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Twocarpel Dwarf-Flax (Hesperolinon bicarpellatum)


Herbs, 10-30(-70) cm, puberulent on stems immediately distal to nodes, otherwise glabrous; branches usually alternate from distal nodes on short main axis, sometimes whorled from basal nodes, widely spreading. Leaves alternate; stipular glands present at proximal nodes, usually absent distally; blade threadlike to linear, 15-20(-30) - 1-1.5 mm, base flat, not clasping, margins without stalked glands. Inflorescences: cymes dichasial, open, internodes long, flowers widely scattered; bract margins without prominent glands. Pedicels (2-)10-12 mm, to 40 mm in fruit, spreading at 45-90- angle, not or only slightly bent at apex. Flowers: sepals all or outer 2 spreading, not reflexed at tip, lanceolate, 1.5-2(-3) mm, - equal, marginal glands minute or absent, surfaces glabrous; petals horizontally widely spreading, bright yellow fading white, tinged with orange or red along veins, oblanceolate to obovate, (2-)3-4 mm, apex acute or apiculate; cup yellow, rim lobed between filaments and petal attachments; stamens exserted; filaments 2-3(-3.5) mm; anthers yellow, dehisced anthers 1.2-1.5 mm; ovary chambers 4; styles 2(-3), yellow, 2-3.5 mm, exserted. 2N = 34.

Taxonomic tree

  • Domain: Eukarya

    • Kingdom: Plantae

      • Phylum: Magnoliophyta

        • Class: Magnoliopsida

          • Order: Malpighiales

            • Family: Linaceae

              • Genus: Hesperolinon