Heliotropiaceae Schrad., Commentat. Soc. Regiae Sci. Goett . Recent. 4: 192. 1819, 2023
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publication ID |
https://dx.doi.org/10.3897/phytokeys.232.103647 |
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persistent identifier |
https://treatment.plazi.org/id/44ADB9EC-7FC9-5998-9285-B8375A94F313 |
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treatment provided by |
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scientific name |
Heliotropiaceae Schrad., Commentat. Soc. Regiae Sci. Goett . Recent. 4: 192. 1819 |
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nom. cons. |
Heliotropiaceae Schrad., Commentat. Soc. Regiae Sci. Goett. Recent. 4: 192. 1819 View in CoL View at ENA nom. cons.
Type genus.
Heliotropium L.
Description.
Annual or perennial herbs, climbing shrubs or small trees. Leaves simple, alternate, exstipulate, petiolate or sessile; lamina linear to ovate, apex acute to acuminate, margin entire or revolute. Inflorescences terminal or axillary, spike-like, scorpioid, subcapitate or subcorymbose cymes; with or without bracts. Flowers 5-merous, rarely 4-merous, bisexual, actinomorphic. Calyx 5-lobed, divided almost to the base, lobes linear to ovate, entire, persistent. Corolla white to pinkish-white, purple, pale green or greenish to yellowish, campanulate to funnel-shaped, lobes orbicular. Stamens 5, filaments adnate to the corolla tube. Pistil ovary superior, bicarpellate, usually 4-loculate, 1 ovule per locule, nectar disc at the base surrounds the ovary; style terminal, with a conical stigma structure forming a basal ring around style. Fruit dry or fleshy, separating into four 1-seeded nutlets or two 2-seeded nutlets. Seeds straight or curved, with endosperm.
Two genera and 12 species are found in Thailand.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.