Al Schneider's Rocky Mountains Plant Descriptions

Tall Fleabane
Erigeron elatior
Aster family (Asteraceae)

Tall Fleabane (Erigeron elatior) has nodding, wooly, pink-tinged flower buds and flowers with numerous very light lavender . The leaves and stems are also hairy but not nearly as hairy as the buds and underside of the flower head. The plant tends to grow in clusters making it very eye-catching. Leaves are usually light green and broader at the base than at the tapering and pointed tip.

"Elatior" is from the Latin for "tall." Charles Parry collected this Erigeron in Colorado in 1861 and Asa Gray named it Erigeron grandiflorum variety elatius in 1862. Edwin Greene gave it its present name in 1897.


© Mary Ellen (Mel) Harte, Bugwood.org

Description

, from a short (woody base of non-woody ), stems to 28" tall, often purple below, leafy throughout, spreading-hairy and above. Leaves from 1 to 4" long and 1/4 to 1" wide, the lowermost smaller than the middle ones and commonly withered at blooming time, to , , lower leaves , becoming and somewhat upward. Flowerheads 1-3. to almost an inch wide and 1/3" high, the densely wooly hairy with some red purple tinges, nearly equal in length, drawn out at the , purple, and tips. 75-150, pink or pink-purple or white from 1/2 to almost 1" long and 1/20" wide. double. a 2-, hairy .

Field Marks

Very hairy-headed, large-headed flowers atop tall hairy stems with almost triangular leaves.

© Al Schneider

nerves -- Another name for a vein.

An entire leaf has smooth edges. Not toothed or lobed.

A perennial plant lives and blooms for many years.

achene -- a type of simple dry fruit produced by many species of flowering plants. For example, a rose hip holds a few achenes.

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

reflexed -- bent sharply back or down.

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

petiolate -- a leaf that has a stem. A sessile leaf has no stem.

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

Bracts are modified leaves associated with a 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.

fruit -- any seed-bearing structure in flowering plants. It is formed from the ovary after flowering.

ovate-lanceolate -- Ovate thru lanceolate.

sessile -- attached without a stalk. For example, a leaf that clasps the stalk. A petiolate leaf has a stalk.

caudex -- The woody stem base of some herbaceous perennials.

pappus -- Small scales, bristles or hairs at the top of the seed in Asteraceae. For example, dandelion parachutes. Plural: pappi.

A clasping leaf suroundes part of all of the stem.

lanceolate -- Lance-shaped. Long, wider in the middle.