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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 casiquiarensis Loes.

Habit, vegetative morphology.— Evergreen. Current year's branchlets glabrous (à part quelques rares poils). Branchlets older than one year smooth or furrowed or rough, greyish or brownish, glabrous. Lenticels on current year's branchlets absent or hardly visible. Internodes 0.2–2.5 cm. Stipules caducous (invisibles), deltoid, 0.1 mm. Petiole glabrous, rough or grooved surface, 6–9 mm. Lamina elliptic or obovate, oblong (1:2) or lanceolate (1:3), 6.5–12.5 X, 2–3.5 cm, coriaceous (subcoriace), glabrous abaxially. Base cuneate or acute. Apex obtuse or acute, not mucronate. Apex retuse or acuminate or cuspidate. Acumen 0.5–1.5 cm. Margin revolute (faiblement), crenate or dentate, teeth inconspicuous. Teeth 8–12 ca., over the entire length of the margin. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 6–10 pairs. Tertiary veins abaxially evident (quoique peu nombreuses). Ponctuation abaxiallly present.

Inflorescences.— Thyrse, non proliferating.

Male flowers.— Thyrses axes fasciculate and axillary. Thyrses axes 0.4–1.8 cm. Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 1.5–2.5 mm. Pherophylls of order 1 at 4–6 tenth from the base. Peduncles of order 2 0.5–0.7 mm. Pherophylls of order 2 at 0–1 tenth from the base. Bracts deltoids, pubescent, 0.5–0.7 mm, margin ciliate or dentate (par des poils). Pherophylls of order 1 opposite, deltoid, pubescent, 0.3–0.4 mm, margin ciliate (par des poils). Male flowers 4 -merous (4–5 selon LOESENER 1901). Calyx glabrous, 1.4–1.7 mm in diam., margin ciliate or dentate (finement). Corolla 1.5–2 mm, petals connate on, petals 20–25 % of their length. Apex margin entire (mais très irrégulière, presque dentée). Rudimentary ovary pyramidal, glabrous.

Female flowers.— Thyrses axes fasciculate and axillary. Thyrses axes 0.05–1 cm. Cymes of order 1. Peduncles pubescent. Peduncles of order 1 0.5–1.2 mm. Pherophylls of order 1 at 2–4 tenth of the base. Bracts deltoids, pubescent, 0.5–0.7 mm, margin entire (mais poilue). Pherophylls of order 1 opposite, deltoids, pubescent, 0.3 mm, margin ciliate. Female flowers 4 -merous. Calyx glabrous, margin ciliate or dentate, 2–3 mm in diam. Corolla 1.5–2 mm, petals connate on, petals 20–25 % of their length. Apex margin entire (possibly beaded). Staminodes sagittate, glabrous. Ovary spherical, glabrous, stigma mamillate or capitate, stigma glabrous.

Distribution, ecology.— South America, Brazil (Amazonas, Rio Negro, San Carlos), 100 m (probablement, d'après la localité).

Illustrations.— • Dessin in Berry & al (1995). Flora of the Venezuelan Guayana. • Dessin: Spruce 3471 G mâle et femelle. • Planche Spruce 3471 [a] G m (ILT). • Rameau Spruce 3471 [a] G m (ILT). • Inflorescence Spruce 3471 [a] G m (ILT). • Inflorescence Spruce 3471 [a] G m (ILT). • Inflorescence Spruce 3471 [a] G m (ILT). • Planche Spruce 3471 [b] G f (ST). • Rameau Spruce 3471 [b] G f (ST). • Marge limbe Spruce 3471 [b] G f (ST). • Inflorescence Spruce 3471 [b] G f (ST). • Inflorescence Spruce 3471 [b] G f (ST). • Planche Spruce 3471 [a] W m (ILT).


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).