Flora of North America species comparison

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Canadanthus modestus

aster modeste, few-flower aster, giant mountain aster, great northern or western bog aster, great northern-aster
Habit Plants openly colonial; rhizomes 1–3+ from base of each stem, herbaceous, ± woody with age.
Stems

1, often glabrate proximally to ± villous, distally stipitate-glandular.
Leaves

proximal scalelike, withering by flowering;

blades (16–)50–130 × (4–)10–30(–40) mm, reduced distally, thin, bases auriculate-clasping, margins ± scabrous to (distal) stipitate-glandular.
Peduncles

sometimes villous, densely stipitate-glandular;

bracts 1–2(–3), linear-lanceolate, stipitate-glandular.
Ray floret

laminae 7–11(–15) × 0.8–1.2 mm.
Disc floret

corollas 5–7 mm, glabrous, lobes 0.5–0.7 mm.
Phyllaries

squarrose, innermost appressed, apices often ± purplish, acuminate.
Heads

(1–)2–40+.
Cypselae

stramineous, stipitate;

pappi surpassing or ± equaling disc corollas.
2n

= 18.

Canadanthus modestus
Phenology Flowering late summer–early fall.
Habitat Cold, wet soils, often ± calcareous, moist woodlands, often along streams, lake shores, alder thickets, open fields, cedar swamps, in montane and boreal forests
Elevation 0–1300+ m (0–4300+ ft)
Distribution
from FNA
AK; ID; MI; MN; MT; ND; OR; WA; AB; BC; MB; NB; ON; QC; SK; YT
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 20, p. 459.
Parent taxa Asteraceae > tribe Astereae > Canadanthus
Synonyms Aster modestus, Aster major, Aster modestus var. major, Aster sayianus, Aster unalaschensis var. major, Weberaster modestus
Name authority (Lindley) G. L. Nesom: Phytologia 77: 251. (1995)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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