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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 organensis Loes.

Habit, vegetative morphology.— Shrub. Current year's branchlets hirsute. Branchlets older than one year smooth or furrowed, reddish, pubescent (à glabres pour les vieux rameaux), dense short trichomes. Lenticels on current year's branchlets absent or hardly visible. Internodes 0.1–0.6 cm. Stipules caducous, linear-triangular, 0.3–0.4 mm. Petiole pubescent, rough or grooved surface, 4–5 mm. Lamina elliptic or obovate, oblong (1:2), 2–4 X, 1–2 cm, coriaceous, pubescent adaxially (plus les feuilles sont vieilles, moins il y a de poils), pubescent abaxially. Base cuneate or obtuse or rounded. Apex rounded or obtuse, mucronate. Apex rounded. Margin revolute, entire (dans la mesure où elle est révolutée, on ne voit pas les dents s'il y en a). Midbrid adaxially impressed or flat, pubescent. Midbrid abaxially raised, pubescent. Secondary veins abaxially obscure (presque invisibles), 4–7 pairs. Tertiary veins abaxially obscure (invisibles). Ponctuation abaxiallly absent.

Inflorescences.— Thyrse, proliferating.

Female flowers.— Thyrses axes solitary and axillary. Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 10 mm. Pherophylls of order 1 at 7 tenth of the base. Peduncles of order 2 3 mm. Pherophylls of order 2 at 0–1 tenth of the base. Pherophylls of order 1 opposite, linear-triangulate, pubescent, 0.5 mm, margin ciliate. Female flowers 4 -merous. Calyx pubescent, margin ciliate or dentate. Corolla 1.5–1.7 mm, petals connate on, petals 20–25 % of their length. Staminodes ovate, glabrous. Ovary pubescent, stigma glabrous.

Fruits.— Fruit spherical, 5 mm in diam., 5.5 mm.

Distribution, ecology.— South America, Brazil (Rio de Janeiro), 1700 m, Atque in restingis montis Tijuca iuxta Rio de Janeiro siti [Loesener 1908: 280"].

Flowering.— March (fruits).

Illustrations.— • Planche Gardner 5697 K f (IT). • Planche Gardner 5697 K f (HT). • Infrutescence Gardner 5697 K f (HT). • Planche Glaziou 12932 P st. • Etiquettes Glaziou 12932 P st. • Rameau Glaziou 12932 P st. • Limbe, face inf. Glaziou 12932 P st. • Limbe, face sup. Glaziou 12932 P st. • Planche Gardner 5697 BM f (IT). • Planche Gardner 5697 NYat (IT).


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).