Flora of North America species comparison

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Eucephalus gormanii

Eucephalus vialis

Gorman's aster

wayside aster
Habit Perennials, 10–40 cm (caudices woody or rhizomes short-creeping; herbage sparsely to moderately glandular-hairy, not glaucous). Perennials, 60–120 cm (caudices stout).
Stems

ascending to erect, sparsely to moderately glandular-hairy.

erect, pilose to glandular-pubescent.
Leaves

mid and distal blades lance-ovate to elliptic, 1.5–3 cm × 4–10 mm.

middle and distal cauline blades lanceolate-elliptic, 5–9 cm × 15–30 mm, abaxial faces usually glabrous, sometimes sparsely pubescent, adaxial faces glandular-pubescent.
Peduncles

glandular.

stipitate-glandular.
Involucres

turbinate, 6–8 mm.

turbinate, 8–10 mm.
Ray florets

0.
Phyllaries

in 2–4 series (whitish), lanceolate to ovate (unequal), apices acute, abaxial face glabrous or glandular-hairy.

in 3–6 series (sometimes reddish at margins and apices), linear to linear-oblong (strongly unequal), apices acute to acuminate, abaxial faces stipitate-glandular.
Heads

usually 2–5 in racemiform to corymbiform arrays, sometimes borne singly.

5–50(–120) in racemiform to paniculiform arrays.
Cypselae

pilose;

pappus bristles in 2 series smooth or ± barbellate.

pilose;

pappus bristles in 2 series, smooth or ± barbellate.
Rays

(5–)8–13, white (often pinkish in bud).

2n

= 18.

Eucephalus gormanii

Eucephalus vialis
Phenology Flowering Jul–Aug. Flowering Jul.
Habitat Open rocky slopes and exposed cliffs Dry open oak or coniferous woods
Elevation 1200–1900 m (3900–6200 ft) 200–500 m (700–1600 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
OR
[BONAP county map]
Discussion

Eucephalus gormanii is known only from the central Cascade Mountains. It is closely related to E. paucicapitatus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Eucephalus vialis is only known from Lane and Douglas counties. It is considered threatened. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 41. FNA vol. 20, p. 42.
Parent taxa Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus
Synonyms Aster gormanii Aster vialis
Name authority Piper: Proc. Biol. Soc. Wash. 29: 101. (1916) Bradshaw: Torreya 20: 122. (1921)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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