Flora of North America species comparison

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Verbesina rothrockii

Verbesina nana

Rothrock's crownbeard

dwarf crownbeard
Habit Plants 30–60+ cm (perennating bases ± erect, internodes not winged). Plants mostly 7–15+ 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 ± deltate to rhombic, 3–8+ × 2–5+ cm, bases ± cuneate, margins raggedly toothed, apices obtuse to acute, faces strigoso-sericeous.
Involucres

± hemispheric, 10–15+ mm diam.

shallowly bowl-shaped, 15–25+ mm diam.
Ray florets

8–13;

laminae 15–25+ mm.

12–16+;

laminae 10–12+ mm.
Disc florets

60–100+;

corollas yellow.

80–150+;

corollas yellow to orange.
Phyllaries

18–30+ in 3–4 series, ± erect, oblong to elliptic, 6–10+ mm.

28–35+ in 2–3 series, ± erect, linear to lanceolate, 8–12+ mm.
Heads

borne singly.

borne singly or 2–3 together.
Cypselae

dark brown, ± elliptic, 10 mm, faces glabrous;

pappi 0–0.5 mm.

blackish, ± elliptic, 6.5–8 mm, faces ± strigillose;

pappi 0.5–1+ mm.
2n

= 34.

= 68.

Verbesina rothrockii

Verbesina nana
Phenology Flowering (May–)Aug–Sep. Flowering May(–Oct).
Habitat Rocky slopes, igneous or limestone substrates Silty flats, roadsides, desert scrub
Elevation 1200–1800 m (3900–5900 ft) 1000–2000 m (3300–6600 ft)
Distribution
from FNA
AZ; NM; Mexico (Coahuila, Durango, Zacatecas)
[WildflowerSearch map]
[BONAP county map]
from FNA
NM; TX; Mexico (Coahuila)
[BONAP county map]
Source FNA vol. 21, p. 111. FNA vol. 21, p. 110.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Verbesina Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Verbesina
Sibling taxa
V. alternifolia, V. aristata, V. chapmanii, V. dissita, V. encelioides, V. helianthoides, V. heterophylla, V. lindheimeri, V. longifolia, V. microptera, V. nana, V. occidentalis, V. oreophila, V. virginica, V. walteri
V. alternifolia, V. aristata, V. chapmanii, V. dissita, V. encelioides, V. helianthoides, V. heterophylla, V. lindheimeri, V. longifolia, V. microptera, V. occidentalis, V. oreophila, V. rothrockii, V. virginica, V. walteri
Synonyms Ximenesia encelioides var. nana
Name authority B. L. Robinson & Greenman: Proc. Amer. Acad. Arts 34: 541. (1899) (A. Gray) B. L. Robinson & Greenman: Proc. Amer. Acad. Arts 34: 543. (1899)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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