Al Schneider's Rocky Mountains Plant Descriptions

Subalpine Fleabane
Erigeron glacialis
Aster family (Asteraceae)

fleabane is very visible when high-elevation bloom. It's often seen in rich displays with paintbrush and arnica in moist and along streams. fleabane is sometimes mistaken for leafy aster (Symphyotrichum foliaceum), also common in these habitats. One can differentiate between the two species by examining the small, leaf-like surrounding each flower head. The of fleabane are sticky-feeling due to the presence of tiny hairs. Leafy aster usually has more than one head per stem and does not have . Almost all Erigerons have very narrow , typically about 1 ; those of E. glacialis are about 2 millimeters.


©2013 Susan McDougall, Trees Live Here.

Description

growing from short, fibrous . Stems grow up to 27" tall and bear solitary, showy, purple and yellow flower heads. The leaves are highly variable, ranging from elongated to spoon-shaped in outline. are largest (up to 8"), gradually becoming smaller toward the top of the stem. Flower heads are about 1" wide with purple along the perimeter and yellow flowers clustered in the center of each head. The leaf-like surrounding each flower head are dotted with tiny hairs and and feel slightly sticky.

Field Marks

Purple and yellow, sunflower-shaped flower heads produced singly at the tops of leafy stems; small, leaf-like dotted with sticky, hair.

© Al Schneider

meadow -- Large grass and wildflower filled area with few, if any, trees.

mm -- millimeter. About 1/25th of an inch.

A herb is a plant whose stems die back to the ground in the winter.

subalpine -- Just below the timberline.

ray flowers -- The outer petals of a sunflower or daisy are ray flowers.

Bracts are modified leaves associated with a flower.

Involucre is the name given to the circle or spiral collection of bracts around a flower-cluster.

disc flowers are those in the center of a sunflower or daisy. Not a ray flower.

Glands are plant structures that secrete liquids, salts or other substances. Glands often appear as hairs with a drop of liquid at the end.

basal leaves -- a leaf that grows lowest on the stem of a plant.

rhizome -- root-like stems that may either grow horizontally at the soil surface or in other orientations underground.

A perennial plant lives and blooms for many years.