Sweden

Oakes scalewort

Frullania oakesiana

globular spider beetle

Trigonogenius globulus

Oak Jewel Beetle

Agrilus biguttatus

Gibbous minute beetle

Clambus gibbulus

flesh sponge

Oscarella lobularis

Oakleaf Cup

Rutstroemia sydowiana

Oak Leaf-roller

Attelabus nitens

Oak-Loving Gymnopus

Gymnopus dryophilus

Green Wintergreen

Pyrola chlorantha

Oak Mildew

Erysiphe alphitoides

Oak Milk-Cap

Lactarius quietus

Oak Nycteoline

Nycteola revayana

Oak Pin

Cudoniella acicularis

Oak Polypore

Buglossoporus quercinus

Oak Processionea

Thaumetopoea processionea

oak-tree pug

Eupithecia dodoneata

Oak Woodwax

Hygrophorus nemoreus

oaten pipes hydroid

Tubularia indivisa

Aphid

Tetraneura ulmi

Dwarf Milkwort

Polygala amarella

oberthürs grizzled skipper

Pyrgus armoricanus

oblique carpet

Orthonama vittata

Chrysococcus minutus

oblique striped

Phibalapteryx virgata

Oblongleaf orache

Atriplex oblongifolia

sow thistle aphid

Hyperomyzus lactucae

Oblong-leaved Dandelion

Taraxacum oblongatum

Obscure cushion star

Pteraster obscurus

obtuse minute risso

Obtusella intersecta

obtuse peat moss

Sphagnum obtusum

obtuse-pointed lantern moss

Cyrtomnium hymenophyllum

oceanic scud

Gammarus oceanicus

Aspen Leaf Blotch Miner

Phyllonorycter apparella

Oceanspray

Holodiscus discolor

Apple Powdery Mildew

Podosphaera leucotricha

Ochraceous Wave

Idaea serpentata

Spiny Pill Beetle

Chaetophora spinosa

Pale Liverwort

Chiloscyphus pallescens

Small fruit tortrix

Grapholita lobarzewskii

Ochre Bracket

Trametes ochracea

Ochreous Pearl

Anania crocealis

Ochre Club

Clavariadelphus ligula

Grey-bracted Dandelion

Taraxacum pallidipes

Alyssum

Alyssum simplex

Sphecid wasp

Ectemnius cephalotes

Southern pine sawyer

Monochamus titillator

Chrysococcus diaphanus

Ochreous Argent

Argyresthia praecocella

ochreous pug

Eupithecia indigata

Ochre Scalycap

Pholiota subochracea

hyssop loosestrife

Lythrum hyssopifolia

Ocillate rove beetle

Omalium rivulare

Common Pincushion

Dicranoweisia cirrata

Oily Waxcap

Hygrocybe quieta

Olaf's peat moss

Sphagnum olafii

Oldfashioned weigela

Weigela florida

Chrysococcus biporus

old lady

Mormo maura

Old-man-in-the-spring

Senecio vulgaris

Aspen Hoverfly

Hammerschmidtia ferruginea