Guarumo poludo Dioecious tree, to 15 m tall; branches stout, 4-5 cm diam at apex. Petioles gray-hirtellous, 30-75 cm long, the brown velutinous trichomes interspersed with longer white trichomes; stipules ca 7-9 cm long; mature leaves to ca 90 cm wide, usually divided less than halfway to center, dark green and scabridulous above, paler and subarachnoid-puberulent below; lobes 9-13, broadly rounded at apex, not narrowed at base. Staminate spathes carrot-shaped before anthesis, pendent, reddish-brown, densely hirsute, 9-12 cm long, the spadices in clusters of 16-50, to 13 cm long and 2-3 mm diam, the stipes 1-2 cm long, gray-hirtellous, the common peduncles 7-12 cm long, densely hirsute; perianth tubular; stamens 2. Pistillate spathes reddish, 2-ribbed, the spadices in clusters of 6-12, 8-9 cm long and 5 mm diam at anthesis, 10-12 cm long and ca 1 cm diam in fruit, the stipes hirtellous, to 1 cm long, the common peduncles greatly accrescent in fruit, 56-80 cm long, moderately covered with sharp and stiff, somewhat urticating trichomes. Achenes tan, ellipsoid to narrowly ovate, smooth when fresh, ca 2.3 mm long, to 1.3 mm wide. Croat 15248a. Apparently rare; known only from the vicinity of the Laboratory Clearing. In the Canal Zone, the plant is uncommon, growing as isolated plants in open areas. Both of the pistillate plants growing in the Laboratory Clearing set an abundance of fruit. Flowers at the beginning of the rainy season (April to June). The fruits mature from July to September (sometimes November). Known only from Panama, from tropical moist forest on both slopes of the Canal Zone and in Darien and from premontane moist forest on the Pacific slope of the Canal Zone (Fort Kobbe). See Fig. 195.