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Saudi Arabia flora checklist
Plumbago zeylanica L.
Nomencalture
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Family: PlumbaginaceaeGenus: Plumbago
SUMMARY
Plumbago zeylanica Linnaeus, Sp. Pl. 1: 151. 1753.
Perennial herbs or shrubs, erect, 1-3 m tall, evergreen. Branches spreading, often lianous. Petiole base sometimes auriculate; leaf blade ovate, (3-)5-8(-13) X (1.8-)2.5-4(-7) cm, thin, base cuneate to obtuse, apex acuminate and mucronate. Inflorescences spicate-racemose, (3-)5-70-flowered; peduncle 0.5-1.5 cm, glandular; rachis glandular, (2-)3-8(-15) cm; bracts subovate, 4-6(-8) X (1-)1.5-2(-2.5) mm, apex acuminate; bractlets linear, ca. 2 X 0.5 mm. Calyx 1.0-1.2 cm, to 1.3 cm after anthesis, glandular almost throughout, tube ca. 2 mm in diam. at middle. Corolla white to pale bluish white, tube 1.8--2.2 cm, limb 1.6-1.8 cm in diam.; lobes obovate to oblong-lanceolate, ca. 7 X (2-)4 mm, apex mucronate to acuminate. Anthers blue, ca. 2 mm. Ovary ellipsoid, 5-angular. Style glabrous. Capsules pale yellow-brown, oblong. Seeds red-brown, ca. 7 X 1.5 X 0.6 mm, apex acute. Fl. Oct-Mar, fr. Dec-Apr. 2n = 28.