Thymophylla concinna (A. Gray) Strother
Family: Asteraceae
(english: Sonoran pricklyleaf, fetid marigold)
[Dyssodia concinna (A. Gray) B.L. Robins.]
Thymophylla concinna image
Sue Carnahan  
Annuals, green, 3-12+ cm, glabrous. Stems spreading to ascending or erect. Leaves alternate; blades 10-15 mm overall, lobed, lobes (3-)5-9, linear to filiform. Peduncles 1-5+ mm, glabrous. Calyculi 0, or of 1-2 subulate bractlets, lengths less than 1/2 phyllaries. Involucres obconic to campanulate, 5-6.5 mm. Phyllaries 8-16, margins of outer distinct less than 1/2 their lengths, abaxial faces glabrous. Ray florets 9-12; corollas white to pale yellow, laminae 3-4 × 1-3.5 mm. Disc florets ca. 25; corollas pale yellow, 3-4.5 mm. Cypselae 2.5-3 mm; pappi of 10-15 scales (each comprising 5-9 basally connate bristles) 1-2.5 mm. 2n = 16. Flowering spring, following rains. Sandy washes and flats, in deserts; 50-100 m; Ariz.; Mexico (Sonora).
FNA 2006, Kearney and Peebles 1969
Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Herbaceous annuals, to 12 cm tall or more, stems erect, branching from base, herbage green, glabrous. Leaves: Alternate, blades 10-15 mm overall, pinnately-lobed with 3-9 linear to filiform lobes, blades somewhat thickish and succulent-looking. Flowers: White to pale yellow with yellow centers, in radiate heads; ray flowers 9-12 with white to pale yellow laminae 3-4 mm long and 1-3.5 mm wide, disk flowers yellow, about 25 in number, corollas 3-4.5 mm long, involucres obconic to campanulate, 5-6.5 mm long, without subtending calyculi and nearly naked at the bases, phyllaries 8-16, united to three-fourths of thier lengths or more, with surfaces covered with small, conspicuous, rounded glands, infloresences generally solitary on glabrous peduncles 1-5 mm long. Fruits: Cypselae (achenes) 2.5-3 mm long. Pappi of 10-15 scales, each dissected into 5-9 basally connate bristles 1-2.5 mm long. Ecology: Found in sandy washes and on flats in desert communities, from 150-350 ft (45-106 m); flowering in spring, following rains. Distribution: Arizona; Mexico. Notes: The plump, thinly-lobed leaves of this small annual appear to stand erect along the stems, giving this plant a somewhat bristly or bottle-brushish look; the singular heads at the branch tips have fairly large white ray flowers surrounding a center of bright yellow disk flowers and the involucres have somewhat conspicuous phyllaries; other good identifiers for this species are the annual life-span, the involucre essentially naked at the base, and the phyllaries untied to three-fourths of their length or more, their surfaces with conspicuous small, roundish glands. Look for this species under Dyssodia concinna in older texts. Ethnobotany: Specific uses for this species are unknown, but other species in the genus have uses. Synonyms: Dyssodia concinna, Boeberastrum concinnum, Hymenatherum concinnum Editor: LCrumbacher2012 Etymology: Thymophylla comes from the Greek thymos, "thyme," and phyllon, "leaf," meaning "thyme-leaved", while concinna means neat, well-made, elegant.
Thymophylla concinna image
Keir Morse  
Thymophylla concinna image
Sue D. Carnahan  
Thymophylla concinna image
José Jesús Sánchez-Escalante  
Thymophylla concinna image
Keir Morse  
Thymophylla concinna image
Sue Carnahan  
Thymophylla concinna image
Sue D. Carnahan  
Thymophylla concinna image
José Jesús Sánchez-Escalante  
Thymophylla concinna image
Keir Morse  
Thymophylla concinna image
Sue Carnahan  
Thymophylla concinna image
José Jesús Sánchez-Escalante  
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image
Thymophylla concinna image