Iryanthera grandis Ducke

  • Authority

    Smith, Albert C. & Wodehouse, R. P. 1938. The American species of Myristicaceae. Brittonia. 2: 393-527. f. 1-9.

  • Family

    Myristicaceae

  • Scientific Name

    Iryanthera grandis Ducke

  • Description

    Species Description - Tall tree, 30 m. or more in height, the trunk sometimes more than 1 m. in diameter, the branchlets rugose, slender, glabrous, often nigrescent; petioles shallowly canaliculate, rugose, glabrous, 1.5-3 mm. in diameter, 10-22 mm. long; leaf blades coriaceous, nearly smooth and dull on both surfaces, oblong, elliptic-oblong, or obovate-oblong, 18-25 cm. long, 5-8 cm. broad, obtuse or rounded at base, obtuse or obtusely cuspidate at apex, the costa raised above, the secondary nerves 15-18 per side, arcuate-spreading, slightly impressed or raised above, raised beneath, inconspicuously anastomosing near margins, the veinlets usually immersed; staminate inflorescences 3-15 cm. long, fasciculateracemose or narrowly paniculate (lateral branches not more than 4 mm. long, often suppressed), densely ferruginous-puberulent on all exterior surfaces, the rachis stout, often curved, the fascicles numerous, alternate or subopposite; flowers 6-10 per fascicle, the pedicels slender, up to 2 mm. long, bracteolate at summit (bracteole membranous, one-sided, oblong, less than 1 mm. long); perianth subrotate, carnose, about 1.5 mm. long, 3-lobed nearly to base, the lobes oblongdeltoid, obtuse; androecium subglobose, sharply contracted at base, about 0.4 mm. long and slightly broader, the filament column thick carnose, the anthers about 0.2 mm. long, dorsally adnate to carnose

  • Discussion

    Native names: Punan, Ucuuba vermelha.

    The fruit of Krukoff 1391 was erroneously described by me'2 as of I. juruensis, a species not of this relationship. I. grandis appears to have the largest fruit with the thickest pericarp to be found in the genus The staminate flowers are unusually small, and the minute squat androecium is very distinctive

  • Distribution

    Amazonian Brazil, thus far known from the Madeira

    Brazil South America|