Plant Identification Guide

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Created by:

jagreek  on June 12, 2011

Subjects:

botany, horticulture, science, earth science

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Plant Identification Guide

Nymphea (Nymphaeceae)

Water-lily Family
Aquatic Herbs
Chordate leaves floating or immersed leaves with long petiole.
Folicle or Berry
Floral Formula: *,3-∞, 3-∞, ∞, 5-∞; berry or follicleN
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Nymphea (Nymphaeceae)
Water-lily Family
Aquatic Herbs
Chordate leaves floating or immersed leaves with long petiole.
Folicle or Berry
Floral Formula: *,3-∞, 3-∞, ∞, 5-∞; berry or follicleN
Asarum (Aristolochiaceae)
Herbs woody vines
Alternate simple palmately veined leaves
Floral Formula: *, 3 (connate/fused=circled), 8-∞, 3-6 (inferior ovary=line above); capsule
Magnolia (Magnoliaceae)
Deciduous Tree
Waxy leaf covering
Floral Formula: *, 9-15 tepals, ∞, ∞(underline=superior ovary); follicle or samara
Ranunculus (Ranunculaceae)
Mostly herbs, few small shrubs or woody vines
Alternate w/ sheathing bases
Actinomorphic or zygomorphic solitary or in cymose inflorescences, racemes or panicles. 3-X sepals. 0-4 petals.
Perianth often not differentiated into sepals and petals. 4 stamens, spirally inserted. Anthers dehiscing by longitudinal slits
Superior Ovary 3-4 carpels, apocarpous, spirally arranged
Placentation basal or marginal
Follicle, achene, berry, capsule
Mahonia (Berberidaceae)
Perennial herbs or shrubs
Plants often with yellow colored wood due to the presence of the alkaloid berberine
Simple pinnately compound or palmately lobed leaves
Synoecious
Actinomorphic Symmetry 4-4 sepals. 4-4 petals. 3-6 stamens
Perianth members sometimes in whorls of 3
Anthers often opening by flaps (valvate) the pollen remaining attached to the valves
Superior ovary, 1 carpel, placentation marginal or basal
Berry or follicle
Sanguinaria (Papaveraceae)
Annual or perennial herbs (occasionally shrubs but rarely trees)
Often with colored or milky latex
Alternate leaves w/ entire or divided margins
Exstipulate, synoecious
Actinomorphic
2-3 sepals, 4-12 petals, often with a crumpled appearance, 4 stamens
Superior ovary
2-X carpels, syncarpous placentation parietal
capsule opening by valves or pores
Proteaceae
Trees bark deciduous and peeling
Alternate simple palmately lobed or veined leaves
Dilated petiole base concealing the bud
Monoecious
Spherical heads of unisexual flowers
Actinomorphic
3-8 sepals, 3-8 petals, 3-8 stamens
Superior ovary
6-9 carpels
one locule, placentation apical
Dense spherical heads of achenes with long bristles
(Araceae)
Herbs in the temperate zone, typically of wet sites; leaves leathery, often pinnately veined; inflorescence a
spadix surrounded by a spathe. *, 0 or 2-3, 0 or 2-3, 4-10, 2-4 gynoecium syncarpous, ovary sometimes embedded in
the spadix and inferior
Sagittaria (Alismataceae)
Marsh and aquatic herbs, sometimes with arrowhead-shaped leaves, with flowers having 3 green sepals
and 3 white petals; gynoecium apocarpous, usually with many carpels. *, 3, 3, 6-4, 6-4
Lilium (Liliaceae)
Perennial herbs from bulbs, rhizomes or corms; leaves linear, sometimes sword-shaped and fibrous; perianth
6 parted and conspicuous, 6 (3) stamens; ovary syncarpous, superior or inferior of 3 carpels; fruit a capsule or berry. *,
3, 3, 6, ()3))) or (3)
Iris (Iridaceae)
Herbs with equitant leaves, petaloid perianth, 3 stamens; ovary of 3 carpels (with petaloid styles in Iris ),
inferior. *, 3, 3, 3, ()3))) [Crocus : perianth united below into a tube]
(Orchidaceae)
Perennial herbs, often epiphytic; leaves 2-ranked; trimerous zygomorphic flowers with a labellum,
pollinia, gynandrium and an inferior ovary. +, 3, 2+1, 1-2, ()3))) androecium and gynoecium fused into gynandrium
(Arecaceae)
Medium to tall trees with well-developed unbranched trunks; leaves large and fan-shaped or
pinnately compound with conspicuous sheathing bases; inflorescence a panicle enclosed by a spathe; flowers small,
trimerous. *, 3, 3, 6, 3 or (3)
Tradescantia (Commelinaceae)
Herbs with succulent, mucilaginous stems, prominent closed sheaths, 3 green sepals, 3 often blue
petals, 6 stamens with hairy filaments. *, 3, 3, 6, (3)
Typha (Typhaceae)
Large marsh herbs with 2-ranked linear leaves and a brownish compact spike of unisexual flowers.
staminate: ,X, 0, 2-5, 0; pistillate: , X, 0, 0, 1
Luzula (Juncaceae)
Grass-like herbs of wet or damp sites; leaves basal and tufted; flowers reduced, inconspicuous, 3-merous of
sepaloid tepals; fruit a capsule.
Poa (Poaceae)
Herbs with linear 2- ranked leaves and round hollow stems; leaves with ligules and open sheaths; flowers
greatly reduced, enclosed in two bracts, arranged in spiklets. This family is most commonly confused with the
Cyperaceae
(Zingiberaceae)
Large aromatic herbs with distichous, ligulate, leaves; flowers zygomorphic with tubular calyx, petals
united into floral tube, 1 fertile stamen and 3 staminodes, ovary inferior. +, (3), |(3), 1+4|, ()3))) floral tube unites all
parts except gynoecium and calyx, two lateral petaloid staminodes and one labellum
Musa (Musaceae)
Large tree-like herbs with pinnately veined leaves than often tear; flowers unisexual, zygomorphic, 3-
merous, ovary inferior. Fruit a leathery berry more or less resembling the banana of commerce. Staminate: +, 3, 2+1,
5+1, 0; Pistillate: +, 3, 2+1, 0, ()3))
Cyprus (Cyperaceae)
Grass-like herbs with solid, 3-sided stem, 3-ranked leaves and closed leaf sheaths; reduced wind-pollinated
flowers subtended by a single bract.
Polygonium (Polygonaceae)
Herbs (sometimes shrubs or trees) stems with swollen nodes Alternate, rarely opposite leaves often with an ocrea (a membranous sheath that forms a collar around the node)
Plants synoecious, monecious or dioecious
Actinomorphic. Perianth. Calyx petaloid
3-6 sepals (often called tepals) petals absent stamens 3-9
Superior ovary 3 carpels one locule one ovule basal placentation
Lens-shaped or triangular achene, subtended by a persistent perianth
Saxifraga (Saxifragaceae)
Herbs with swollen nodes, ocrea or involucrate heads, petaloid calyx and a lens shaped or triangular
achene, often black; 3 carpels with 1 locule and 1 ovule. There are two common floral formulas in this family: *, 3+3, 0,
3-9, (3) or *, 5, 0, 5-8, (3)
Crassulaceae
Exstipulate, succulent herbs and subshrubs
4-5 merous flowers, carpels free but connate at base, each
subtended by a glandular scale.
*, 4-5, 4-5, 8-10, 4-5 (carpels basally connate)
Hamamelis (Hamamelidaceae)
Woody plants with stellate hairs, bicarpellate gynoecium with divergent apices and a woody or
leathery capsule.
*, 4-5, 4-5, 4-5, (2) sepals connate at base, carpels connate at base
Claytonia (Portulacaceae)
Herbs
Feshy leaves, 2 sepals,
Bsal placentation and a circumscissile capsule.
*, 2 or (2), 4-6, 4-4,(2-8)
Stellaria (Caryophyllaceae)
Herbs
Oposite leaves connected by a transverse line; leaves simple, entire;
Sollen nodes; petals 5 ut often cleft and appearing as 10;
Fee central placentation; dry, many-seeded capsule opening by teeth or valves. *,(5), 5, 5-10, (2-5)
Cactaceae
Succulent, often spiny herbs (spines in areoles)
Showy flowers with numerous perianth parts, many
stamens and an inferior ovary.
*, X, 4, 4, 2-4, (2)-4)
Dionaea (Droseraceae)
Insectivorous plants
Leaves either covered with sticky glandular hairs or equipped with a sensitive hairs that close the blade to form a trap.
*, (5), 5, 5, 2-3-5
(Cucurbitaceae)
Coarse, tendril bearing vines with often yellow unisexual flowers; ovary inferior,
fruit a pepo. staminate: , 5 (5), 5, 0; pistillate: , 5 (5), 0, 3
Quercus (Fagaceae)
Catkin-bearing trees and shrubs with pinnately lobed leaves,
buds clustered at the
tips of the twigs;
fruit a least partially enclosed by a cupule;
fruit a nut (acorn).
Staminate: *, 4-6, 0, 4-4, 0; Pistillate: 4-6, 0, 0, ()3) ))
Betula (Betulaceae)
Catkin-bearing trees with simple,
serrate leaves; bracteate catkins;
flowers with a bicarpellate inferior ovary. Staminate: *, 0 or 4, 0, 2-20, 0;
Pistillate: *, 0, 0, 0, ()2) ))
Carya (Juglandaceae)
Catkin-bearing trees with pinnately compound leaves.
Staminate: *, 3-6, 0, 3-4, 0;
Pistillate: *, 4, 0, 0, ()2) -3) ))
Brassica (Brassicaceae)
Herbs with an acrid taste (mustard oils);
tetramerous perianth,
6 tetradynamous stamens (4+2),
fruit a silique or silicle. *, 4, 4, 4+2, (2)
Gossypium (Malvaceae)
Herbs and shrubs with stellate pubescence;
leaves palmately lobed and veined;
stamens united by their filaments;
fruit a capsule, less commonly a berry or samara. *, (3-5), 5, (4), (5-8)
Acer (Aceraceae)
Trees and shrubs with opposite palmate lobed and veined leaves (compound in Acer negundo).
Fruits splitting into two samaras.
*, 4-5, 4-5, 4-10, 2 (nectary disk often present)
Phlox (Polemoniaceae)
Polemoniaceae family phlox,
5 sepals fused in tube (unlike carnation),
epipetalous (androecium attached to petals),
single style w/ 3 stigmas
Isotrema (Aristolochiaceae)
Pipevine (Isotrema macrophylla)
Leaves of vegetative shoots up to 40 cm (15 in) long and wide, heart-shaped
Flowers about 3 cm long, strongly curved.
Calyx with a dark purple orifice and a wrinkled reflexed limb.
Fruits capsules about 3 cm (1.2 in) in diameter.
Liriodendron (Magnoliaceae)
Tulip Magnolia, Tulip Poplar, Yellow Poplar, or the Tuliptree
2-2.5 inch long flowers they are similar to a tulip in shape
Can reach 70ft and crown 40-50ft
Magnoliaceae family
Berberis (Berberidaceae)
Long shoots form structure
short shoots about 1-2 in long
leaves on long shoots are non-photosynthetic,
three-spined thorns 3-30 mm long;
bud in the axil of each thorn-leaf with a short shoot with several normal, photosynthetic leaves.
These leaves are 1-10 cm long
Platanus (Platanaceae)
Planes, Plane Trees
Last member of family Platanaceae
90-150 ft tall
flowers are born in balls (globose heads);
possible 3-7 hairy sepals fused at the base,
possible 3-7 Petals which are spatulate.
Liquidambar (Hamamelidaceae)
Drosera (Droseraceae)
Geranium (Geraniaceae)
Euphorbia (Euphorbiaceae)
Viola (Violaceae)
Salix (Salicaceae)
Cercis (Fabaceae)
Pyrus (Rosaceae)
Prunus (Rosaceae)
Spirea (Rosaceae)
Ulmus (Ulmaceae)
Ficus (Moraceae)
Morus (Moraceae)
Hibiscus (Malvaceae)
Tilia (Malvaceae)
Cornus (Cornaceae)
Trees and shrubs, often with opposite leaves, arcuate veins, 4-5 merous flowers, ovary inferior; fruit a
drupe or berry. *, 4-5, 4-5, 4-5, 2)
Rhododendron (Ericaceae)
Woody plants, usually shrubs, with leathery, often evergreen leaves, urceolate or campanulate flowers
with anthers opening by terminal pores. *, (4-5), (4-5), 8-10, (4-5) or (4)-5))
Lycopersicum (Solanaceae)
Herbs or shrubs with alternate leaves; actinomorphic, 5-merous flowers with 5 stamens; fruit a berry or
capsule. *, (5), (5), 5, (2). Note: Can be distinguished from the Scrophulariaceae by the zygomorphic flowers and 4
stamens in the latter family.
Vinca (Apocynaceae)
Herbs, shrubs or small trees with opposite or whorled leaves, milky laytex, 5-merous flowers,
gynoecium of 2 separate carpels, fruit a follicle with comose seeds. * (5), (5), 5, 2 stamen epipetalous
Asclepias (Asclepiadaceae)
Herbs with opposite or whorled leaves, milky latex, 5-merous flowers, corona, pollinia,
translators, corpuscula; fruit a follicle with comose seeds. *, 5, (5), 5, 2 anthers fused to stigma, carpels
fused in upper regions
Forsythia (Oleaceae)
Trees and shrubs with opposite leaves; flowers with 4 sepals and petals, 2 stamen and 2 united carpels. *,
(4), (4), 2, (2)
Fraxinus (Oleaceae)
Trees and shrubs with opposite leaves; flowers with 4 sepals and petals, 2 stamen and 2 united carpels. *,
(4), (4), 2, (2)
Veronica (Scrophulariaceae)
Herbs or shrubs with alternate or opposite leaves; 5-merous zygomorphic flowers, 4 stamens with
sometimes a 5th staminode. +, (5), (5), [2]4[5], (2)
Lamium (Lamiaceae)
Herbs and shrubs with square stems, opposite leaves and a minty aroma; 5-merous zygomorphic flowers,
2-4 stamen, ovary deeply 4-lobed, style gynobasic. +, (5), (5), 2 or 2+2, (2)
Daucus (Apiaceae)
Aromatic herbs with hollow, furrowed stems, compound leaves with sheathing leaf based; 5-merous often
white or yellow flowers in compound umbels; fruit a schizocarp. *, 5, 5, 5, ()2)))
Lonicera (Caprifoliaceae)
Exstipulate shrubs or vines with opposite leaves, 5 (4) merous epigynous flowers and a
multi-carpellate gynoecium. * (+), 5, (5), 5, 2)-8)
Viburnum (Caprifoliaceae)
Exstipulate shrubs or vines with opposite leaves, 5 (4) merous epigynous flowers and a
multi-carpellate gynoecium. * (+), 5, (5), 5, 2)-8)
Taraxicum (Asteraceae)
herbs or shrubs with involucrate heads; flowers small, 5-merous, sympetalous; calyx a pappus, a series of
bristles or scales; stamens 5, united by their anthers; gynoecium bicarpellate, inferior; fruit a single achene. *, X or
(5), (5), 5, ()2))) anthers fused into a tube surrounding style
Narcissus (Liliaceae)
Crocus (Iridaceae)
Orchidaceae
Acer palmatum
Japanese maple
Acer palmatum var. dissectum
Cutleaf Japanese maple
Acer palmatum 'Bloodgood'
Bloodgood Japanese maple
Clerodendrum trichotomum
Peanutbutter bush
Parthenocissus henryana
Silvervain creeper
Parthenocissus quinquefolia
Virginia creeper
Platanus x acerifolia
London plane tree
Rhus typhina 'Laciniata'
Cut leaf staghorn sumac
Acer saccharum
Sugar Maple
Ampelopsis brevipedunculata
Porcelain ampelopsis
Aralia spinosa
Devil's walking stick
Berberis thunbergii
Japanese barberry
Campsis radicans
Common trumpet creeper
Cornus kousa
Kousa dogwood
Fraxinus americana
American ash
Fraxinus pennsylvanica
Green ash
Lagerstroemia indica
Common crapemyrtle
Larix decidua
European larch
Robinia pseudoacacia
Black locust
Acer circinatum
Vine maple
Acer saccharum 'Sentry'
Sentry sugar maple
Cercidiphyllum japonicum
Katsura tree
Euonymus alatus 'Compactus'
Dwarf winged euonymus
Holodiscus discolor
Ocean spray/Arrowwood
Hydrangea macrophylla
Big leaf hydrangea
Hydrangea quercifolia
Oakleaf hydrangea
Koelreuteria paniculata
Goldenrain tree
Parrotia persica
Persian parrotia
Stewartia pseudocamellia
Japanese stewartia
Styrax japonicus
Japanese snowbell
Styrax obassia
Fragrant snowbell
Acer x freemanii autumn blaze
Autumn blaze maple
Acer griseum
Paperbark maple
Acer rubrum
Red maple
Betula papyrifera
Paper birch
Betula pendula
European white birch
Betula utilis var. jacquemontii
Jacquemontii birch
Carpinus betulus 'Fastigiata'
Pyramidal european hornbeam
Fraxinus oxycarpa 'Flame' Flame ash
Sophora japonica
Japanese pagoda tree
Tilia americana
American linden
Tilia cordata
Little leaf linden
Zelkova serrata
Japanese zelkova
Acer macrophyllum
Big leaf maple
Aesculus hippocastanum
Common horsechestnut
Catalpa bignonioides
Southern catalpa
Liquidambar styraciflua
American sweetgum
Nyssa sylvatica
Black tupelo
Oxydendrum Arboreum
Lilly of the valley tree
Acer ginnala
Amur maple


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