Plants — 23,508 Species

Lancewood tree daisy

Olearia lacunosa Hook.fil.

Olearia lacunosa (lancewood tree daisy) is a New Zealand native shrub or small tree growing up to 5 metres tall.

snowy daisy-bush

Olearia lirata (Sims) Hutch.

Olearia lirata is a flowering shrub native to south-eastern Australia, found in moist forest and scrub habitats.

ipswich daisy

Olearia nernstii F.Muell.

Olearia nernstii is a flowering shrub native to coastal and inland eastern Australia.

Akiraho

Olearia paniculata (J.R.Forst. & G.Forst.) Druce

Olearia paniculata, or akiraho, is a small evergreen tree endemic to New Zealand, commonly grown for hedges.

Asthma Bush

Olearia phlogopappa (Labill.) DC.

Olearia phlogopappa, the dusty daisy-bush, is an erect shrub native to southeastern Australia with daisy flowers in multiple colours.

Showy Daisy-bush

Olearia pimeleoides (DC.) Benth.

Olearia pimeleoides is a common flowering shrub widespread in southern Australian woodlands, shrublands and forest.

Twiggy Daisy-Bush

Olearia ramulosa (Labill.) Benth.

Olearia ramulosa is a common Australian daisy shrub grown in horticulture as a low hedge.

Heketara

Olearia rani (A.Cunn.) Druce

Olearia rani (heketara) is a common small New Zealand forest tree with white-leaf undersides and spring white flower clusters.

Coastal tree daisy

Olearia solandri (Hook.fil.) Hook.fil.

Olearia solandri, the coastal daisy-bush, is an endemic New Zealand Asteraceae coastal shrub that can become a small 4m tree.

toothed daisy-bush

Olearia tomentosa (J.C.Wendl.) DC.

Olearia tomentosa, the toothed daisy-bush, is a flowering shrub native to eastern Australia, with daisy-like white or blue flower heads.

lineleaf whitepuff

Oligomeris linifolia (Vahl ex Hornem.) J.F.Macbr.

Oligomeris linifolia, or lineleaf whitepuff, is a Resedaceae annual flowering plant native to multiple regions across four continents.

Hard pear

Olinia ventosa (L.) Cufod.

Olinia ventosa, hard-pear, is a large South African evergreen tree, now widely grown as a hardy, attractive garden shade tree.

desert ironwood

Olneya tesota A.Gray

Olneya tesota (desert ironwood) is a Sonoran Desert tree with dense hard wood valued for artisanal uses.

Smilo Grass

Oloptum miliaceum (L.) Röser & Hamasha

Oloptum miliaceum, commonly called smilograss, is a clumping perennial grass native to Eurasia and introduced worldwide as a casual weed.

grasswidow

Olsynium douglasii (A.Dietr.) E.P.Bicknell

Olsynium douglasii is an iris-family herbaceous perennial native to western North America, grown ornamentally.

Olsynium junceum (E.Mey. ex C.Presl) Goldblatt

Olsynium junceum (E.Mey. ex C.Presl) Goldblatt

Olsynium junceum is an iris family species native to South America, with three recognized subspecies found across Chile and neighboring countries.

Carrycillo

Olyra latifolia L.

Olyra latifolia is a widespread bamboo species, its stems have been used to make drinking straws and spinning bobbins.

Woodland Cudweed

Omalotheca sylvatica (L.) Sch.Bip. & F.W.Schultz

Omalotheca sylvatica is a perennial herb with specific leaf and flower traits, flowering from July to September.

Blue-eyed-Mary

Omphalodes verna Moench

Omphalodes verna is a creeping semi-evergreen flowering plant grown as an ornamental, native to Europe and introduced to Quebec.

stinknet

Oncosiphon pilulifer (L.fil.) Källersjö

Oncosiphon pilulifer, or globe chamomile, is a strong-scented annual native to southern Africa that can cause allergic reactions.

Sainfoin

Onobrychis viciifolia Scop.

Onobrychis viciifolia, or common sainfoin, is a temperate forage legume with anthelmintic properties that is regaining scientific attention.

sensitive fern

Onoclea sensibilis L.

Onoclea sensibilis, the bead fern, is a Northern Hemisphere fern with distinct fertile and sterile fronds and a long fossil history.

trailing restharrow

Ononis arvensis L.

Ononis arvensis, or field restharrow, is a widespread Eurasian perennial flowering plant in the Fabaceae family closely related to other Ononis species.

tiny restharrow

Ononis minutissima L.