Verbesina rothrockii |
Verbesina dissita |
|
---|---|---|
Rothrock's crownbeard |
big-leaf crownbeard, crownbeard |
|
Habit | Plants 30–60+ cm (perennating bases ± erect, internodes not winged). | Plants 50–150+ cm (perennating bases ± erect, internodes not winged). |
Leaves | all or mostly opposite (distal sometimes alternate); blades ovate-deltate or rhombic to lance-elliptic, 3–5 × 1–3 cm, bases subtruncate to cuneate, margins coarsely toothed to subentire, apices obtuse to acute, faces ± hirtellous to scabrellous. |
all or mostly opposite (distal sometimes alternate); blades ± rhombic to ovate, 5–12+ × 3–6+ cm, bases rounded to cuneate, margins coarsely toothed to subentire, apices ± acute, faces ± scabrellous. |
Involucres | ± hemispheric, 10–15+ mm diam. |
± hemispheric, 10–20+ mm diam. |
Ray florets | 8–13; laminae 15–25+ mm. |
10–13; laminae 12–25+ mm. |
Disc florets | 60–100+; corollas yellow. |
60–100+; corollas yellow. |
Phyllaries | 18–30+ in 3–4 series, ± erect, oblong to elliptic, 6–10+ mm. |
24–30+ in 2–3 series, ± erect, spatulate or oblanceolate to lanceolate, 5–12+ mm. |
Heads | borne singly. |
borne singly or (2–)5–15+ in loose, corymbiform arrays. |
Cypselae | dark brown, ± elliptic, 10 mm, faces glabrous; pappi 0–0.5 mm. |
dark brown, narrowly lance-elliptic, 8–10 mm, faces glabrous or sparsely hirtellous; pappi 3–4 mm. |
2n | = 34. |
|
Verbesina rothrockii |
Verbesina dissita |
|
Phenology | Flowering (May–)Aug–Sep. | Flowering May. |
Habitat | Rocky slopes, igneous or limestone substrates | Chaparral or coastal scrub |
Elevation | 1200–1800 m (3900–5900 ft) | 30–200 m (100–700 ft) |
Distribution |
AZ; NM; Mexico (Coahuila, Durango, Zacatecas)
|
CA; Mexico (Baja California) |
Source | FNA vol. 21, p. 111. | FNA vol. 21, p. 111. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Verbesina | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Verbesina |
Sibling taxa | ||
Name authority | B. L. Robinson & Greenman: Proc. Amer. Acad. Arts 34: 541. (1899) | A. Gray: Proc. Amer. Acad. Arts 20: 299. (1885) |
Web links |