Picradeniopsis oppositifolia |
Picradeniopsis woodhousei |
|
---|---|---|
oppositeleaf bahia, plains bahia |
Woodhouse's bahia, Woodhouse's false bahia |
|
Habit | Plants ± erect or spreading, 3–15(–20+) cm. | Plants ± erect, 3–15(–18+) cm. |
Leaf | lobes lanceolate to linear, 10–25+ × 1–3(–8) mm, faces ± canescent-scabrellous and gland-dotted. |
lobes narrowly lanceolate to linear, 8–20+ × 1–2(–5) mm, faces sparsely scabrellous and gland-dotted. |
Involucres | broadly turbinate to hemispheric, 5–6+ × 6–9+ mm. |
± turbinate or obconic to hemispheric, 5–6+ × 4–6+ mm. |
Ray florets | 3–5(–6); corollas pale yellow, laminae 3–5 mm. |
3–8; corollas pale yellow (sometimes ochroleucous), laminae 2–5 mm. |
Disc florets | 30–60+; corollas 3.5–5 mm. |
20–35+; corollas 3–3.5 mm. |
Cypselae | 3–5 mm, usually gland-dotted, seldom hirsutulous; pappus scales usually ovate or elliptic to obovate, sometimes lanceolate, 0.5–1.5 mm. |
3–4 mm, seldom gland-dotted, usually hirsutulous (at least at bases); pappus scales usually lanceolate to linear-subulate, 0.8–1.2(–2) mm. |
2n | = 48. |
= 24. |
Picradeniopsis oppositifolia |
Picradeniopsis woodhousei |
|
Phenology | Flowering Jun–Oct. | Flowering May–Sep. |
Habitat | Roadsides, saline flats, shale sites | Roadsides, etc., on sandy, silty, or loamy soils of grasslands, plains, or prairies |
Elevation | 900–2500 m (3000–8200 ft) | 1000–1700 m (3300–5600 ft) |
Distribution |
AZ; CO; KS; MT; ND; NE; NM; OK; SD; TX; WY
|
AZ; CO; KS; NM; OK; TX
|
Source | FNA vol. 21, p. 385. | FNA vol. 21, p. 385. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Picradeniopsis | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Picradeniopsis |
Sibling taxa | ||
Synonyms | Trichophyllum oppositifolium, Bahia oppositifolia | Achyropappus woodhousei, Bahia woodhousei |
Name authority | (Nuttall) Rydberg: in N. L. Britton, Man. Fl. N. States, 1008. (1901) | (A. Gray) Rydberg: Bull. Torrey Bot. Club 37: 333. (1910) |
Web links |