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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera

Ilex ardisiifrons Reiss.

Habit, vegetative morphology.— Shrub, evergreen, 2–6 m tall. Current year's branchlets glabrous or pubescent. Branchlets older than one year smooth or furrowed, greyish or reddish, glabrous or pubescent, dense short trichomes (poils très courts). Lenticels on current year's branchlets present. Internodes 0.3–2 cm. Stipules caducous, deltoid or linear-triangular, 0.4–0.8 mm. Petiole glabrous or pubescent, rough or grooved surface, 3–9(–11) mm. Lamina elliptic or obovate, oblong (1:2) or lanceolate (1:3), 3.7–10 X, 1.7–3.5 cm, papyraceous or coriaceous, glabrous abaxially or pubescent abaxially (parfois poils minuscules a la base des feuilles). Base attenuate or cuneate or acute or obtuse. Apex rounded or obtuse, mucronate or not mucronate. Apex retuse or emarginate or rounded or acuminate. Acumen 0–0.5 cm. Margin revolute, entire. Midbrid adaxially impressed, glabrous or pubescent on proximal half or pubescent (poils minuscules). Midbrid abaxially raised, glabrous or pubescent on proximal half (poils minuscules). Secondary veins abaxially obscure, 5–10 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly present.

Inflorescences.— Thyrse, non proliferating.

Female flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.5–0.6 cm. Cymes of order 1. Peduncles pubescent. Peduncles of order 1 2–4 mm. Pherophylls of order 1 at 3–8 tenth of the base. Bracts deltoids, pubescent, 0.5–1.2 mm, margin entire or margin ciliate or dentate. Pherophylls of order 1 opposite, linear-triangulate, pubescent, 0.4–0.6 mm, margin ciliate. Female flowers 4 -merous. Calyx glabrous or pubescent (poils minuscules), margin ciliate or dentate, 2.2–3.5 mm in diam. Ovary glabrous, stigma capitate, stigma glabrous.

Fruits.— Fruit red or of another color than red, black or green (vert-jaune), spherical, 4–9 mm in diam., 4–9 mm.

Distribution, ecology.— South America, Colombia Brazil (Amazonas) Bolivia, 90–850 m, forêt, savanne à sol pierreux, avec sable blanc; savanne humide, zone inondable.

Illustrations.— • Planche Martius s.n. M f (HT). • Etiquette Martius s.n. M f (HT). • Rameau et feuilles Martius s.n. M f (HT). • Fruits et pyrènes Martius s.n. M f (HT).

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