Pyrrhopappus pauciflorus
Pyrrhopappus pauciflorus (D.Don) DC.
Pyrrhopappus pauciflorus, or smallflower desert-chicory, is a member of the Asteraceae family. It is native to the southern United States and northern Mexico. This weedy annual is commonly found in prairies, clay soils, and disturbed areas like fields and sidewalks. The plant grows between 5-40 cm tall and has lobed leaves and yellow flower heads. Its cypselae are reddish brown with long beaks, and it has a chromosome count of 2n = 12.
Description
Pyrrhopappus pauciflorus is an annual plant (sometimes persisting) with stems that branch from the base or upper parts. The leaves are usually oblanceolate to lanceolate with pinnately lobed or dentate margins. The flower heads are arranged in loose, corymbiform arrays, with 50-60 florets. The involucre is campanulate to cylindrical, 16-22 mm long, with 13-21 phyllaries. The calyculi consist of 8-13 deltate to subulate bractlets. The cypselae have reddish brown bodies, 4-5 mm long, with beaks of 7-9 mm and pappi of 7-9 mm. It is found in Arizona, New Mexico, Texas, and several Mexican states.
Distribution
Arizona · Puebla · Nuevo León · México State · San Luis Potosí · Chihuahua · Durango · Sonora · Jalisco · New Mexico · Coahuila · Tamaulipas · Texas · Mexico Central · Mexico Northeast · Mexico Northwest · Mexico Southwest
Synonyms
Chondrilla intybaceaPyrrhopappus geiseriPyrrhopappus multicaulisChondrilla paucifloraSitilias sessaeanaPyrrhopappus multicaulis var. multicaulisSitilias multicaulisChondrilla sessaeanaPyrrhopappus sessaeanusSitilias pauciflora
