ClipArt ETC
"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Large herb with a very stout stem, often from 1 to 3dm in diameter at base, over 1.5m tall.

Acnida

Large herb with a very stout stem, often from 1 to 3dm in diameter at base, over 1.5m tall.

Plants aromatic when crushed.

Acorus

Plants aromatic when crushed.

Tapering at the end.

Acuminate

Tapering at the end.

Terminating with a sharp point.

Acute

Terminating with a sharp point.

Fruits borne in a ring; stamens 6; inflourescences much branched.

Alisma

Fruits borne in a ring; stamens 6; inflourescences much branched.

Leaf, when examined with hand lends, not showing zones.

Alismaceae

Leaf, when examined with hand lends, not showing zones.

Leaves with several prominent rib-like veins running from base to apex.

Alismaceae

Leaves with several prominent rib-like veins running from base to apex.

Leaves with several very prominent ribs running from base to apex.

Alismaceae

Leaves with several very prominent ribs running from base to apex.

Buds with a single scale; fruit cone-like.

Alnus

Buds with a single scale; fruit cone-like.

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

Alternate

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

Flowers in stalked head-like spikes; leaves over 3.5cm long.

Alternanthera

Flowers in stalked head-like spikes; leaves over 3.5cm long.

Flowers not showy, in axils of leaves, mostly purple.

Ammannia

Flowers not showy, in axils of leaves, mostly purple.

A compund leaf.

Ampelopsis

A compund leaf.

Leaves leathery, toothed only near the apex.

Ampelothamnus

Leaves leathery, toothed only near the apex.

Leaves usually three in whorls (sometimes four); flowers minute and inconspicuous

Anacharis

Leaves usually three in whorls (sometimes four); flowers minute and inconspicuous

Spores borne in sacs on lower leaf surface; divisions of the leaf small, less than 2 cm long.

Anchistea

Spores borne in sacs on lower leaf surface; divisions of the leaf small, less than 2 cm long.

The pollen-bearing portion of a stamen.

Anther

The pollen-bearing portion of a stamen.

Plants not woody.

Arundinaria

Plants not woody.

Slenderly tapering; long drawn-out.

Attenuate

Slenderly tapering; long drawn-out.

A bristle-like appendage.

Awn

A bristle-like appendage.

The angle formed by a leaf with the stem.

Axil

The angle formed by a leaf with the stem.

Spikelets arranged along rachis with back of fruit away from rachis; rachis 3-sided.

Axonopus

Spikelets arranged along rachis with back of fruit away from rachis; rachis 3-sided.

Plant body of small overlapping scales.

Azolla

Plant body of small overlapping scales.

Fruit oval, longer than broad; leaves mostly over 6cm.

Benzoin

Fruit oval, longer than broad; leaves mostly over 6cm.

Leaves not leathery, entire or with wavy edges.

Berchemia

Leaves not leathery, entire or with wavy edges.

A shrub with berries on it.

Berry

A shrub with berries on it.

Bark falling away in reddish, papery layers.

Betula

Bark falling away in reddish, papery layers.

Lenticular

Biconvex

Lenticular

Leaves opposite.

Bidens

Leaves opposite.

Stems round, or nearly so, in cross-section; flowers showy, yellow.

Bidens

Stems round, or nearly so, in cross-section; flowers showy, yellow.

Bearing two teeth at the tip.

Bidentate

Bearing two teeth at the tip.

The expanded portion of a leaf.

Blade

The expanded portion of a leaf.

Leaves long petioled; flowers inconspicuous.

Boehmeria

Leaves long petioled; flowers inconspicuous.

Leaves long petioled; flowers minute, in sessile clusters on branch.

Boehmeria

Leaves long petioled; flowers minute, in sessile clusters on branch.

An image of Missouri's Botanical Garden, formerly known as Shaw's Garden in 1874. Founded in 1859, the Missouri Botanical Garden is one of the oldest botanical institutions in the United States and a National Historic Landmark.

Missouri's Botanical Garden

An image of Missouri's Botanical Garden, formerly known as Shaw's Garden in 1874. Founded in 1859, the…

A modified leaf usually subtending a flower or flowers.

Bract

A modified leaf usually subtending a flower or flowers.

Leaves elliptic, the petiole ad under surface coated with a thick jelly-like material.

Brasenia

Leaves elliptic, the petiole ad under surface coated with a thick jelly-like material.

Leaves alternate, not prominently toothed, subcordate at the base.

Breweria

Leaves alternate, not prominently toothed, subcordate at the base.

Submerged leaves opposite; leaflets not toothed.

Cabomba

Submerged leaves opposite; leaflets not toothed.

Upper leaves shorter and broader.

Callitriche

Upper leaves shorter and broader.

Plant small, less than 4dm tall; flowers yellow.

Caltha

Plant small, less than 4dm tall; flowers yellow.

The outermost circle of flower parts; made up of sepals.

Calyx

The outermost circle of flower parts; made up of sepals.

This is a royal botonical, commonly seen in the British Isles.

Stewartia Camelia

This is a royal botonical, commonly seen in the British Isles.

Sepals longer than the calyx tube, reflexed.

Campanula

Sepals longer than the calyx tube, reflexed.

With a cellular-like surface.

Cancellate

With a cellular-like surface.

Leaves large, mostly over 6 cm wide; flowers yellow, very large.

Canna

Leaves large, mostly over 6 cm wide; flowers yellow, very large.

Achene enclosed in a sac.

Carex

Achene enclosed in a sac.

A simple pistil or one of the parts of a compoud pistil.

Carpel

A simple pistil or one of the parts of a compoud pistil.

Leaflets fewer and large, usually 9; tree not thorny.

Carya

Leaflets fewer and large, usually 9; tree not thorny.

Leaves toothed; veins of leaf irregular.

Centella

Leaves toothed; veins of leaf irregular.

Submerged leaves whorled; leaflets minutely toothed on one edge.

Ceratophyllum

Submerged leaves whorled; leaflets minutely toothed on one edge.

Plant body made up of stems bearing whorled, brittle branches.

Chara

Plant body made up of stems bearing whorled, brittle branches.

Leaflets wider, toothed; plants pernnial.

Cicuta

Leaflets wider, toothed; plants pernnial.

Minutely ciliate.

Cilliate

Minutely ciliate.

Spikelets with the uppermost scale only enclosing an achene; our commonest species has saw-edged. cutting leaves.

Cladium

Spikelets with the uppermost scale only enclosing an achene; our commonest species has saw-edged. cutting…

The contracted stalk-like base of a petal.

Claw

The contracted stalk-like base of a petal.

Sepals copiously pubescent; fruit a subglobose, valved capsule, leaves cuneate.

Clethra

Sepals copiously pubescent; fruit a subglobose, valved capsule, leaves cuneate.

Flower clusters terminal, fruit winged.

Cliftonia

Flower clusters terminal, fruit winged.