Solitary or clustered dioecious palm, with stems short and subterranean,o r prostratea nd up to 1.5 m long and 25-35 cm in diameter, usually decaying at the older portions. Leaves 8-20 erect or arching; sheath l-1.7 m long, strongly fibrous, most of it appearing like the petiole; petiole cylindrical, l-2.4 m long, 2-2.5 cm in diameter, green; rachis 3.3-4 m long, with 40-62 pinnae; middle pinnae opposite, to 85 cm long and 5 cm wide, glabrous, with a prominent submarginal vein on either side of the midvein. Inflorescences interfoliar, the staminate up to 1.4 m long; peduncle 30-75 cm; peduncular bract 35-50 cm long; rachis 3O-92 cm long; rachillae 45-90, each with 6-9 flowers 0.5-3 cm long, the proximal ones larger and with more stamens; perianth obscure, hidden by the enlarged receptacle, the latter making the most conspicuous part of the flower; receptacle prismatic, to 1.5 cm long, with a small, central pistillode; stamens 300-1321; filaments 0.1-0.9 mm long; anthers 0.5-1.7 mm long. Pistillate inflorescence with peduncle to 30 cm long; peduncular bt'act 15*30 cm long; pistillate flowers 6-10 densely arranged in a head on a short rachis 1-2.5 cm long, each flower up to 25 cm long, with 7-10 narrow tepals to 10 cm long; ovary with 6-10 locules; style to 7 cm long; stigmas to 5 cm long. Infructescence2O-25 cm diameter, with 3-10 fruits. Fruit depressed-globose1,0 -12 cm diameter, with woody spiny projections to L cm long; seeds 6-10, wedge-shaped, with two flat sides, the distal surface convex, 4.5-5 cm long, 3-4 cm wide,2.2-3 cm along the tangential face. 
Ammandra dasyneura (Burret) Barfod
Phytelephas dasyneura Burret
Phytelephas decasperma (O.F.Cook) Dahlgren
Cold Hardiness Zone (USDA) 10a
Ammandra is not common in cultivation outside its natural range but when grown requires wet and warm conditions resembling the rain forest and will not tolerate full sun when young. It also prefers free-draining, highly organic soil. In Colombia, their large, strong petioles are commonly woven into baskets and other thatched goods, while the large white seeds, commonly called "vegetable ivory", are carved into buttons and trinkets.
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