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Flora of the Venezuelan Guayana

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ANNONACEAE

5. DICLINANONA Diels, Notizbl. Bot. Gart. Berlin-Dahlem 10: 174. 1927.

by Julian A. Steyermark

Small to medium-sized trees, young stems covered with simple hairs. Inflorescence axillary, several-flowered; peduncles articulate above a bract. Flowers bisexual or unisexual (plants polygamous or dioecious), medium-sized, remaining almost closed at anthesis; pedicels short. Sepals 3, free, valvate; petals 6, free, erect, biseriately valvate, oblong-linear, ascending, longer than the sepals, somewhat fleshy, concave within at base, biglandular on the margins. Stamens numerous in the staminate flowers, fewer in the bisexual flowers; connective dilated and disk-shaped above the anther locules; anthers not locellate. Carpels few, pilose; ovules 6--9. Monocarps free, sessile, thick-walled. Seeds 3--8 per monocarp.

Amazonian Venezuela, Brazil, and Peru; 3 species, 1 in Venezuela.

Diclinanona calycina (Diels) R.E. Fr., Acta Horti Berg. 12: 4. 1934. ---Xylopia calycina Diels, Notizbl. Bot. Gart. Berlin-Dahlem 10: 175. 1927.

Diclinanona calycina var. macrophylla R.E. Fr., Kongl. Svenska Vetenskapsakad. Handl. ser. 3, 24(10): 13. 1948.

Tree 6--25 m; leaves abruptly long-caudate; flowers with erect, rufous-gray or golden-yellow, sericeous petals; monocarps 2--2.5 cm long, seeds to 2 cm long. Evergreen lowland forests, ca. 100 m; Amazonas (Caño Caname, near San Carlos de Río Negro). Peru, Brazil. Fig. 359.

Scientific Comments:
Paul Berry (peberry@facstaff.wisc.edu) or Kay Yatskievych (kay.yatskievych@mobot.org).

 
 
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