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Portugese daisy, Portuguese daisy

Habit Perennials, 30–120(–200+) cm.
Stems

simple or distally branched.

Basal leaves

petioles 30–60+ mm, expanding into lanceolate blades 50–100+ × 15–30+ mm, margins not lobed, usually toothed, sometimes entire.

Cauline leaves

± petiolate or sessile;

blades elliptic to oblanceolate, 30–120+ × 12–25(–35+) mm, margins of mid-stem leaves usually entire proximally, regularly serrate distally.

Involucres

(18–)25–35 mm diam.

Ray florets

21–34+;

laminae 20–25(–35) mm.

Phyllaries

(the larger) 3–5 mm wide.

Ray cypselae

3–4 mm, apices usually auriculate adaxially.

2n

= 198.

Leucanthemum lacustre

Phenology Flowering spring–summer.
Habitat Disturbed places, meadows, seeps, clearings
Elevation 0–50 m (0–200 ft)
Distribution
from FNA
CA; Europe (Portugal) [Introduced in North America]
[BONAP county map]
Source FNA vol. 19, p. 559.
Parent taxa Asteraceae > tribe Anthemideae > Leucanthemum
Sibling taxa
L. maximum, L. vulgare
Synonyms Chrysanthemum lacustre
Name authority (Brotero) Sampaio: Lista Espécies Herb. Português, 132. (1913)
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