Agoseris glauca

Agoseris glauca
File:Agoseris glauca 8503.jpg
Mount Rainier National Park
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Cichorioideae
Tribe:	Cichorieae
Genus:	Agoseris
Species:	A. glauca
Binomial name
Agoseris glauca (Pursh) Raf.
Synonyms
Synonymy Agoseris agrestis Osterh. Agoseris altissima Rydb. Agoseris apiculata Greene Agoseris aspera (Rydb.) Rydb. Agoseris dasycarpa Greene Agoseris eisenhoweri B.Boivin Agoseris isomeris Greene Agoseris lacera Greene Agoseris lanulosa Greene Agoseris lapathifolia Greene Agoseris longissima Greene Agoseris longula Greene Agoseris maculata Rydb. Agoseris microdonta Greene Agoseris procera Greene Agoseris pubescens Rydb. Agoseris pumila (Nutt.) Rydb. Agoseris scorzonerifolia (Schrad.) Greene Agoseris turbinata Rydb. Agoseris vestita Greene Agoseris vicinalis Greene Agoseris villosa Rydb. Ammogeton scorzonerifolius Schrad. Microrhynchus glaucus (Pursh) D.C.Eaton Tragopogon glaucus (Pursh) Steud. Troximon glaucum Pursh Troximon pubescens (Rydb.) A.Nelson Troximon pumilum Nutt. Troximon villosum (Rydb.) A.Nelson

Agoseris glauca is a North American species of flowering plants in the daisy family known by the common names pale agoseris, prairie agoseris, and short-beaked agoseris.

The plant is native to western and northwestern North America from Alaska east to the Northwest Territories and Ontario, south to California, Arizona, and New Mexico. It grows in many habitat types.

Description

Agoseris glauca is a perennial herb which varies in general appearance. It produces a basal patch of leaves of various shapes which may be as long as the plant is high.

There is no stem but the plant flowers in a stemlike inflorescence which is sometimes erect, reaching heights near half a meter or taller. The flower head is one to three centimeters wide with layers of pointed phyllaries. The head is ligulate, bearing many yellow ray florets but no disc florets.

The fruit is an achene with a body up to a centimeter long and a pappus which may be almost 2 centimeters in length.

Varieties

• Agoseris glauca var. dasycephala (Torr. & A. Gray) Jeps.
• Agoseris glauca var. glauca

External links

• Jepson Manual Treatment — Agoseris glauca
• USDA Plants Profile for Agoseris glauca
• USGS NPWRC Profile
• Agoseris glauca — Calphotos Photo gallery, University of California