annual agoseris
Agoseris heterophylla (Nutt.) Greene
Agoseris heterophylla, known as annual agoseris or mountain dandelion, is a herbaceous plant in the Asteraceae family. It is native to western North America, occurring in drier regions from British Columbia to Baja California, as well as parts of the southwestern U.S., Mexico, and nearby islands. The species was first described in 1891.
Description
Annual agoseris is a low-growing herb, typically 0-5 cm tall, with a single flowering stem. It has rosette leaves that are obovate or linear, 1.0-25.0 cm long, with 4-10 lateral lobes. The peduncle ranges from 3.0-60.0 cm in length and may be glabrescent or glandular. The inflorescence has 5-300 yellow ligulate flowers. Involucral bracts are green or purple, often glandular and ciliate. The achenes are fusiform to obovoid, with a beak 5.0-11.0 mm long, and a pappus 4.0-9.0 mm long. It is commonly found in arid and semi-arid habitats.
Other common names
California agoserisArizona agoserisannual agoserisannual false-dandelion
Distribution
Oregon · Montana · Baja California · Washington · Idaho · Arizona · Utah · California · Sonora · New Mexico · Guadalupe I. · Nevada · British Columbia · SE · Mexican Pacific Is. · Mexico Northwest · Sweden
Synonyms
Cryptopleura californicaTroximon heterophyllum f. turgidumTroximon heterophyllumTroximon heterophyllum f. cryptopleurumTroximon elatumAgoseris heterophylla subsp. heterophyllaTroximon heterophyllum f. heterophyllumTroximon heterophyllum var. heterophyllumTroximon heterophyllum subsp. heterophyllumAgoseris heterophylla subsp. californicaTroximon heterophyllum var. cryptopleuroidesMacrorhynchus californicusAgoseris heterophyllaMicrorhynchus heterophyllusAgoseris heterophylla var. crenulataTroximon heterophyllum var. cryptopleuraTroximon heterophyllum var. kymapleuraAgoseris heterophylla var. kymapleuraAgoseris heterophylla var. turgidaTroximon heterophyllum f. idialeTroximon heterophyllum f. crenulatumKymapleura heterophyllaAgoseris greeneanaAgoseris majorAgoseris californicaAgoseris heterophylla subsp. normalisTroximon heterophyllum var. glabratumAgoseris heterophylla var. quentiniiTroximon heterophyllum var. californicumMacrorhynchus heterophyllus
