BOTANY WITH BASICS OF HYDROBOTANY (AQUATIC PLANTS OF UKRAINE) - B.Ye. Yakubenko - 2011

X. SEED PLANTS

Order Butomales

These are perennial herbs with a creeping rhizome. Leaves are alternate, linear, or triangular with an expanded sheath at the base. Flowers are borne in axillary umbel-like inflorescences surrounded by an involucre; they are bisexual, actinomorphic, trimerous, and have a double perianth. There are 6 or 9 stamens arranged in two whorls; the gynoecium consists of 6 carpels, and the fruit is an aggregate follicle. This is a monotypic order comprising a single family, Butomaceae.

Last update: 07/08/2026

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