Abietaceae
Abrophyllaceae
Acaciaceae
Acanthaceae (Acanthus family)
Andrographis
false waterwillow
Anisacanthus
desert honeysuckle
Aphelandra
Asystasia
asystasia
Avicennia
mangrove
Barleria
Philippine violet
Barleriola
barleriola
Blechum
blechum
Carlowrightia
wrightwort
Crossandra
crossandra
Dicliptera
foldwing
Dyschoriste
snakeherb
Elytraria
scalystem
Eranthemum
eranthemum
Graptophyllum
graptophyllum
Hemigraphis
hemigraphis
Henrya
henrya
Holographis
Hygrophila
swampweed
Hypoestes
hypoestes
Justicia
water-willow
Lepidagathis
Megaskepasma
Brazilian red-cloak
Nomaphila
nomaphila
Odontonema
toothedthread
Oplonia
oplonia
Pachystachys
pachystachys
Pseuderanthemum
pseuderanthemum
Ruellia
wild petunia
Sanchezia
sanchezia
Siphonoglossa
tube tongue
Stenandrium
shaggytuft
Strobilanthes
Teliostachya
teliostachya
Tetramerium
tetramerium
Yeatesia
bractspike
Aceraceae (Maple family)
Aclistocharaceae
Aconitaceae
Acoraceae (Calamus family)
Acrobolbaceae
Acrobolbus
Austrolophozia
Enigmella
Goebelobryum
Lethocolea
Marsupidium
Tylimanthus
Acrochaetiaceae
Acrochaetium
Audouinella
Kylinia
Rhodochorton
Acrosiphoniaceae
Acrosymphytaceae
Schimmelmannia
Acrotylaceae
Acrotylus
Amphiplexia
Hennedya
Ranavalona
Reinboldia
Actaeaceae
Actinidiaceae (Chinese Gooseberry family)
Actinochloridaceae
Adelanthaceae
Adelanthus
Calyptrocolea
Wettsteinia
Adenogrammaceae
Adianaceae
Adiantaceae
Adoxaceae (Moschatel family)
Adoxa
adoxa
Sambucus
elderberry
Aegialitidaceae