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(Last Modified On 4/2/2013)
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(Last Modified On 4/2/2013)
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Genus
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Hackelia Opiz in Bercht.
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PlaceOfPublication
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Fl. Boehm. 2(2): 146, 1838.
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Description
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Herbs, mostly perennial, rarely biennial or annual, ? glabrous to pubesscent. Leaves alternate, mostly narrow, entire, the basal ones sometimes long petiolate. Inflorescences raceme-like, scorpioid, tending to elongate in age, bracts absent or leaf-like on the lower flowers. Flowers perfect, mostly actinomorphic or weakly zygomorphic; calyx of 5 sepals, ? free or connate basally; corolla salverform to funnelform, white or blue, often with a yellow center, 5-lobed, the lobes equal or ? unequal, 5 faucal appendages variously developed; stamens 5, included, the filaments short, the anthers linear; ovary 4-lobed, distinctly so, gynobase disc-like and somewhat lobed, the style simple and gynobasic, the stigma capitate. Fruit 4 nutlets, medially adnate to the gynobase, the scar conspicuous, tnhe dorsal side with glochidiate spines, the spines larger along the margins, sometimes 2 of the nutlets with short spines and 2 with longer spines.
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Habit
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Herbs
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Distribution
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A genus of about 30 species, widely distributed, but centered in western North America. One species is found in Panama.
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Reference
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Johnston, I. M. Studies in the Boraginaceae. I. Restoration of the genus Hackelia. Contr. Gray Herb. 68: 43-48, 1923.
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