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Published In: Science; a weekly journal devoted to the advancement of science, new series 12(300): 479. 1900. (28 Sept 1900) (Science) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: KAMAL A. MALIK
Flower/Fruit: Fl. Per.: Throughout the year.
Type: Type: Humboldt and Bonpland (P).
Distribution: Distribution: Indigenous to Cuba; cultivated in Pakistan as an ornamental plant.
Illustration: Roystonea regia (Kunth) O.F. Cook (Illustration)


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Stem up to 40 m tall, usually displaying a distinct thickening towards the middle, greyish white, smooth. Crown roundish, leaves up to 4 m long, drooping, divided into numerous leaflets, pinnae in two rows on either side of rachis, lower pinnae 60-71 x 2-2.5 cm, middle pinnae 70-90 x 3.5-5.0 cm, reduplicate from the base, rachis tapering towards the apex; petiole glabrous, unarmed, smooth, elongated into a leaf sheath forming a shining greenish elongated crown shaft, crown shaft reaching up to 120 cm. Inflorescence profusely branched. Male flower much larger than the female, calyx and corolla 3-lobed, corolla thin, larger than the calyx, petals 0.5 x c. 0.2 mm, valvate, joined at the base; stamens 9, exserted, filaments subulate, 0.5 mm long, joined at the base beneath the pistillode; pistillode smaller, anthers dorsifixed, large. Female flowers 3-4 mm long, white; stigma triangular and surrounded by 6 scale-like staminodes. Fruit globose, fleshy 1-1.2 cm long, scar near the base of the fruit.
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