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FOC | Family List | FOC Vol. 16 | Boraginaceae | Heliotropium

4. Heliotropium formosanum I. M. Johnston, J. Arnold Arbor. 32: 114. 1951.

台湾天芥菜 tai wan tian jie cai

Herbs perennial, ascending or prostrate, short gray strigose. Stems 10-25 cm tall, base usually woody; branches sparse, slender. Leaves crowded; petiole of basal leaves ca. 1 mm, other leaves ± sessile; leaf blade elliptic to ovate, 3-4 × 1-2 mm, base obtuse to rounded, apex acute; midvein prominent adaxially. Inflorescences terminal, obscurely scorpioid, 0.8-1.5 cm, 4-8-flowered; bracts ovate to elliptic, 2-3 mm. Flowers crowded. Calyx 2-3 mm, strigose outside, subglabrous inside; lobes unequal, 0.5-1.2 mm wide, slightly surpassing corolla tube. Corolla white, 3.5-4 mm; tube ca. 1.5 mm, middle 0.8-1 mm wide; throat slightly contracted, densely tomentose; limb to 4 mm wide; lobes ovate-triangular, ca. 1 mm wide, with a wide obtuse fold between lobes. Filaments extremely short, inserted 0.4-0.6 mm above base of corolla tube; anthers ovate-lanceolate, 0.6-0.7 mm, apex coherent. Ovary smooth. Style ca. 0.5 mm; stigma long conical, 0.7-0.8 mm. Fruit convex, 1-1.2 mm, appressed pubescent above middle; mericarps with an aperture adaxially at middle, ribs with a scar at middle.

* Taiwan.


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