–100+);

corolla tubes 1.5–2.5 mm, limbs (1.5–)2.5–3.5 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 2–3 mm.

Phyllaries

13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous.

13, bright green (tips light green to yellow), 4–7 mm, glabrous.

Calyculi

inconspicuous or 0.

inconspicuous.

Heads

4–25+ in corymbiform arrays.

3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each).

Cypselae

1–1.5 mm, hirtellous on ribs;

pappi 3–5 mm.

1.5–2 mm, glabrous;

pappi 4.5–5.5 mm.

2n

= 46.

= 46.

Packera tampicana

Packera sanguisorboides

Phenology Flowering Feb–Jun. Flowering late Jul–mid Sep.
Habitat Disturbed, wet, sandy or clay sites, roadsides, stream banks, waste areas Damp, open meadows, spruce-aspen forests
Elevation 0–1000 m (0–3300 ft) 2700–3700 m (8900–12100 ft)
Distribution
from FNA
AR; KS; LA; OK; TX; Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
NM
[WildflowerSearch map]
[BONAP county map]
Discussion

Packera tampicana is fairly widespread along the Gulf Coastal Plain and north and in Mexico. Morphologically, P. tampicana most closely resembles P. glabella; the former grows in very wet, sandy or clay soils and open sunlight, the latter grows in drier habitats, usually in partial shade.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Packera sanguisorboides is known from the San Juan and Sangre de Cristo mountains of northern New Mexico, the Magdalena Mountains of western New Mexico, and the Sacramento Mountains of southern Lincoln and Otero counties. It may have affinities with P. coahuilensis Greenman.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 600. FNA vol. 20, p. 598.
Parent taxa Asteraceae > tribe Senecioneae > Packera Asteraceae > tribe Senecioneae > Packera
Sibling taxa
P. anonyma, P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. breweri, P. cana, P. cardamine, P. castoreus, P. clevelandii, P. contermina, P. crocata, P. cymbalaria, P. cynthioides, P. debilis, P. dimorphophylla, P. eurycephala, P. fendleri, P. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, P. ionophylla, P. layneae, P. macounii, P. malmstenii, P. millefolium, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. quercetorum, P. sanguisorboides, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
P. anonyma, P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. breweri, P. cana, P. cardamine, P. castoreus, P. clevelandii, P. contermina, P. crocata, P. cymbalaria, P. cynthioides, P. debilis, P. dimorphophylla, P. eurycephala, P. fendleri, P. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, P. ionophylla, P. layneae, P. macounii, P. malmstenii, P. millefolium, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. quercetorum, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
Synonyms Senecio tampicanus, Senecio greggii, Senecio imparipinnatus Senecio sanguisorboides
Name authority (de Candolle) C. Jeffrey: Kew Bull. 47: 101. (1992) (Rydberg) W. A. Weber & Á. Löve: Phytologia 49: 48. (1981)
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