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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


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Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera


Ilex tepuiana pp. Steyerm. ex Edwin

Habit, vegetative morphology.— Tree or shrub, evergreen, 10 m tall. Current year's branchlets glabrous. Branchlets older than one year smooth or furrowed, reddish, glabrous. Lenticels on current year's branchlets present. Internodes 0.5–2 cm. Stipules caducous, linear-triangular, 0.5 mm. Petiole glabrous, rough or grooved surface, 2–5 mm. Lamina obovate, oblong (1:2) to lanceolate (1:3), 4.5–8 X, 2.3–4.5 cm, coriaceous, glabrous abaxially. Base cuneate to acute. Apex obtuse to acute, mucronate. Apex retuse or emarginate or rounded. Margin revolute, entire. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 6–8 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly present.

Inflorescences.— Solitary dichasium.

Male flowers.— Cymes of order 2–3. Peduncles glabrous. Peduncles of order 1 6–9 mm. Pherophylls of order 1 at 6–8 tenth from the base. Peduncles of order 2 2–3 mm. Male flowers 4 -merous. Calyx pubescent, margin ciliate or dentate.

Female flowers.— Cymes of order 1–2. Peduncles glabrous. Peduncles of order 1 8–20 mm. Pherophylls of order 1 at 8 tenth of the base. Peduncles of order 2 5 mm. Pherophylls of order 2 at 0–1 tenth of the base. Pherophylls of order 1 opposite, deltoids, glabrous, 0.5 mm, margin entire. Female flowers 4 -merous. Calyx glabrous, margin entire, 5–6 mm in diam.

Fruits.— Fruit red or black, spherical, 7–8 mm in diam., 7–8 mm.

Distribution, ecology.— South America, Venezuela (Bolívar: Macizo del Chimantá (Toronó-tepui), between Ptari-tepui and Soropán-tepui) British Guyana (Partang River, Merume Mountains), 1600–1700 m, Montane forests, talus slopes along sandstone escarpments.

Illustrations.— • Dessin in Berry & al. (1995). Flora of the Venezuelan Guayana. • Planche Steyermark 75509 K=WIS f (PT). • Planche Steyermark 75509 MO. • Etiquette Steyermark 75509 MO. • Rameau Steyermark 75509 MO. • Fruit Steyermark 75509 MO. • Planche Steyermark 60290 NY.


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).