MISCELLANEOUS
 SEX 
  DIOECIOUS
Atriplex × hulmeana
Flixweed
Asparagus (Garden)
Bay
Bog Myrtle
Broom (Butcher's)
Bryony (Black)
Bryony (White)
Buck's-beard
Buckthorn (Purging)
Buckthorn (Sea)
Butterbur
Butterbur (Giant)
Butterbur (White)
Buttonweed
Campion (Bladder)
Campion (Red)
Campion (White)
Cinquefoil (Shrubby)
Cloudberry
Cornsalad (Broad-Fruited)
Cornsalad (Common)
Cornsalad (Keeled-Fruited)
Cornsalad (Hairy-Fruited)
Cornsalad (Narrow-Fruited)
Crowberry
Currant (Mountain)
Dog-Rose (Northern)
Everlasting (Mountain)
Everlasting (Pearly)
Frogbit
Hemp
Holly (Highclere) [Tree]
Holly [Tree]
Hop
Hornbeam
Ivy (Poison)
Juniper (Common)
Knotweed (Giant)
Laurel (Spotted)
Mercury (Annual)
Mercury (Dog's)
Mistletoe
Monkey-Puzzle [Tree]
Nettle (Fen)
Nettle (Stinging)
Orache (Babington's)
Orache (Common)
Orache (Grass-Leaved)
Orache (Kattegat)
Orache (Long-Stalked)
Orache (Spear-Leaved)
Palm (Chusan)
Parrot's Feather
Plantain (Buck's-horn)
Roseroot
Sandwort (Sea)
Saw-Wort
Saxifrage (Meadow)
Scabious (Devil's-bit)
Sorrel (Common)
Sorrel (Sheep's)
Valerian (Marsh)
Water-Soldier
Waterweed (Curly)
Waterweed (Large-Flowered)
Waterweed (Nuttall's)
Willow (Creeping)
Willow (Dwarf)
Willow (Goat)
Willow (Grey)
Yew
Honewort (the only dioecious umbellifer)
Hairless Leptinella
Buckthorn aka Purging Buckthorn (but not Alder Buckthorn)
All Willows
Ash Trees
Box Elder
Acer (Sycamore/Maple/etc)
Tree of Heaven
Smoke Bush (Cotinus)
Honey Locust (Gleditsia)
Junipers
Poplar Trees (Populus - Poplar / Aspen)
Bayberry (Myrica)
Podocarpus spp.
Yew Trees (Taxus)
Prickly Ash (Zanthophylum)
Hemp (Cannabis)
Dioecious Amaranth
Dioecious Sedge
Tree Groundsel (Baccaris halimifolia)
Katsura (Cerciphyllum japonicum
Maidenhair Tree (Ginko biloba)
Date (Phoenix dactylifera)
Sedges
Thistle (Creeping) [normally]
Spinach (Spinacia oleracea)
Yams
  MONOECIOUS
Alder
Amaranth (Green)
Amaranth (Powell's)
Arrowhead
Atriplex × hulmeana
Bulrush
Bulrush (Lesser)
Bur-reed (Branched)
Bur-reed (Unbranched)
Chestnut (Sweet)
Cocklebur (Rough)
Cypress (Lawson's)
Fir (Korean)
Hemlock (Western)
Hornwort (Rigid)
Larch (Dahurian)
Larch (European)
Larch (Japanese)
Orache (Babington's)
Mind-Your-Own-Business
Nettle (Roman)
Nettle (Small)
Oak (Pedunculate)
Orache (Common)
Orache (Kattegat)
Orache (Long-Stalked)
Orache (Spear-Leaved)
Pigweed (White)
Prince's-Feather
Purslane (Sea)
Ragweed
Sedge (Cyperus)
Sedge (False Fox)
Sedge (Glaucous)
Sedge (Long-Bracted)
Sedge (Pill)
Sedge (Remote)
Sedge (Star)
Sedge (Tawny)
Spruce (Brewer)
Spurge (Broad-Leaved)
Spurge (Caper)
Spurge (Cypress)
Spurge (Dwarf)
Spurge (Mediterranean)
Spurge (Petty)
Spurge (Portland)
Spurge (Sea)
Spurge (Spotted)
Spurge (Sun)
Spurge (Turkish Wood)
Spurge (Twiggy)
Spurge (Upright)
Water-Starwort (Common)
Arrowheads
Abies - Fir
Alnus - Alder
Betula - Birch
Carpinus - Hornbeam, Ironwood
Castanea - Sweet Chestnut
Carya- Hickory
Cedrus - Cedar
Chamaecyparis - False Cypress
Corylus - Hazelnut
Cryptomeria
Cucumber
Cunninghamia
Cupressus - Cypress
Fagus - Beech
Ficus - Fig
Juglans - Walnut
Keteleeria
Larix - Larch
Melon
Ostrya - Hop Hornbeam
Picea - Spruce
Pinus - Pine
Platanus - Sycamore, Plane Tree
Pseudolarix - Golden Larch
Pseudotsuga - Douglas Fir
Quercus - Oak
Sciadopitys - Umbrella Pine
Sequoia - Coastal Redwood
Sequoiadendron - Giant Redwood
Annual Sea-purslane/Pedunculate Sea-purslane
Taxodium - Bald Cypress
Thuja - Arborvitae
Tsuga- Hemlock
Typha - Bulrushes
Walnut
Sedges
  MALE
Astrantia
Elm (Wych)
Giant-Rhubarb (Brazilian)
Giant-Rhubarb (Chilean)
Masterwort
Sweet Cicely
Water-Milfoil (Alternate)
Water-Milfoil (Spiked)
Water-Milfoil (Whorled)
Heliotrope (Winter)
Japanese Knotweed (the pure non-hybrid)
  FEMALE
Campion (Bladder)
Cudweed (Jersey)
Elm (Wych)
Fleabane (Guernsey)
Giant-Rhubarb (Brazilian)
Giant-Rhubarb (Chilean)
Heliotrope (Winter)
Pellitory-of-the-Wall
Plantain (Buck's-horn)
Saxifrage (Meadow)
Scabious (Devil's-bit)
Sea-blite (Annual)
Sea-Blite (Shrubby)
Water-Milfoil (Alternate)
Water-Milfoil (Spiked)
Water-Milfoil (Whorled)
Japanese Knotweed (hybrid)
  OR  UNISEXUAL
Atriplex × hulmeana
Orache (Babington's)
Orache (Common)
Orache (Kattegat)
Orache (Long-Stalked)
Orache (Spear-Leaved)
Sedge (Tawny)
Sedge (Long-Bracted)
  BISEXUAL
LIST VERY INCOMPLETE
most plants are bisexual!
Alison (Sweet)
Alkanet (Green)
Anemone (Poppy)
Anemone (Wood)
Apple-of-Peru
Arabis (Garden)
Aralia (Japanese)
Arrow-grass (Marsh)
Arrow-grass (Sea)
Astrantia
Avens (Mountain)
Avens (Large-Leaved)
Avens (Water)
Avens (Wood)
Baby-blue-eyes
Balm (Bastard)
Balsam (Himalayan)
Barberry
Barberry (Darwin's)
Barberry (Chinese)
Barberry (Thunberg's)
Bearberry
Bearberry (Arctic)
Beard-Grass (Annual)
Bedstraw (Heath)
Bellflower (Nettle-Leaved)
Bent (Water)
Bindweed (Copse)
Brooklime
Buckthorn (Alder)
Bugloss (Viper's)
Bugseed
Bur-Marigold (Nodding)
Buttercup (Small-Flowered)
Butterwort (Common)
Butterwort (Great)
Cabbage (Bastard)
Candytuft (Garden)
Candytuft (Perennial)
Candytuft (Wild)
Catchfly (Alpine)
Catchfly (Nottingham)
Chickweed (Common)
Chickweed (Greater)
Chickweed (Lesser)
Chickweed (Upright)
Chickweed (Water)
Clover (Knotted)
Clover (Suffocated)
Cock's-Eggs
Columbine
Coral-Necklace
Cornel (Dwarf)
Cornsalad (Broad-Fruited)
Cornsalad (Common)
Cornsalad (Hairy-Fruited)
Cornsalad (Keeled-Fruited)
Cornsalad (Narrow-Fruited)
Cotoneaster (Welsh)
Couch (Sand)
Cowslip
Crane's-bill (Bloody)
Crane's-bill (Meadow)
Crane's-bill (Round-Leaved)
Cudweed (Broad-Leaved)
Cudweed (Cape)
Cudweed (Common)
Cudweed (Heath)
Cudweed (Highland)
Cudweed (Jersey)
Cudweed (Red-Tipped)
Cudweed (Small)
Currant (Flowering)
Currant (Red)
Daisy
Dead-Nettle (White)
Deergrass (Northern)
Dittander
Dodder (Greater)
Dropwort
Elm (Wych)
Fleabane (Guernsey)
Forget-me-Not (Changing)
Forget-me-Not (Great)
Flat-Sedge (Saltmarsh)
Fleabane (Tall)
Fleabane (Small)
Foxglove
Fragrant-Orchid (Chalk)
Fragrant-Orchid (Heath)
Fragrant-Orchid (Marsh)
Fuchsia (Hedge)
Goat's-Rue
Gorse (Spanish)
Giant-Rhubarb (Brazilian)
Giant-Rhubarb (Chilean)
Gentian (Willow)
Glasswort (Common)
Glasswort (Long-Spiked)
Glasswort (Purple)
Glasswort (Yellow)
Golden-saxifrage (Alternate-leaved)
Golden-saxifrage (Opposite-leaved)
Gooseberry
Goosefoot (Red)
Grass-of-Parnassus
Gromwell (Field)
Gromwell (Purple)
Hawkbit (Lesser)
Heath (Cornish)
Heather
Heather (Bell)
Heath (Cross-Leaved)
Heath (Darley Dale)
Heath (Dorset)
Hellebore (Green)
Hemp-Nettle (Large-Flowered)
Henbane
Himalayan Giant
Hogweed (Giant)
Honesty
Honesty (Perennial)
Hornwort (Rigid)
Hound's-tongue
Hound's-Tongue (Green)
Jacob's-Ladder
Kangaroo-Apple
Knapweed (Greater)
Knawel (Annual)
Ladys Smock
Leopard's-Bane
Liquorice
Lords-and-Ladies
Lords-and-Ladies (Italian)
Lovage
Madder (Wild)
Mallow (Chinese)
Mallow (Dwarf)
Masterwort
Mignonette (Wild)
Milkwort (Chalk)
Milkwort (Common)
Milkwort (Dwarf)
Milkwort (Heath)
Mint (Tall)
Monkswort (Yellow)
Moschatel
Motherwort
Mouse-Ear (Arctic)
Mousetail
Mullein (Moth)
Mustard (Black)
Mustard (Hedge)
Mustard (Hoary)
Mustard (Treacle)
Orchid (Burnt-Tip)
Orchid (Coralroot)
Oregon-Grape
Parsley (Stone)
Pearlwort (Annual)
Pearlwort (Procumbent)
Pellitory-of-the-Wall
Pepperwort (Least)
Pepperwort (Narrow-Leaved)
Pepperwort (Smith's)
Persicaria (Pink-Headed)
Pink (Carthusian)
Pink-Sorrel (Pale)
Plantain (Buck's-horn)
Plantain (Greater)
Pondweed (Bog)
Pondweed (Curled)
Pondweed (Fennel)
Pondweed (Perfoliate)
Purslane (Common)
Quamash
Ramping-Fumitory (Common)
Ramping-Fumitory (Martin's)
Rock-cress (Hairy)
Rock-Cress (Northern)
Ramping-Fumitory (Western)
Rock-Rose (Common)
Rock-Rose (Hoary)
Rose (Burnet)
Rowan (Common)
Rue
Rush (Sea)
Safflower
Safflower (Downy)
Salmonberry
Sandwort (Three-Nerved)
Scabious (Giant)
Sea-blite (Annual)
Sea-blite (Shrubby)
Selfheal
Service Tree (Bastard)
Silverweed
Snout (Weasel's)
Snowdrop (Greater)
Sorrel (Mountain)
Sorrel (Pink)
Sowbread
Spanish Dagger
Speedwell (Spiked)
Spikenard (Ploughman's)
Sea-Spurrey (Greater)
Spinach (New Zealand)
Spurrey (Sand)
Star-of-Bethlehem (Drooping)
St John's-Wort (Imperforate)
St John's-Wort (Perforate)
St John's-Wort (Square-Stalked)
Stitchwort (Marsh)
Stonecrop (White)
Stork's-bill (Common)
Stork's-bill (Musk)
Stork's-bill (Sea)
Stork's-bill (Sticky)
Sweet Cicely
Sweet-Grass (Reed)
Swine-Cress
Thistle (Carline)
Thistle (Spear)
Vetch (Spring)
Viper's-Grass
Tare (Hairy)
Teaplant (Duke-of-Argyll's)
Teasel (Small)
Thistle (Musk)
Thorn-Apple
Tutsan
Tree-Mallow (Garden)
Trefoil (Bird's-foot)
Vetch (Kidney)
Vine (Grape)
Wall-Flower
Water-Milfoil (Alternate)
Water-Milfoil (Spiked)
Water-Milfoil (Whorled)
Water-Milfoil (Spiked)
Water-Pepper (Least)
Waterwort (Six-Stamened)
Water-Speedwell (Blue)
Water-Speedwell (Pink)
Whitlowgrass (Hoary)
Willowherb (Great)
Willowherb (Hoary)
Woad
Wood Sage
Yellow-Cress (Marsh)
Yellow-wort
  STERILE
Adder's-tongue
Brome (Barren)
Candytuft (Garden)
Catmint (Garden)
Day-Lily (Orange)
Fern (Parsley)
Heliotrope (Winter)
Mint (Apple)
Mint (Sharp-Toothed)
Mint (Tall)
Mint (Whorled)
Monkeyflower (Coppery)
Monkeyflower (Hybrid)
Peppermint
Pigmyweed (New-Zealand)
Speedwell (Slender)
Japanese Knotweed
Canadian Waterweed
many are hybrids (but not all)
  (Pin/Thrum) HETEROSTYLOUS
Bogbean
Buckwheat
Flax (Cultivated)
Loosestrife (Purple)
Lungwort
Primrose
Primrose (Bird's-eye)
Violet (Water)
Water-Lily (Fringed)
Buttercup (Bermuda)
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