Flora of North America species comparison

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Acourtia thurberi

Thurber's desertpeony
Habit Plants 40–150 cm (stems sulcate to striate distally, densely glandular).
Leaves

cauline and/or basal;

sessile;

blades ovate to ovate-elliptic, 1.5 (cauline)–18 (basal) cm, bases shortly sagittate or clasping, margins acerose-denticulate, faces densely glandular-puberulent.
Involucres

obconic to campanulate, 7–9 mm.
Receptacles

alveolate, glandular.
Florets

3–6;

corollas lavender-pink (purple), 7–12 mm.
Phyllaries

in 2–3 series, oblong-oblanceolate, apices acuminate, abaxial faces densely glandular-hairy.
Heads

in subcongested corymbiform arrays.
Cypselae

subcylindric to subfusiform, 3–7 mm, glandular;

pappi bright white, 8–9 mm (rigid).
2n

= 54.

Acourtia thurberi
Phenology Flowering Oct–Nov.
Habitat Gravel and caliche soils in warm Sonoran desert scrub
Elevation 100–200 m (300–700 ft)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Durango, Sonora)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 19, p. 74.
Parent taxa Asteraceae > tribe Mutisieae > Acourtia
Sibling taxa
A. microcephala, A. nana, A. runcinata, A. wrightii
Synonyms Perezia thurberi
Name authority (A. Gray) Reveal & R. M. King: Phytologia 27: 231. (1973)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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