Phytophthora lateralis

sporangia-conidia

diseased hedgerow in Trinidad

Phellinus weirii

root ball

stain in sapwood

dieback

rotted log at Redwood Creek

resupinate basidiocarp

Armillaria mellea

fallen tree with roots rotted by A. mellea

fruiting bodies on tree

basidiocarps showing gilled hymenophore

black rhizomorphs

rotted wood and sclerotial mass

white rhizomorphs

lamellate basidicarps; spores white

Leptographium wageneri (anamorphic stage = Verticicladiella wageneri)

disease center of v. w.

wilt of douglas fir

v. w. hyphae in tracheids of douglas fir

typical stain of v. w. in shape of arc

black stain in sapwood

pathological heartwood

condial stage of v. w.

Heterobasidion annosum

diseases center in Ponderosa pine stand

silvery mycelium on surface of sapwood

effuso-reflexed basidiocarp with rounded pileus margin and slight indentation; porose cream-colored hymenophore; on right black, cracked pileal surface

young, bud-like basidiocarps