Difference between revisions of "Packera sanguisorboides"

(Rydberg) W. A. Weber & Á. Löve

Phytologia 49: 48. 1981.

Common names: Burnet ragwort
Basionym: Senecio sanguisorboides Rydberg Bull. Torrey Bot. Club 27: 170, plate 5, fig. 14. 1900
Treatment appears in FNA Volume 20. Treatment on page 598. Mentioned on page 575.
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|tribe=Asteraceae tribe Senecioneae
 
|tribe=Asteraceae tribe Senecioneae
 
|genus=Packera
 
|genus=Packera

Revision as of 20:25, 16 December 2019

Perennials or biennials, 30–50+ cm; ± fibrous-rooted (bases creeping, ascending to erect). Stems 1 or 2–3, clustered, glabrous or leaf axils tomentose. Basal leaves (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; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate). Heads 3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each). Peduncles inconspicuously bracteate, glabrous or tomentose proximally. Calyculi inconspicuous. Phyllaries 13, bright green (tips light green to yellow), 4–7 mm, glabrous. Ray florets 8; corolla laminae 6–12 mm. Disc florets 35–50+; corolla tubes 2.5–3.5 mm, limbs 2–3 mm. Cypselae 1.5–2 mm, glabrous; pappi 4.5–5.5 mm. 2n = 46.


Phenology: Flowering late Jul–mid Sep.
Habitat: Damp, open meadows, spruce-aspen forests
Elevation: 2700–3700 m

Discussion

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.

Selected References

None.

Lower Taxa

None.