Diagnostic ²

"Annual herbs; stem glabrescent. Leaves 2.5-5.5 x 2-3.5 cm, ovate or ovate-oblong, base cuneate, sometimes oblique, apex acute or subobtuse, pubescent on both surfaces, 3-nerved from base; petiole to 1 cm long. Heads 6-12-flowered, axillary, homogamous, non-rayed; peduncle 0.2-1 cm long, erect at first, becomes curved in fruit. Involucral bracts in 2 series, outer leafy, 5-8 x 2-3 mm. Flowers bisexual. Corolla yellow, tubular, 3-4 mm long, 5-lobed. Anthers sagittate at base. Achenes 3-3.5 mm long, obovoid, slightly angled, tubercled, finely pubescent."

Sources and Credits

1. (c) 106611639464075912591, some rights reserved (CC BY-NC-SA), uploaded by 106611639464075912591, https://picasaweb.google.com/106611639464075912591/MyFlowerAndPlantPictures6#6052736340598290738
2. (c) India Biodiversity Portal, some rights reserved (CC BY), http://eol.org/data_objects/26340341

More Info

• iNat taxon page
• Atlas of Living Australia
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Catalogo de Plantas y Líquenes de Colombia
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• NatureServe Explorer 2.0
• SEINet Symbiota portals
• Tropicos
• World Flora Online

iNat Map