Heliotropium arbainense
The Classification of the Taxon :
- Domain : Eukaryota
- Kingdom : Plantae
- Phylum : Spermatophyta
- Class : Magnoliopsida
- Order : Boraginales
- Family : Heliotropiaceae
- Genus : Heliotropium
- Species : Heliotropium arbainense
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Heliotropium arbainense Fresen., Mus. Senckenb. 1 : 168 (1834). Plate Borag. 7, c.
- Distribution : Palestine, Jordan, Egypt, Sudan.
- Saudi Arabia : Southwestern region and Asir.
- Habit : Perennial, densely hairy, yellowish-green, low herb with woody base.
- Leaves : leaves with c. 5 mm petioles, ovate to lanceolate, up to c. 3.5 x 1 cm, prominently veined on the ventral face, the veins sunken on the dorsal face, undulate, acute.
- Inflorescences : Inflorescence of short, spicate, scorpioid cymes; the spikes usually c. 2.5 cm long, dense.
- Flowers : yellow.
- Calyx c. 3.5 mm long, 5-lobed, densely hairy.
- Corolla up to c. 7 mm long, densely hairy outside; tube 5-ribbed, wider near the top, with 5 undulate lobes.
- Anthers c. 1.5 mm long, inserted nearer the base of corolla-tube.
- Stigma almost sessile on the ovary, flattened-conical.
- Nutlets four, glabrous, tubercled, as long as or shorter than the calyx lobes.