Flora of North America species comparison

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Papaver rhoeas

Papaver walpolei

amapola, common poppy, coquelicot, corn poppy, field poppy, flanders poppy

walpole's poppy
Habit Plants to 8 dm, hispid to setulose. Plants densely cespitose, to 1(-2) dm.
Stems

simple or usually branching.

Leaves

to 15 cm;

distal often somewhat clustered.

to 4 cm;

petiole to 3/4 length of leaf;

blade light green abaxially, dark green adaxially, sometimes glaucous, short-lanceolate, unlobed or 1x-lobed with 1(-2) pair(s) of lateral lobes, glabrous adaxially;

terminal lobe rarely with small secondary lobes, apex rounded.
Inflorescences

peduncle sparsely to moderately spreading-hispid throughout.

scapes erect, glabrate to hispid.
Flowers

petals white, pink, orange, or red, often with dark basal spot, to 3.5 cm;

anthers bluish;

stigmas 5-18, disc ± flat.

to 3 cm diam.;

petals yellow, or white with yellow basal spot;

anthers yellow;

stigmas 4-5, disc convex.
Capsules

sessile or substipitate, turbinate to subglobose, obscurely ribbed, to 2 cm, less than 2 times longer than broad.

turbinate to ellipsoid-obovoid, to 1 cm, sparsely to densely hirsute, trichomes light brown to black.
2n

= 14.

Papaver rhoeas

Papaver walpolei
Phenology Flowering spring–summer. Flowering late May–Aug.
Habitat Fields, pastures, stream banks, railroads, roadsides, and other disturbed sites Exposed tundra uplands, especially calcareous fellfield and river gravels
Elevation 0-2000 m [0-6600 ft] 0-900 m [0-3000 ft]
Distribution
from FNA
AK; CA; CT; DC; IA; ID; IL; LA; MA; MD; ME; MI; MN; MO; MT; NC; NH; NJ; NM; NY; OH; OR; PA; RI; TX; UT; VA; VT; WA; WV; MB; NB; NS; ON; QC; SK; Europe; sw Asia; n Africa [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; YT; Asia (Russian Far East, Chukotka)
[BONAP county map]
Discussion

J. W. Kadereit (1990) suggested that Papaver rhoeas originated on the east coast of the Mediterranean, probably derived from one or more of the other species of the section that are native in that region, and only after (and because) "suitable habitats in sufficient extent were provided by man." Various forms with pale pink or white, unspotted, sometimes doubled petals are grown for ornament, notably the Shirley poppies. In North America, the species escapes from cultivation fairly readily and has been introduced also as a crop weed.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. FNA vol. 3.
Parent taxa Papaveraceae > Papaver > sect. Rhoeadium Papaveraceae > Papaver > sect. Meconella
Sibling taxa
P. alboroseum, P. argemone, P. californicum, P. dubium, P. gorodkovii, P. hybridum, P. lapponicum, P. macounii, P. mcconnellii, P. nudicaule, P. orientale, P. pygmaeum, P. radicatum, P. somniferum, P. walpolei
P. alboroseum, P. argemone, P. californicum, P. dubium, P. gorodkovii, P. hybridum, P. lapponicum, P. macounii, P. mcconnellii, P. nudicaule, P. orientale, P. pygmaeum, P. radicatum, P. rhoeas, P. somniferum
Synonyms P. walpolei var. sulphureomaculatum
Name authority Linnaeus: Sp. Pl. 1: 507. (1753) A. E. Porsild: Rhodora 41: 231, plate 552, figs. 4-10. (1939)
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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