Plant erect, 30 cm. or more high, essentially glabrous throughout; leaves elliptic-lanceolate, 8-20 cm. long, 3-7 cm. wide, caudate-acuminate, acute at base, sometimes suboblique, serrate, densely covered with fusiform and punctiform cystoliths, slightly silvery-lustrous and punctate beneath, the petioles up to 7 cm. long; plants dioecious; staminate flowers densely congested in globose, sessile clusters, the perianth 1.5-2 mm. long including tips about half as long; pistillate flowers in much-branched cymes, shorter than the petioles, the achenes about 0.6 mm. long, black, minutely papillose.
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