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USDA Forest Service

The U.S. Department of Agriculture Forest Service is a Federal agency that manages public lands in national forests and grasslands. The Forest Service is also the largest forestry research organization in the world, and provides technical and financial assistance to state and private forestry agencies. Gifford Pinchot, the first Chief of the Forest Service, summed up the purpose of the Forest Service—"to provide the greatest amount of good for the greatest amount of people in the long run."
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Image Subject Name Scientific Name Description
1503011 Lophodermium needle casts Lophodermium spp. Brown spot needle cast; loblolly pine
1467361 Elytroderma needle cast of pine Elytroderma deformans
1467396 fir needle cast Lirula abietis-concoloris hysterothecium (top) and pycnidia (bottom)
2652013 spruce needle cast/blight Lirula macrospora long black fruiting bodies
2251057 lodgepole pine needle cast Lophodermella concolor young stand in foreground with injury
2251056 lodgepole pine needle cast Lophodermella concolor older stand with injury
2251058 pine needle cast Lophodermium pinastri severe infection
2251036 larch needle cast Hypodermella laricis diseased needles
2251037 larch needle cast Hypodermella laricis needles with fruiting bodies
1406073 Lophodermium needle casts Lophodermium spp.
1406072 Lophodermium needle casts Lophodermium spp.
1406069 pine needle cast Lophodermium pinastri
1406064 pine needle cast Lophodermium pinastri winter burn and Lophodermium on 40,000 Northern Christmas trees, Holman Farm
1398006 Lophodermium needle casts Lophodermium spp.
1406071 pine needle cast Lophodermium pinastri
1467378 Medusa needle blight Davisomycella medusa
1467386 white pine needlecast Lophodermella arcuata
1467393 needle cast Virgella robusta
1467381 Medusa needle blight Davisomycella medusa
2251054 lodgepole pine needle cast Lophodermella concolor symptomatic tree
1406196 tar spot needlecast Davisomycella ampla
1467365 Elytroderma needle cast of pine Elytroderma deformans
2251041 larch needle cast Hypodermella laricis on old needles and new growth
4178020 pine needle cast Lophodermella cerina infected needles in Loblolly pine crown
2251055 lodgepole pine needle cast Lophodermella concolor systematic needles
1406068 pine needle cast Lophodermium nitens
1406070 pine needle cast Lophodermium pinastri
1241575 fir needle cast Isthmiella abietis Fruiting bodies (hysterothecia) of Isthmiella abietis (needle cast) on midrib of subalpine fir needles.
4178019 pine needle cast Lophodermella cerina on loblolly pine; Camp Livingston 85
1241612 lodgepole pine needle cast Lophodermella concolor Lophodermella concolor turns needles bright red-brown just before bud break in the spring.
1467366 Elytroderma needle cast of pine Elytroderma deformans
2652012 spruce needle cast/blight Lirula macrospora in southeast Alaska
2251079 tar spot of maple Rhytisma acerinum early stage on maple leaves
1467367 Elytroderma needle cast of pine Elytroderma deformans
4178006 pine needle cast Lophodermella cerina Loblolly pine, Camp Livingston
2251046 Elytroderma needle cast of pine Elytroderma deformans symptomatic needles and upturned branches
1241574 fir needle casts Lirula spp. Symptom pattern on fir branches. The red foliage was infected in the previous year.
1241613 lodgepole pine needle cast Lophodermella concolor Lophodermella concolor turns needles bright red-brown just before bud break in the spring.
1406067 Lophodermium needle casts Lophodermium spp.
1467022 larch needle cast Hypodermella laricis
1473151 lodgepole pine needle cast Lophodermella concolor 6/1/1966 Larimer Co., Colorado
1406063 Lophodermium needle casts Lophodermium spp.
1241616 pine needle cast Lophodermium nitens Lophodermium nitens has caused severe defoliation in this western white pine.
1241617 pine needle cast Lophodermium nitens The wilted needles are red-brown with dark mottling at first, then gray.
1241614 lodgepole pine needle cast Lophodermella concolor Fruiting bodies, produced during bud break, are the same color as the dead needles, giving the needles a warty appearance.
1241586 larch needle cast Hypodermella laricis Larch needle blight causes needles to droop on branches turning red the first year.
2251038 tar spot needlecast Davisomycella ampla Douglas-fir Christmas tree plantation
1241587 larch needle cast Hypodermella laricis Black dots of fruiting bodies form in midsummer on needles.
1467382 Medusa needle blight Davisomycella medusa
1406065 pine needle cast Lophodermium pinastri 17 Maneb sprays and check bed
1406062 pine needle cast Lophodermium pinastri
1406060 Lophodermium needle casts Lophodermium spp.
2251059 pine needle cast Lophodermium pinastri infected needles
2251034 larch needle cast Hypodermella laricis large area of injury
2251033 larch needle cast Hypodermella laricis symptomatic needles
1406061 pine needle cast Lophodermium pinastri
1467379 Medusa needle blight Davisomycella medusa
1467385 white pine needlecast Lophodermella arcuata
1467404 pine needle cast Lophodermium nitens black shiny hyserothecia
1467383 Medusa needle blight Davisomycella medusa
1467384 Medusa needle blight Davisomycella medusa hysterothecia
1241615 white pine needlecast Lophodermella arcuata Chronic infection has killed all except the current season's foliage.
1467405 pine needle cast Lophodermium pinastri hysterothecia
1467392 needle cast Virgella robusta
1467402 needlecast Bifusella pini hysterothcia (black irregular lines); pycnidia (brown structures); all fruiting structures confined to sorid areas
1241506 Elytroderma needle cast of pine Elytroderma deformans Witches brooms form in systemically infected branches.
1467368 Elytroderma needle cast of pine Elytroderma deformans witch's broom
1467120 Elytroderma needle cast of pine Elytroderma deformans
1241576 fir needle cast Lirula abietis-concoloris Lirula abietis (needle cast) fruiting bodies (hysterothecia) on midrib of undersides of grand fir needles.
1467397 fir needle cast Lirula abietis-concoloris hysterothecium
1467395 fir needle cast Lirula abietis-concoloris long black hysterothecium along midrib (top) conidia along sulcus on upper surface (bottom)
5058046 tar spot Rhytisma punctatum Sporocarps on leaves
5058047 tar spot Rhytisma punctatum Sporocarps on leaves
5050049 Cyclaneusma needle cast Cyclaneusma minus Apothecia on needles of Scot's pine.
5050050 Cyclaneusma needle cast Cyclaneusma minus Symptoms on needles.
5050051 Cyclaneusma needle cast Cyclaneusma minus Severe infection on Scot's pine.
5050052 Cyclaneusma needle cast Cyclaneusma minus Aerial spraying of the fungicide chlorothalonil for Cyclaneusma control
5050053 Cyclaneusma needle cast Cyclaneusma minus Symptoms on needles.
5050072 tar spot needlecast Davisomycella ampla Symptoms on second-year needles.
5050073 tar spot needlecast Davisomycella ampla Symptoms and fruiting bodies (hysterothecia) on needles of jack pine.
1473150 needlecast Davisomycella attenuata 5/1/1967
1473159 pine needle cast Lophodermella cerina Left to Right: Healthy, Light, Heavy (upper) and Discolor (lower)
1473160 pine needle cast Lophodermella cerina
1473161 pine needle cast Lophodermella cerina
1473260 pine needle cast Lophodermella cerina Lophodermella cerina center in ponderosa; NM, Lincoln Co., Mescalero Apache IR, Upper Fence Canyon
1473262 pine needle cast Lophodermella cerina Photomicrograph
1473133 needle cast Bifusella linearis
1473132 needle cast Bifusella saccata
1473148 needlecast Lophodermella montivaga photo taken 1967
1473149 needlecast Lophodermella montivaga photo taken 6/1/1967
1473157 Medusa needle blight Davisomycella medusa photo taken 8/1/1967
1473158 pine needle cast Lophodermella cerina also one Ips killed tree on the right
1473131 Hypoderma fungus Hypoderma mexicanum photo taken in 1963 of asci and ascospores from needle tissue of type specimen
1473129 needle cast Bifusella saccata 1963
1473130 needle cast Bifusella saccata 1963
1473263 pine needle cast Lophodermella cerina 6/23/1966
1473261 pine needle cast Lophodermella cerina close up of all classes of Lophodermella cerina infected needles from Hassayampa Lake area (healthy, light, moderate, heavy); 5/1/1959
1473200 pine needle cast Lophodermella cerina close up of original infection center from intersection of Walken and Snowdrift Roads
1473199 pine needle cast Lophodermella cerina on Ponderosa pine plantation; 7/1/1967,
1473253 pine needle cast Lophodermella cerina
1473254 pine needle cast Lophodermella cerina original infestation center
1473255 pine needle cast Lophodermella cerina
1473256 pine needle cast Lophodermella cerina moderate infection
1473257 pine needle cast Lophodermella cerina heavy infection
1473258 pine needle cast Lophodermella cerina heavy infection
1473259 pine needle cast Lophodermella cerina
1473266 Elytroderma needle cast of pine Elytroderma deformans
5202068 tar spot Rhytisma americanum Raised spots of leaf; Photo taken in August in Ramsey Co., MN
5202069 tar spot Rhytisma americanum Raised spots on leaf; Photo taken in August in Ramsey Co., MN
3036087 pine needle cast Lophodermium pinastri symptoms on pine
5057098 Ploioderma needle cast of pine Ploioderma lethale
5055014 larch needle cast Hypodermella laricis needle reflush
5051068 Elytroderma needle cast of pine Elytroderma deformans
5055040 needle cast Lophodermium seditiosum
5055041 needle cast Lophodermium seditiosum
5050046 Cyclaneusma needle cast Cyclaneusma minus
5050047 Cyclaneusma needle cast Cyclaneusma minus
5050048 Cyclaneusma needle cast Cyclaneusma minus
1467364 Elytroderma needle cast of pine Elytroderma deformans
1467403 pine needle cast Lophodermium nitens black shiny hyserothecia
1467394 needle cast Virgella robusta long black hysterothecium along midrib
1467401 needlecast Davisomycella montana hysterothecia; note brown margiinal lines surrounding sordid areas
1467369 Elytroderma needle cast of pine Elytroderma deformans
1467370 Elytroderma needle cast of pine Elytroderma deformans slice of bark showing necrotic areas in cambium
1467371 Elytroderma needle cast of pine Elytroderma deformans long, narrow, black, hysterothecia
1467041 pine needle cast Lophodermium pinastri
1467380 Medusa needle blight Davisomycella medusa
1467377 Medusa needle blight Davisomycella medusa
1406066 pine needle cast Lophodermium pinastri 2 1/2 lb. Maneb aerial spray
2251047 Elytroderma needle cast of pine Elytroderma deformans
1241577 fir needle cast Isthmiella quadrispora Yellow discolored needles of subalpine fir with Isthmiella quadrispora (needle cast) infection and secondary infection by Lophomerum autumnale (Darker) magasi.
1241607 pine needle cast Lophodermium nitens Needle casts and blights are most evident in lower crowns of trees. In severe infections such as this all except the current season's foliage are gone or dead. This is lophodermium nitens on western white pine.
1241505 Elytroderma needle cast of pine Elytroderma deformans Cambium of infected branches has small pockets of dark resin.
1241507 Elytroderma needle cast of pine Elytroderma deformans Fruiting bodies are black lines near the base of needles.
2251035 larch needle cast Hypodermella laricis diseased needles
0364020 Lophodermium needle casts Lophodermium spp. close-up view
0364002 tar spots Rhytisma spp. closeup view of leaf damage
0364025 pine needle cast Lophodermella cerina close-up view
0364019 Lophodermium needle casts Lophodermium spp. close-up view

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