Flora of North America species comparison

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Argemone albiflora

bluestem pricklypoppy, white prickly-poppy
Habit Plants annual or biennial.
Stems

4-10(-15) dm, sparingly to moderately prickly.
Leaf

blades: abaxial surface sparingly prickly on main veins, adaxial surface unarmed or sparingly prickly on main veins;

basal and proximal lobed 1/2-4/5 distance to midrib;

distal clasping.
Inflorescences

buds broadly ellipsoid to subglobose, body 12-18 × 10-16 mm, sparingly to rather closely prickly;

sepal horns terete, 3-6(-10) mm, usually unarmed.
Flowers

5-10 cm broad, closely to more distantly subtended by 1-2 foliaceous bracts;

petals white;

stamens 150 or more;

filaments lemon yellow;

pistil (3-)4-5(-7)-carpellate.
Capsules

oblong, oblong-ellipsoid, or narrowly ellipsoid, 20-40(-45) × 10-15(-25) mm (including stigma and excluding prickles), prickly, surface clearly visible to partially obscured, longest prickles widely spaced, 6-10(-12) mm, sometimes interspersed with smaller ones.
Seeds

1.6-2 mm.

Argemone albiflora
Distribution
from FNA
AL; AR; CT; FL; GA; IL; LA; MA; MI; MO; MS; NC; NY; SC; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Capsules oblong to oblong-ellipsoid, prickles equal, widely spaced.
subsp. albiflora
1. Capsules usually narrowly ellipsoid, prickles unequal, longer ones widely spaced, interspersed with shorter, unequal ones.
subsp. texana
Source FNA vol. 3.
Parent taxa Papaveraceae > Argemone
Sibling taxa
A. aenea, A. arizonica, A. aurantiaca, A. chisosensis, A. corymbosa, A. gracilenta, A. hispida, A. mexicana, A. munita, A. ochroleuca, A. pleiacantha, A. polyanthemos, A. sanguinea, A. squarrosa
Subordinate taxa
A. albiflora subsp. albiflora, A. albiflora subsp. texana
Name authority Hornemann: Hort. Bot. Hafn. 2: 489. (1815)
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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