Taiwan

Aquimarina intermedia

Aquimarina litoralis

Arborescent pricklypear

Opuntia leucotricha

arching bushweed

Flueggea suffruticosa

Arctic poppy

Papaver nudicaule

Arcyria globosa

Arcyria insignis

Arenimonas malthae

Argentina Vervain

Verbena bonariensis

austral cone

Conus australis

Australian dodder

Cuscuta australis

Australian-nut

Macadamia ternifolia

Australian Pine

Pinus nigra

Australian tallowwood

Eucalyptus microcorys

Australian waterbuttons

Cotula australis

Austrian Yellow-cress

Rorippa austriaca

Autumn fern

Dryopteris erythrosora

Autumn Millet

Panicum dichotomiflorum

Autumn zephyrlily

Zephyranthes candida

Avocado

Persea americana

Awnless Barnyard Grass

Echinochloa colonum

Awnless Geranium

Geranium molle

Azalea Gall

Exobasidium japonicum

Azalea lace bug

Stephanitis pyrioides

Azorhizobium caulinodans

Azospirillum agricola

Azospirillum doebereinerae

Azospirillum fermentarium

Azospirillum melinis

Azospirillum rugosum

Azospirillum soli

Azpeitia nodulifera

baby jump-up

Mecardonia procumbens

baby primrose

Primula malacoides

Baby’s Tears

Lindernia rotundifolia

Bachelor'S-Button

Gomphrena globosa

Bacillus anthracis

Bacterial Crown Gall

Agrobacterium radiobacter

Bacterial Speck

Pseudomonas syringae

Bacteriastrum hyalinum

Badhamia affinis

Badhamia nitens

Badhamia panicea

bagflower

Clerodendrum thomsoniae

Bahiagrass

Paspalum notatum

Baikal skullcap

Scutellaria baicalensis

Ball Mustard

Neslia paniculata

Balloon vine

Cardiospermum halicacabum

Balloon vine

Cardiospermum grandiflorum

Balm

Melissa officinalis

Balsampear

Momordica charantia

Bamboo longhorn beetle

Chlorophorus annularis

bamboo mussel-scale

Pinnaspis buxi

Bamboo orchid

Arundina graminifolia

Bamboo pit scale

Bambusaspis bambusae

Banana shrub

Magnolia figo

banana water-lily

Nymphaea mexicana

bandana-of-the-Everglades

Canna flaccida

Banded greenhouse thrips

Hercinothrips femoralis

Banded thrip

Franklinothrips vespiformis