Unionidae are dioecious, meaning they have separate sexes.    From Wordnik.com.  [Freshwater mussels in North America - factors affecting their endangerment and extinction] Reference

Ginkgos are dioecious, meaning they are found with two separate sexes (either female or male).    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

But unlike most tree species common in the U.S., the ginkgo is dioecious, meaning trees are male or female.    From Wordnik.com.  [Laudator Temporis Acti] Reference

A perennial littoral dioecious grass forming bushes.    From Wordnik.com.  [A Handbook of Some South Indian Grasses] Reference

FLOWERS: Inflorescences dioecious, borne in leaf axils.    From Wordnik.com.  [Chapter 7] Reference

= Change from the dioecious to the monoecious condition.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

Description: A prickly twining perennial, dioecious plant.    From Wordnik.com.  [Chapter 7] Reference

The tree is dioecious, there being separate male and female trees.    From Wordnik.com.  [Studies of Trees] Reference

Like many of the members of this family, the species is dioecious.    From Wordnik.com.  [Chapter 7] Reference

Most species are hermaphroditic, 9% are dioecious, and 9% are monoecious.    From Wordnik.com.  [Juan Fernández Islands temperate forests] Reference

It is dioecious; individual trees are carry either male or female flowers.    From Wordnik.com.  [Chapter 8] Reference

The tree is dioecious, bearing male catkins on one plant, female on another.    From Wordnik.com.  [Scientific American Supplement, No. 360, November 25, 1882] Reference

Prolification, Substitutions, &c. = Change from the monoecious to the dioecious condition.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

The papaya is an interesting example of a tree that can be perfect, monoecious, or dioecious.    From Wordnik.com.  [5. How plants live and grow] Reference

In dioecious species (separate-sexed) there are separate male trees and separate female ones.    From Wordnik.com.  [pollen pollen, uber alles...] Reference

They are generally dioecious twining climbers, often prickly and arising from a tuberous rootstock.    From Wordnik.com.  [Chapter 7] Reference

C. glauca is dioecious; male and female trees occur in approximately 1: 1 ratios in natural stands.    From Wordnik.com.  [Chapter 20] Reference

In 1812, Konrad Sprengel first wrote about dioecious (separate-sexed) plants that produce pollen abundantly.    From Wordnik.com.  [Amid the heat wave, gardeners still have questions] Reference

This is a stout, rigid, much branched, gregarious and dioecious grass, flourishing in sand on the sea coast.    From Wordnik.com.  [A Handbook of Some South Indian Grasses] Reference

The root-leaves are somewhat heart-shaped, thick, and fleshy; stem simple, with verticillate branches; flower dioecious.    From Wordnik.com.  [The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use.] Reference

The plants are dioecious and grow in a circular pattern.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

In our British dioecious Viscum I suppose it must be necessary.    From Wordnik.com.  [More Letters of Charles Darwin — Volume 1] Reference

Flowers yellowish-green, dioecious, growing in axillary racemes.    From Wordnik.com.  [The Medicinal Plants of the Philippines] Reference

Flowers dioecious, the male ones in panicles, the female solitary.    From Wordnik.com.  [The Medicinal Plants of the Philippines] Reference

Page 75: "dioecious pyrus" was originally typeset with an oe ligature.    From Wordnik.com.  [The Apple-Tree The Open Country Books—No. 1] Reference

The animals, like all the vertebrata, are dioecious, i.e., male or female.    From Wordnik.com.  [Text Book of Biology, Part 1: Vertebrata] Reference

Hops are a dioecious plant with sterns which twine in a clockwise direction.    From Wordnik.com.  [Article Source] Reference

Date Palms have differently sexed trees, which means that they are dioecious.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

The northern wax myrtle and the Pacific wax myrtle may be dioecious or monecious.    From Wordnik.com.  [Homepage] Reference

Willows are dioecious, which means that male and female flowers are on separate plants.    From Wordnik.com.  [Travel news, travel guides and reviews | guardian.co.uk] Reference

The trees are typically dioecious which means that there are separate male and female trees.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Knowing what plants are monoecious or dioecious is difficult - even for the trained botanist.    From Wordnik.com.  [NYT > Opinion]

The ginkgo trees are dioecious, with separate sexes, some trees being female and others being male.    From Wordnik.com.  [Wil's Ebay E-Store] Reference