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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 attenuata Steyerm. non Ashe 1924

Habit, vegetative morphology.— Tree, evergreen, 12 m tall. 20 cm dbh. Current year's branchlets pubescent. Branchlets older than one year smooth or furrowed, brownish, pubescent, dense short trichomes. Lenticels on current year's branchlets present (mais rares). Internodes 0.3–1 cm. Stipules caducous, linear-triangular, 0.5–0.8 mm. Petiole glabrous, smooth surface, 7–14 mm. Lamina elliptic, oblong (1:2) to lanceolate (1:3), 7–13.5 X, 2.5–4.7 cm, coriaceous, glabrous abaxially. Base acute or obtuse. Apex acute, not mucronate. Apex acuminate. Acumen 1–2 cm. Margin revolute, crenate to dentate, teeth inconspicuous to conspicuous. Teeth 7–10 ca., over the entire length of the margin. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 6–7 pairs. Tertiary veins abaxially evident. Ponctuation abaxiallly present.

Inflorescences.— Thyrse, proliferating.

Female flowers.— Thyrses axes solitary and axillary. Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 6–7 mm. Pherophylls of order 1 at 3–4 tenth of the base or 6–7 tenth of the base. Peduncles of order 2 3–4 mm. Pherophylls of order 2 at 0–2 tenth of the base. Bracts linear-triangulate, pubescent, 0.5–2 mm, margin entire. Pherophylls of order 1 opposite, linear-triangulate, pubescent, 0.5–1 mm, margin entire. Female flowers 4 -merous. Calyx pubescent, margin ciliate or dentate, 2–3 mm in diam. Corolla 2–2.5 mm. Staminodes sagittate, glabrous. Ovary ovoid, glabrous, stigma capitate, stigma glabrous.

Fruits.— Fruit green, spherical, 5–6 mm in diam., 5–6 mm.

Distribution, ecology.— South America, Brazil (Amazonas: Sierra Pirapucu), 1250 m.

Flowering.— November to December.

Illustrations.— • Planche Silva 60873 MO. • Etiquette Silva 60873 MO. • Infrutescence Silva 60873 MO. • Feuille Silva 60873 MO. • Infrutescence Silva 60873 MO. • Planche Silva 60873 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).