Ipomoea heterotricha Didr.
  • Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn


Cite taxon page as 'WFO (2020): Ipomoea heterotricha Didr. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001298737. Accessed on: 19 Sep 2020'

Morphology

Corolla purple or white, funnel-shaped, 1.7–2.4 cm. long.

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    Annual herb with prostrate or twining stems up to 1 m. long, pilose with long, spreading, yellowish or silvery hairs.

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    Leaf-blade ovate, up to 8.7 cm. long and 5 cm. wide, acute at the apex, ± cordate at the base, green but with long adpressed hairs above, silvery-velvety with dense adpressed hairs beneath; veins also pilose; petiole 1.2–7.5 cm. long, pilose.

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    Flowers in dense heads about 3 cm. wide; peduncle 0.6–4 cm. long; outer bracts foliaceous, up to 3 cm. long and 1 cm. wide; inner bracts narrow, 1.4–1.7 cm. long, 2–4 mm. wide, all with an indumentum similar to that on the leaves.

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    Sepals unequal, accrescent, the outer 6 mm. long, linear-lanceolate.

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    Seeds black, puberulous.

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    Capsule ovoid, glabrous.

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    Stems prostrate to twining up to l·5 m. long, densely covered with fine soft spreading golden hairs, associated in the younger parts as also in the petiole and peduncle with short appressed white hairs.

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    Annual herb.

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    Flowers in dense cymose heads, up to 4 cm. wide, densely hairy; peduncle 1–7 cm. long; outer bracts foliaceous, bluntly linear-lanceolate, up to 3 cm. long; inner bracts narrow up to 1·8 cm. long, all with an indumentum similar to that on the leaves.

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    Leaf lamina ovate, up to 9·5 × 5·5 cm., often more or less cordate at the base, acute at the apex, green but with long appressed hairs above, silvery-velvety with appressed whitish silky hairs beneath; veins and margin also pilose; petiole 1–6 cm. long, densely pilose like the young shoots and peduncles.

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    Corolla funnel-shaped, purple or white, up to 2·8 cm. long; midpetaline areas with long stiffish hairs on the upper part of the limb.

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    Sepals subequal, accrescent, linear-lanceolate, more or less 6 mm. long, densely clothed with long stiffish yellowish hairs.

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