Erigeron glabellus

      
Smooth Fleabane

G. F. Ledingham Herbarium
University of Regina

bullet

Glabellus:  Answers to key questions in Budd's Flora and Flora of Alberta leading to this species.  
bullet

perennials, usually with short rootstocks or well developed caudex, this often woody or branching; NOT [annual, biennial or short-lived perennial plants, without rootstocks or well developed caudex]

bullet

plant without a taproot but with fibrous roots from a well developed caudex; NOT [with a taproot as well as a caudex and lacking fibrous roots]

bullet

stems often spreading or decumbent at base; NOT erect

bullet

plants usually more than 20 cm high

bullet

stems mostly less than 35 cm high

bullet

internodes NOT very numerous

bullet

internodes NOT very short

bullet

cauline leaves much reduced in size and number upwards; NOT little reduced in size and number upwards

bullet

leaves various, if linear, then the basal ones obviously longer than the cauline; leaves NOT [linear or narrowly oblong, essentially uniform from base to near top of plant, the basal ones not markedly longer than the cauline]

bullet

leaves at middle of stem NOT longer than those above and below

bullet

stem leaves usually 5-7; NOT numerous

bullet

leaves not lobed, mostly entire, sometimes toothed at apex; NOT [leaves, or some of them, more or less lobed, cleft, or coarsely toothed]

bullet

leaves NOT clasping, NOT auriculate

bullet

cauline leaves mostly linear, lanceolate or oblanceolate; NOT [lanceolate or broader]

bullet

heads 2-many, or both; NOT solitary

bullet

involucre pubescent, but NOT woolly-villose; NOT glandular

bullet

ligules usually conspicuous, well developed

bullet

ligules often over 100 to a head

bullet

ligules filiform, 1 mm wide or less; NOT over 1 mm wide

bullet

ligules over 4 mm long at maturity

bullet

ligules coloured; NOT white

bullet

ligules pink, purple, or blue; NOT yellow

bullet

long pappus bristles present on all the flowers of the head, including outer pistillate (usually ligulate) flowers

bullet

pappus double

bullet

achenes usually 2-nerved; NOT 4-7 nerved

 
bullet

Erigeron: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. The answers do not match all species of Erigeron found in the Canadian prairies, but they do match this species.
bullet

juice watery; NOT milky

bullet

plants usually with leafy stems; plants NOT low, NOT stemless, NOT tufted

bullet

leaves appearing before the flowers

bullet

leaves NOT extending beyond flowers

bullet

basal leaves NOT cordate, NOT sagittate

bullet

bracts in 1 or 2 series; NOT in several series

bullet

involucral bracts subequal or more or less imbricate, often green in part, but neither definitely leafy nor with chartaceous base and herbaceous green tip; involucral bracts NOT [either subequal and the outer leafy, or more commonly evidently imbricate, with chartaceous base and evident green tip, sometimes chartaceous throughout]

bullet

receptacle naked

bullet

flower heads with florets both tubular and ray

bullet

ray (ligulate) flowers when present, either pistillate or neutral; NOT perfect

bullet

ray florets conspicuous

bullet

ray florets 50 or more; NOT 10-50

bullet

rays white to pink, purple or blue; NOT yellow, NOT orange

bullet

stamens united to form a tube around the pistil

bullet

style branches lanceolate or broader, acute to obtuse, 0.5 mm long or less, or obsolete; styles branches NOT [lanceolate or narrower, acute or acuminate, ordinarily more than 0.5 mm long]

bullet

pappus, at least in part, of capillary bristles; pappus NOT [of scales, or awns, or flattened, chaffy bristles, or a mere crown, or none] (FOA)

bullet

pappus composed of numerous hairs; NOT absent, NOT composed of only a few hairs (BF)