Question: How many species of Banksia are there?

List of Banksia species

List of ''Banksia'' species
This is an alphabetically ordered list of Banksia species, as of 2007.  This list includes all species recognised as current by the Australian Plant Name Index, and also contains all species transferred to Banksia from Dryandra by Austin Mast and Kevin Thiele in 2007. 
List of Banksia species

B.acanthopoda
B.aculeata - prickly banksia
B.acuminata
B.aemula - wallum banksia
B.alliacea
B.anatona
B.aquilonia - northern coastal banksia, jingana (Dyirbal)
B.arborea
B.archaeocarpa (fossil)
B.arctotidis
B.armata
B.ashbyi - Ashby's banksia, orange Banksia
B.attenuata - slender banksia, candlestick banksia, coast banksia
B.audax
B.aurantia
B.baueri - woolly banksia, woolly-spiked banksia, possum banksia
B.baxteri - Baxter's banksia, bird's nest banksia
B.bella
B.benthamiana - Bentham's banksia
B.bipinnatifida
B.biterax
B.blechnifolia
B.borealis
B.brownii - Brown's banksia, feather-leaved banksia
B.brunnea
B.burdettii - Burdett's banksia
B.caleyi - Cayley's banksia, red lantern banksia
B.calophylla
B.candolleana - propeller banksia
B.canei - mountain banksia
B.carlinoides
B.catoglypta
B.chamaephyton - fishbone banksia
B.cirsioides
B.coccinea - scarlet banksia, waratah banksia, Albany banksia
B.columnaris
B.comosa
B.concinna
B.conferta - glasshouse banksia
B.corvijuga
B.croajingolensis
B.cuneata - matchstick banksia, Quairading banksia
B.cynaroides
B.cypholoba
B.dallanneyi
B.densa
B.dentata - tropical banksia, rilidili (Wubuy)
B.drummondii
B.dryandroides - dryandra-leaved banksia
B.echinata
B.elderiana - swordfish banksia, palm banksia
B.elegans - elegant banksia
B.epica
B.epimicta
B.ericifolia - heath-leaved banksia
B.erythrocephala
B.falcata
B.fasciculata
B.fililoba
B.foliolata
B.foliosissima
B.formosa
B.fraseri
B.fuscobractea
B.gardneri - prostrate banksia
B.glaucifolia
B.goodii - Good's banksia
B.grandis - mangite, bull banksia, giant banksia
B.grossa - coarse banksia
B.heliantha
B.hewardiana
B.hirta
B.hookeriana - Hooker's banksia
B.horrida
B.idiogenes
B.ilicifolia - holly-leaved banksia
B.incana - hoary banksia
B.insulanemorecincta
B.integrifolia - coast banksia, white honeysuckle
B.ionthocarpa
B.kingii (fossil)
B.kippistiana
B.laevigata - tennis ball banksia
B.lanata - Coomallo banksia
B.laricina - rose banksia, rose-fruited banksia
B.lemanniana - Lemann's banksia, yellow lantern banksia
B.lepidorhiza
B.leptophylla - slender leaved banksia
B.lindleyana - porcupine banksia
B.littoralis - western swamp banksia, swamp banksia,
B.longicarpa (fossil)
B.lullfitzii
B.marginata - silver banksia, warrock
B.media - southern plains banksia, golden stalk banksia
B.meganotia
B.meisneri - Meisner's banksia
B.menziesii - Menzies' banksia, firewood banksia
B.micrantha
B.mimica
B.montana
B.mucronulata
B.nana
B.nivea
B.nobilis
B. novae-zelandiae (fossil)
B.nutans - nodding banksia
B.oblongifolia - rusty banksia, dwarf banksia
B.obovata
B.obtusa
B.occidentalis - red swamp banksia, water bush banksia
B.octotriginta
B.oligantha - Wagin banksia
B.oreophila - western mountain banksia
B.ornata - desert banksia
B.paleocrypta
B.pallida
B.paludosa - swamp banksia, marsh banksia
B.pellaeifolia
B.petiolaris
B.pilostylis
B.plagiocarpa - Dallachy's banksia, blue banksia, Hinchinbrook banksia
B.platycarpa
B.plumosa
B.polycephala
B.porrecta
B.praemorsa - cut-leaf banksia
B.prionophylla
B.prionotes - acorn banksia, orange banksia
B.prolata
B.proteoides
B.pseudoplumosa
B.pteridifolia
B.pulchella - teasel banksia, dainty banksia
B.purdieana
B.quercifolia - oak-leaved banksia
B.repens - creeping banksia
B.robur - eastern swamp banksia, swamp banksia, broad-leaved banksia
B.rosserae
B.rufa
B.rufistylis
B.saxicola - Grampians banksia, rock banksia
B.scabrella - Burma Road banksia
B.sceptrum - sceptre banksia
B.sclerophylla
B.seminuda - river banksia
B.seneciifolia
B.serra
B.serrata - saw banksia, red honeysuckle, old man banksia
B.serratuloides
B.sessilis - parrot bush
B.shanklandiorum
B.shuttleworthiana
B.solandri - Stirling Range banksia, Solander's banksia
B.speciosa - showy banksia
B.sphaerocarpa - fox banksia, round-fruited banksia
B.spinulosa - hairpin banksia
B.splendida
B.squarrosa
B.stenoprion
B.strahanensis (fossil)
B.strictifolia
B.stuposa
B.subpinnatifida
B.subulata
B.telmatiaea - swamp fox banksia
B.tenuis
B.tortifolia
B.tricuspis - Lesueur banksia, pine banksia
B.tridentata
B.trifontinalis
B.undata
B.verticillata - granite banksia, Albany banksia
B.vestita
B.victoriae - woolly orange banksia
B.vincentia
B.violacea - violet banksia
B.viscida
B.wonganensis
B.xylothemelia


CS1 maint: extra text: editors list (link)

APNI
See also
Taxonomy of Banksia