A New Species of Boehmeria (Urticaceae), B. tosaensis, from Kochi Prefecture, Shikoku, Japan

Abstract

A new species of Boehmeria, B. tosaensis, is described from Kochi Prefecture, Shikoku, Japan. The species is similar to B. gigantea Satake in having paniculate male inflorescences at the axils in the lower part of stems and ovate leaves, but differs in having less hairy stems and leaves and the smaller, thinner leaves with truncate to roundly truncate base and long acuminate apex. Furthermore, B. tosaensis has narrowly lanceolate bracts in male inflorescences. The chromosome number is 2n = 42. The pollen stainability is over 96.7 %.