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Sonoran Pricklypoppy (Argemone gracilenta)

Description

Plants perennial. Stems 4-12(-18) dm, moderately prickly throughout, prickles patent, longest 7-10 mm. Leaf blades: abaxial surface prickly on main veins, adaxial surface unarmed or sparingly prickly on midrib; basal blades shallowly to often deeply lobed; distal not clasping. Inflorescences: buds subglobose to oblong, body 15-18 - 12-15 mm, sparingly prickly, prickles patent; sepal horns usually slender, terete, (5-)8-12(-14) mm, unarmed or with 1-2 prickles near base. Flowers 6-9 cm broad; petals white; stamens about 150; filaments pale yellow; pistil 3-4-carpellate. Capsules narrowly ellipsoid to narrowly ellipsoid-ovoid, 30-45 - 8-14 mm (including stigma and excluding prickles), scattered-prickly, surface clearly visible, longest prickles 6-8(-10) mm. Seeds to 2 mm. 2 n = 28.

Taxonomic tree

  • Domain: Eukarya

    • Kingdom: Plantae

      • Phylum: Magnoliophyta

        • Class: Magnoliopsida

          • Order: Ranunculales

            • Family: Papaveraceae

              • Genus: Argemone