Leucanthemum maximum

(Ramond) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 46. 1838.

Common names: Shasta daisy
Introduced
Basionym: Chrysanthemum maximum Ramond Bull. Sci. Soc. Philom. Paris 2: 140. 1800
Treatment appears in FNA Volume 19. Treatment on page 558. Mentioned on page 559.
Revision as of 19:54, 29 July 2020 by imported>Volume Importer
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Perennials, 20–60 (–80+) cm. Stems simple or distally branched. Basal leaves: petioles 50–80 (–200+) mm, expanding into obovate to spatulate blades 50–80 (–120+) × 15–25 (–35+) mm, margins not lobed, usually toothed, rarely entire. Cauline leaves petiolate or sessile; blades oblanceolate to lanceolate or linear, 50–120+ × 8–22+ mm, margins of midstem leaves usually entire proximally, regularly serrate distally. Involucres 18–28+ mm diam. Phyllaries (the larger) 2–3 mm wide. Ray-florets 21–34+; laminae 20–30 (–40+) mm. Ray cypselae 2–3 (–4) mm, apices usually bare, rarely obscurely auriculate. 2n = 90, 108.


Phenology: Flowering spring–summer.
Habitat: Disturbed sites, meadows, seeps, clearings
Elevation: 0–1500+ m

Distribution

V19-977-distribution-map.gif

Introduced; Ala., Calif., Wyo., w Europe (widely cultivated), w Europe (sparingly adventive)

Discussion

The name Shasta daisy of horticulture is associated also with Leucanthemum ×superbum (Bergmans ex J. Ingram) Bergmans ex D. H. Kent, which is generally thought to have been derived from hybrids between L. maximum and L. lacustre. Cultivars of “Shasta daisy” number in the dozens, including “single,” “double,” “quill,” and “shaggy” forms; they may be encountered as waifs or persisting from abandoned plantings.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Leucanthemum maximum"
not tailed +  and obtuse +
auriculate +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(Ramond) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
decurrent +
Chrysanthemum maximum +
compound +  and simple +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
oblanceolate;lanceolate or linear +
0.8 cm8 mm <br />0.008 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
sessile +  and petiolate +
Shasta daisy +
zygomorphic +, actinomorphic +  and (3-)5-merous +
yellow +  and white +
winged +  and monomorphic +
less columnar +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Calif. +, Wyo. +, w Europe (widely cultivated) +  and w Europe (sparingly adventive) +
0–1500+ m +
glabrous +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites, meadows, seeps, clearings +
in 2s +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1.8 cm18 mm <br />0.018 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
hemispheric +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
ovate +  and linear +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
deltate +
serrate +  and entire +
toothed +  and not lobed +
2-carpellate +
persistent +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
expanding +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Flowering spring–summer. +
35 +  and 60 +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Introduced +
branched +  and simple +
hairy +  and glabrous +
appendaged +  and truncate +
papillate +
Compositae +
Leucanthemum maximum +
Leucanthemum +
species +
campanulate +
cylindric +
60 cm600 mm <br />0.6 m <br /> (80 cm800 mm <br />0.8 m <br />) +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +