WorldFloraDB - Hypecoum

Characteristics

Herbs, annual, low, usually glaucous, glabrous, taprooted, rosulate. Leaves in a basal rosette, lanceolate, oblanceolate, to narrowly obovate in outline, imparipinnate with deeply divided segments. Flowers in long pedunculate dichasia from rosette, bisymmetric. Petals 4, yellow, white, or bluish pink; outer petals flat, shallowly 3-lobed to entire; inner petals deeply 3-lobed; lateral lobes oblong, entire; median lobe with a narrow base and a rounded to oblong limb with a fimbriate or ± denticulate margin, specialized for secondary pollen presentation, initially pressed to stamens/gynoecium. Stamens 4, each with 2 thecae, but median ones with 2 vascular bundles, lateral ones with 1 vascular bundle; filaments flat, ± translucent, with lateral basal nectaries; anthers oblong, extrorse. Style with 2 narrow commissural stigmatic branches. Fruit linear, with many seeds in 1 row, dehiscing with 2 valves or breaking up into 1-seeded units. Seeds flattish, covered with oxalate crystals. Pollen with 2 long colpi, sometimes fused into a synaperture. Chromosome base number = 8.

More

Semi-succulent annuals, usually glabrous, glaucous. Stems procumbent to erect, branching from base. Leaves 2–3-pinnatisect. Inflorescence cymose. Bracts leaf-like, exceeding pedicel. Flowers zygomorphic, usually yellow. Sepals attached at base. Outer pair of petals entire or 3-lobed; inner pair smaller, usually deeply 3-lobed with the mid-lobe spathulate, often fringed with hairs. Stamens 4, usually with winged filaments. Pistil: ovary with numerous ovules; style with 2 stigmas. Fruit narrow, linear, breaking transversely into 1-seeded segments, or indehiscent, or rarely a pod-like capsule dehiscing by 2 valves. Seeds ovoid, octahedral or D-shaped, ± tuberculate.

Life form	annual
Growth form	herb
Growth support	-
Foliage retention	deciduous
Sexuality	hermaphrodite
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Root system	tap-root
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Environment

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Hardiness (USDA)

Usage

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Cultivation

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