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Conservatoire et Jardin botaniques de la Ville de Genève

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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


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Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera


Ilex nayana Cuatrec.

Habit, vegetative morphology.— Tree (grand), evergreen. Current year's branchlets glabrous (quelques poils très courts invisibles à l'oeil nu). Branchlets older than one year rough, brownish, glabrous. Lenticels on current year's branchlets present (sur les vieux rameaux). Internodes 0.6–0.8 cm. Stipules caducous, deltoid or linear-triangular, 0.1–0.2 mm. Petiole smooth surface, 5–10 mm. Lamina elliptic, oblong (1:2), 6–10 X, 2–4 cm, papyraceous or coriaceous, glabrous abaxially. Base cuneate or acute. Apex obtuse or acute, not mucronate. Apex acuminate. Acumen 0.7–1 cm. Margin revolute (très finement), entire. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 8–10 pairs. Tertiary veins abaxially evident. Ponctuation abaxiallly absent.

Inflorescences.— Thyrse, proliferating.

Male flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.2–2 cm. Cymes of order 1–3. Peduncles pubescent (finement). Peduncles of order 1 7–14 mm. Pherophylls of order 1 at 6–7 tenth from the base. Peduncles of order 2 2–4 mm. Peduncles of order 3 2–4 mm. Bracts deltoids or linear-triangular, pubescent, 0.2–0.5 mm, margin entire. Pherophylls of order 1 deltoid, pubescent, 0.2 mm, margin entire. Male flowers 4 -merous. Calyx glabrous (à part quelques poils), 1.5–2 mm in diam., margin ciliate or dentate. Corolla 2 mm, petals free, petals 0 % of their length (libres). Apex margin entire (papilleuse). Stamens at the anthesis equal to corolla. Rudimentary ovary pyramidal, glabrous.

Distribution, ecology.— South America, Colombia (rio Naya), 1–4 m.

Illustrations.— • Planche Cuatrecasas 14286 Uat (IT). • Rameau Cuatrecasas 14286 Uat. • Rameau Cuatrecasas 14286 Uat. • Etiquette Cuatrecasas 14286 Uat.


Cite this publication as: ‘Loizeau, P.-A. & G. Barriera (2007). Aquifoliaceae néotropicales: Descriptions, Illustrations, Identification, et Recherche d'Information. Version: 1st march 2007. http://www.ville-ge.ch/cjb/.
Loizeau (1994) et Loizeau & Spichiger (1992) should also be cited (see Bibliography).