Page author: Don Knoke
Leucanthemum maximum
Shasta daisy
WTU specimens
Other herbaria
WTU images

Distribution: Occasionally escaping from cultivation, but usually short-lived.

Habitat: Disturbed sites, meadows, clearings.

Flowers: May - August

Conservation Status: Not of concern

Description:
General:

Herbaceous perennials, the stems 20-60 cm. tall, simple or branched above.

Leaves:

Basal leaves with petioles 50-80 mm. long, expanding into obovate to spatulate blades 50-80 mm. long and 15-25 mm. broad, the margins usually toothed; cauline leaves usually sessile, the blades lanceolate to linear, 50-120 mm. long and 8-22 mm. broad, the margins of mid-stem leaves entire on the lower part and serrate above.

Flowers:

Heads single and terminal on the stems; involucres 18-22 mm. in diameter; involucral bracts 2-3 mm. wide; rays white, 21-34, 20-30 mm. long; disk flowers yellow.

Fruits:

Achene 2-3 mm. long.

Accepted Name:
Leucanthemum maximum (Ramond) DC.
Publication: Prodr. 6: 46. 1838. 1838.

Synonyms & Misapplications:
Chrysanthemum maximum Ramond [HC]
Additional Resources:

PNW Herbaria: Specimen records of Leucanthemum maximum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Leucanthemum maximum checklist entry.

E-Flora BC: Leucanthemum maximum atlas page.

CalPhotos: Leucanthemum maximum photos.

USDA Plants: Leucanthemum maximum information.

6 photographs:
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