Canadanthus

Canadanthus modestus

Canadanthus is a North American genus of flowering plant in the daisy family. The only known species is Canadanthus modestus, native to northern North America. Canadanthus modestus is an herbaceous perennial spreading by means of underground rhizomes, thus producing large colonies. It has several flower heads, each with pink or purple ray florets and white or yellow disc florets.
Canadanthus modestus (Modest Aster) In a low spot at the head of a trail through a restored fen. Also abundantly present in the fen. Canadanthus modestus is similar in appearance to Symphyotrichum novae-angliae (New England Aster) but differs from the latter by flowering stems, phyllaries, and bracts densely glandular-hairy (Symphyotrichum novae-angliae has glandular hairs and non-glandular hairs mixed) and sessile leaves that do not have auricles (small projections) that wrap around the stem. In Minnesota, Michigan, and Wisconsin habitat preferences also differ with Canadanthus modestus preferring cool wet habitats and Symphyotrichum novae-angliae usually found in warmer areas in moist soil. In other parts of its range it occurs in moist, well-drained woods and clearings and roadsides. https://www.jungledragon.com/image/84712/canadanthus_modestus_modest_aster.html Asteraceae,Canadanthus,Canadanthus modestus,Geotagged,Modest Aster,Summer,United States,aster,fen,wetland

Appearance

Distinguishing characteristics: Distinguished from Symphyotrichum novae-angliae (New England aster) by its stalkless (vs. clasping) leaves, solitary stems and green involucres.
Flower characteristics: Heads few to many; ray flowers purple 7 to 15 mm long; disk flowers yellow, 5 to 7 mm long; involucres green 7 to 11 mm long.
Fruit characteristics: Achenes hairy with prominent rib-like veins.
Leaf characteristics: Alternate, lanceolate, sessile (stalkless) and sparsely toothed, becoming smaller toward the top of the stem.
Canadanthus modestus (Modest Aster) Flowerhead and stem of Canadanthus modestus showing glandular hairs. https://www.jungledragon.com/image/84713/canadanthus_modestus_modest_aster.html Asteraceae,Canadanthus,Canadanthus modestus,Geotagged,Modest Aster,Summer,United States,aster,fen,wetland

Naming

Canadanthus modestus (Lindl.) G.L.Nesom
Aster modestus var. major Muenscher
Aster sayianus Nutt.
Aster majus Porter
Aster mutatus Torr. & A.Gray
Weberaster modestus Á.Löve & D.Löve
Aster major Porter
Aster unalaschkensis'' var. major Hook.

Status

Wisconsin Special Concern plant
Michigan Critically imperiled
Saskatchewan threatened

References:

Some text fragments are auto parsed from Wikipedia.

https://dnr.wi.gov/topic/EndangeredResources/Plants.asp?mode=detail&SpecCode=PDASTEK010
https://mnfi.anr.msu.edu/species/description/13433/Canadanthus-modestus
http://www.usask.ca/biology/rareplants_sk/root/htm/en/plants-description/canadanthus-modestus/r-canadanthus-modestus.php
Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderAsterales
FamilyAsteraceae
GenusCanadanthus
SpeciesC. modestus
Photographed in
United States of America