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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 chamaedryfolia Reissek

Habit, vegetative morphology.— Shrub, evergreen, 1–2 m tall. Current year's branchlets glabrous or pubescent (poils très fins et très courts). Branchlets older than one year rough, greyish or brownish, glabrous or pubescent, dense short trichomes (comme du velour). Lenticels on current year's branchlets present. Internodes 0.1–0.5(–0.8) cm. Stipules caducous, linear-triangular, 0.1–0.5 mm. Petiole pubescent (poils très courts), rough or grooved surface, 1–3 mm. Lamina elliptic or obovate, oblong (1:2) or lanceolate (1:3) (sublancéolé), (0.9–)1.5–2.4(–2.9) X, (0.5–)0.7–0.9(–1.2) cm, coriaceous, glabrous abaxially. Base attenuate or cuneate or acute. Apex obtuse or acute, mucronate (souvent caduque). Apex rounded. Margin revolute, crenate or dentate, teeth conspicuous. Teeth 5–7 ca., on the distal half of the margin. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 4–5 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly present (souvent très espacée, quelques points).

Inflorescences.— Thyrse, proliferating.

Male flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.05–3 cm. Cymes of order 1–2. Peduncles glabrous or pubescent (poils rares, plutôt sur la partie basale). Peduncles of order 1 3–6 mm. Pherophylls of order 1 at 2–5 tenth from the base. Peduncles of order 2 1–2 mm. Pherophylls of order 2 at 0–1 tenth from the base. Bracts linear-triangular, pubescent, 0.3–1 mm, margin entire. Pherophylls of order 1 opposite, linear-triangular, pubescent, 0.2–0.5 mm, margin entire. Male flowers 4 -merous, white. Calyx glabrous, 1.5–2 mm in diam., margin ciliate or dentate. Corolla 1.5–2 mm, petals connate on, petals 15–25 % of their length. Apex margin entire. Stamens at the anthesis equal to corolla or shorter than corolla. Rudimentary ovary subglobulous or flattened, glabrous.

Female flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.05–4 cm. Cymes of order 1. Peduncles pubescent. Peduncles of order 1 4–6 mm. Pherophylls of order 1 at 1–3 tenth of the base. Bracts linear-triangulate, pubescent, 0.5–1 mm, margin entire. Pherophylls of order 1 opposite, linear-triangulate, pubescent, 0.5 mm, margin entire. Female flowers 4 -merous, white. Calyx glabrous, margin ciliate or dentate, 2–3 mm in diam. Corolla 2.5–3 mm, petals connate on, petals 15–25 % of their length. Apex margin entire (possibly beaded). Staminodes sagittate, glabrous. Ovary spherical, glabrous, stigma capitate, stigma glabrous.

Fruits.— Fruit black, spherical, 3–4 mm in diam., 3–4 mm.

Distribution, ecology.— South America, Brazil (Minas Gerais), Bord de rivière (?).

Flowering.— August or September or October or November.

Vernacular name.— Selon Loesener 1901: "Congonhinha, Congonha do campo, Congonha miuda, Congonha da folha miuda".

Illustrations.— • Planche Widgren s.n. W f. • Limbes, face inf. Widgren s.n. W f. • Inflorescence Widgren s.n. W f. • Inflorescence Widgren s.n. W f. • Inflorescence Widgren s.n. W f. • Planche Widgren 469 WU f (ST). • Feuilles faces supérieure & inférieure Widgren 469 WU f (ST). • Inflorescence Widgren 469 WU f (ST). • Planche Widgren 470 BR f (ST). • Etiquettes Widgren 470 BR f (ST). • Rameau Widgren 470 BR f (ST). • Planche Widgren 469 BR f (ST). • Etiquettes Widgren 469 BR f (ST). • Rameau Widgren 469 BR f (ST). • Planche Lindberg 505 BR f (ST). • Etiquettes Lindberg 505 BR f (ST). • Rameau Lindberg 505 BR f (ST).


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).