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Heliotropiaceae

Heliotropiaceae Schrad., Commentat. Soc. Regiae Sci. Gott. Recent. 4: 192 (1819), nom. cons.

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Flowering Plants. Eudicots

Part of the book series: The Families and Genera of Vascular Plants ((FAMILIES GENERA,volume 14))

Abstract

Annual or perennial herbs, subshrubs, shrubs, lianas or small trees; hermaphrodite or rarely unisexual and dioecious; indumentum of simple, unicellular, eglandular trichomes, sometimes with glandular cells. Leaves alternate, petiolate or sessile, exstipulate; lamina linear to suborbicular, margin usually entire, very rarely crenate or dentate, often revolute; apex mostly acute or acuminate; base cuneate or decurrent. Inflorescences thyrsoids, terminal or axillary; partial inflorescences scorpioid cymes. Flowers perfect, rarely unisexual, actinomorphic, chasmogamous, sessile or shortly pedicellate; calyx tube usually short, mostly campanulate, calyx lobes often unequal, linear to ovate, glabrous to densely hairy, mostly persistent after anthesis; corolla sympetalous, with subcircular to linear lobes; androecium haplostemonous, stamens antesepalous and borne on corolla tube, usually included, filaments short, linear; anthers dorsifixed, usually linear, tetrasporangiate; gynoecium superior, syncarpous, bicarpellate, usually 4-loculate with one ovule in each locule; ovule anatropous to hemitropous, unitegmic, tenuinucellate; style terminal with a conical stigmatic head with a basal ring-shaped stigma and a sterile, sometimes two-lobed apex; nectary disk at the base of the ovary. Fruit dry or fleshy, usually 4-seeded, rarely 1–2-seeded, falling apart into 1–4 mericarpids with 1–2 seeds each. Embryo minute, straight to curved, embedded in thin endosperm, cotyledons linear to ovoid.

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Authors and Affiliations

  1. Milowstraße 10, 14195, Berlin, Germany

    N. Diane

  2. Systematische Botanik und Pflanzengeographie, Institut für Biologie, Freie Universität Berlin, Berlin, Germany

    H. H. Hilger

  3. Heilmannstr. 5, 82049, Pullach, Germany

    H. Förther

  4. Nees-Institut für Biodiversität der Pflanzen, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany

    M. Weigend & F. Luebert

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  1. N. Diane
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  2. H. H. Hilger
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  3. H. Förther
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  4. M. Weigend
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  5. F. Luebert
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Correspondence to N. Diane .

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Editors and Affiliations

  1. Johannes Gutenberg, Universität Mainz, Mainz, Germany

    Joachim W. Kadereit

  2. Campinas, Brazil

    Volker Bittrich

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Diane, N., Hilger, H.H., Förther, H., Weigend, M., Luebert, F. (2016). Heliotropiaceae. In: Kadereit, J., Bittrich, V. (eds) Flowering Plants. Eudicots. The Families and Genera of Vascular Plants, vol 14. Springer, Cham. https://doi.org/10.1007/978-3-319-28534-4_17

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