Packera tampicana |
Packera bernardina |
|
---|---|---|
Great Plains ragwort |
San Bernardino ragwort |
|
Habit | Annuals, 20–50+ cm; taprooted (caudices ascending to erect). | Perennials, 15–30+ cm; fibrous-rooted (caudices branched, erect to suberect). |
Stems | 1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose. |
1 (per rosette, rosettes clustered), lanate-tomentose to glabrescent. |
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 obovate to broadly spatulate, 5–20+ × 10–15 mm, bases tapering, margins subentire or dentate apically (faces lanate-tomentose to glabrescent). |
Cauline leaves | gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed). |
gradually reduced (sessile; spatulate to linear, densely tomentose). |
Peduncles | bracteate, glabrous. |
bracteate, densely lanate-tomentose. |
Ray florets | 8 or 13; corolla laminae 3–7 mm. |
8 or 13; corolla laminae 8–10 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 2–2.5 mm, limbs 2–2.5 mm. |
Phyllaries | 13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous. |
13 or 21, green, 6–8 mm, lanate-tomentose, glabrate distally. |
Calyculi | inconspicuous or 0. |
0. |
Heads | 4–25+ in corymbiform arrays. |
2–8+ in compact cymiform arrays. |
Cypselae | 1–1.5 mm, hirtellous on ribs; pappi 3–5 mm. |
0.75–1 mm, glabrous or hispid on ribs; pappi 3–4 mm. |
2n | = 46. |
= 46. |
Packera tampicana |
Packera bernardina |
|
Phenology | Flowering Feb–Jun. | Flowering late May–late Jul. |
Habitat | Disturbed, wet, sandy or clay sites, roadsides, stream banks, waste areas | Dry rocky slopes, duff of pine forests |
Elevation | 0–1000 m (0–3300 ft) | 1700–2200 m (5600–7200 ft) |
Distribution |
AR; KS; LA; OK; TX; Mexico
|
CA |
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.) |
Of conservation concern. Packera bernardina is known only from the San Bernardino Mountains and has been collected most frequently from Bear Valley. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 600. | FNA vol. 20, p. 579. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio tampicanus, Senecio greggii, Senecio imparipinnatus | Senecio bernardinus, Senecio bernardinus var. sparsilobatus, Senecio ionophyllus var. bernardinus, Senecio ionophyllus var. sparsilobatus, Senecio sparsilobatus |
Name authority | (de Candolle) C. Jeffrey: Kew Bull. 47: 101. (1992) | (Greene) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) |
Web links |