Iryanthera tricornis 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 tricornis Ducke

  • Description

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    Species Description - Tall tree, up to 30 m. in height; branchlets rugose, slender; petioles shallowly canaliculate, rugose, narrowly winged distally, 1-2 mm. in diameter, soon glabrous and nigrescent, 7-12 mm. long; leaf blades thin coriaceous, nearly smooth on both surfaces, usually shining above and dull beneath, elliptic or obovate-elliptic, 8-16 cm. long, 3-6.5 cm. broad obtuse or acute at base, rounded or obtusely cuspidate at apex, the costa raised above, the secondary nerves 8-11 per side, spreading, raised or nearly plane on both surfaces, inconspicuously anastomosing near margins, the veinlets immersed; staminate inflorescences 3-9 cm. long, fasciculate-racemose or narrowly paniculate (lateral branches often suppressed, not more than 3 mm. long), ferruginous-puberulent on all exterior surfaces, the rachis slender, the fascicles alternate, 5-13 per infloreseence; flowers 3-10 per fascicle, the pedicels slender, up to 3 mm. long, bracteolate at summit (bracteole membranous, one-sided, ovate, rounded, 1.5-2 mm. long); perianth cupuliform, thin carnose, about 2.5 mm. long, 3-lobed more than one-half its total length, the lobes ovate-deltoid, obtuse or subacute, often thickened at apex; androecium about 0.8 mm. long, the filament column carnose, nearly as broad as long, the anthers 0.3-0.4 mm. long, dorsally adnate to carnose glandular fused connectives; pistillate inflorescences more compact and more

  • Discussion

    Type locality: Fonteboa, Rio Solimoes, Amazonas, Brazil

  • Distribution

    Amazonian Brazil, thus far known from the basins

    Brazil South America|