二列瓦理棕 er lie wa li zong

Didymosperma distichum (T. Anderson) J. D. Hooker; Wallichia yomae Kurz.

Stems solitary, to 9 m tall, 15-25 cm in diam. Leaves arranged in 1 or a few planes; petioles 0.5-1.5 m; rachis 1.8-3.5 m; pinnae 45-73 per side of rachis, linear or linear-lanceolate, shallowly lobed, irregularly arranged in clusters of 3-8 pinnae, spreading in different planes; middle pinnae 56-80 × 5-8 cm. Inflorescences unisexual, male and female borne on same stem, female terminal and male lateral; male inflorescences to 1.2 m, pendulous; rachillae to over 1000, to 30 cm; male flowers to 10 mm; stamens 8-15; female inflorescences to 1 m, pendulous; rachillae 40-50, 30-60 cm. Fruits reddish brown, ellipsoid, to 2.2 × 1.5 cm.

Lowland to montane rain forests, especially in rocky places on steep slopes, often in disturbed areas; below 1200 m. Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Thailand].

The sago extracted from the pith of the stems is eaten in times of famine.