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Columbia River Gorge in Oxbow Regional Park. Sandbar in floodplain along Sandy River. Alnus rubra dominant with dense understory of Rubus spectabilis, open areas with perennial grasses.

San Joaquin Experimental Forest. Open foothill woodland on gently rolling hills, dominated by Quercus douglasii with Q. wislizeni & Pinus sabiniana common. Shrubs occasional, understory dominated by annual grasses. Granitic outcrops common.

Crystal Springs Resevoir area

Upper watershed of Austin Creek at The Cedars BLM Management Area, ca. 9 air kilometers NNW of Cazaderos. Well developed Sargent Cypress forest on harsh serpentine substrate. Open canopy with understory of Ceanothus jepsonii, Arctostaphylos spp, Frangula

Occoneechee Mountain State Natural Area. Forest dominated by Quercus and Pinus, with patchy understory of Kalmia.

River canyon draining into Bass lake, above Oakhurst. Ponderosa pine, Quercus chrysolepis, Calocedrus, Q. kelloggii, Cercocarpus and Arctostaphylos viscida all common. Granitic substrate.

Columbia River Gorge in Oxbow Regional Park. Oldgrowth Pseudotsuga, Thuja and Tsuga forest. Open, with deciduous trees and snags scattered throughout. Shrub layer of Rubus spectabilis and Corylus sp., with Polystichum abundant on forest floor. Understory

Cuesta Ridge east of Cuesta Pass, near large radio tower complex. Steep north facing slope vegetated by dense Pinus attenuata forest and chaparral. Pine forest with understory of Quercus chrysolepis and Q wizlisenii. Substrate of silicious white shale.

Kilombero Nature Reserve in the Udzungwa Mountains. Nyumbanitu Mountain, ca. 75 air-kilometers ESE of Iringa and ca. 5 km S of the village of Udekwa. Wet montane forest heavily influenced by mist from low clouds. Area with patchy canopy, understory of sed

White Mountains. Chiatovitch Creek near junction of 4WD roads to north and south forks of Chiatovitch Creek. Along rushing stream through Pinyon pine woodland. Populus tremuloides corridor with understory of Betula, Rosa, Ribes and diverse herb layer of g

Hwy 70 along the north fork of the Feather River, at western-most rest stop. Northwest facing slope dominated by Quercus chrysolepis and Pseudotsuga menziesii, with occasional Umbellularia californica and Pinus ponderosa. Diverse shrub layer with understo

Anderson creek waterfalls, along Socates Mine Road. Along creek through foothill woodland dominated by Quercus douglasii, Pinus sabiniana and Q. kelloggii, with Umbellularia californica common. Open understory of Arctostaphylos and Ceanothus.

Los Padres National Forest along Red Hill Rd., near junction with Hwy 58. Mosaic of vernal pools, blue oak savannah and chamise chaparral. Extensive biotic crusts associated with red clay soil.

Channel Islands: Santa Catalina Island. Little Geiger Canyon. Seasonal drainage with dense shrub canopy dominated by Quercus pacifica, Rhus integrifolia and Heteromeles arbutifolia. Mimulus and Keckiella common. Small grove of Lyonothamnus floribundus pre

Las Pilitas Road, near junction with Pozo Rd. Foothill woodland near ecotone with Chamise chaparral. Quercus agrifolia, Q. douglasii & Pinus sabiniana all common. Shrub understory sparse, annual grasses and forbs abundant. Coarse sandstone outcrops abunda

Chimeneas Ranch in the mountains southwest of Soda Lake. Juniper woodland with Quercus john-tuckeri common and Quercus douglasii occasional. Well developed shrub layer of Ribes quercetorum, Lonicera interrupta, Salvia leucophylla, Ericameria linearifolia

Hollister Hills State Vehicular Recreation Area, near Mudstone Ranch entrance. Along seasonal streamlet in mosaic of annual grassland, coastal scrub of Artemisia and Salvia and open oak woodland of Quercus douglasii and Q. agrifolia.

Big Creek Reserve, UC Natural Reserve System, along Hwy 1 at Big Creek, ca. 5 miles north of Lucia. Canogas Falls Trail. Coastal Redwood forest along large creek. Dense redwood canopy with subcanopy of Acer macrophyllum, Umbellularia californica, Quercus

Buttermilk falls State Park, near Ithaca. Oak- Hemlock forest with Beech and Pine.

Channel Islands: Santa Cruz Island. Large Lyonothamnus grove just below and to the north of ridge between Lagunas Secas and Mt. Diablo. Dense canopy, with understory of sparse annual grasses, Solanum wallacei, and Marah macrocarpa.

Sequoia National park, vicinity of Lodgepole campground along Marble fork of the Kaweah River. White fir forest with Incense Cedar, Ponderosa pine and Lodgepole pine along river. Understory of Arctostaphylos, Ceanothus and Ribes.

Almaden Quicksilver County Park. Just west of Mockinbird Hill entrance. Narrow canyon in Oak-Bay woodland with Toxicodendron and ferns.

Channel Islands: San Clemente Island. Top of Horton Canyon. Open scrub dominated by Artemisia californica with Calystegia macrostegia and grasses. Clay soil derived from volcanic rock

Kilombero Nature Reserve in the Udzungwa Mountains. Nyumbanitu Mountain, ca. 75 air-kilometers ESE of Iringa and ca. 5 km S of the village of Udekwa. Dense, wet montane forest heavily influenced by mist from low clouds. Mixed bamboo and hardwood forest al

Along Muir Mill Road southwest of Willits. Along creek through redwood grove with Umbellularia, Pseudotsuga and Quercus chrysolepis.

Por Venir, a small village ca. 35 air kilometers west-southwest of Iquitos. Lowland Amazonian rainforest. Terra firme forest.

Channel Islands: Santa Rosa Island. Burma road, along ridgeline near Soledad Peak. Small stand of Quercus tomentella surrounded by grassland. Dense canopy with trunks covered by Alsia californica, soil with large patches of Scleropodium and Isolthecium.

Cerro Alto Campground, Los Padres Natl. Forrest along Hwy 41 between Morro Bay and Astascadero. Cerro Alto Trail heading east from the back of the campground along east fork of Morro Creek. Quercus agrifolia- Umbellularia forrest along riparian corridor w

White Mountains. South Fork of McAfee Creek. Alpine meadow with graminoids, Purshia, Ribes, Primula and ferns.

Cirque de Cilaos. Puits Malloit Trail between towns of Cilaos and Bras-Sec. West-facing canyon wall with disturbed vegetation dominated by Casuarina equisetifolia.

Mendocino National Forest along road from Covelo east to Mendocino Pass. Open foothill woodland along streamlet on S facing slope. Quercus wislizenii, Q. douglasii dominant with Aesculus, Q. kelloggii and Arbutus. Arctostaphylos and Toxicodendron occasion

Eastern Sierra west of Bishop, along road from Highway 168 to South Lake. Along tributary to the south fork of Bishop Creek. Forest of Pinus contorta and Populus tremuloides along small, cascading creek. Understory of Salix, Ribes cereum and Symphoricarpo

Mineral King Road at bridge over the Kaweah River, ca. four air miles northeast of Three Rivers. Diverse foothill woodland dominated by Quercus spp, Aesculus and Pinus sabiniana. Diverse shrub layer of Ceanothus, Arctostaphylos, Adenostoma and others. Ope

Channel Islands: San Clemente Island. Small grove of ca. 30 individuals of Quercus tomentella at top of eastern escarpment, just below and west of ridgeline. Very steep east facing slope with dense litter layer and little herbaceous growth. Trees densely

White Mountains. Crooked Creek, at first meadow below the Crooked Creek Field Station. Subalpine Wet meadow dominated by graminoids with scattered Artemisia and granitic boulders. Surrounding hills with Bristlecone Pine forest.

El Yunque National Forest. Cloud forest along trail to summit. Canopy mostly less than 10m high, with sclerophyllous leaved angiosperms and many palm and ferns.

Santa Monica Mountains, near Agoura Hills. Grassy slope above intersection of Agoura Rd and Reyes Adobe Rd. Open, grassy, rocky slope with Selaginella among rock outcrops.

Lake Nacimiento, on first peninsula east of the dam, near Rocky Canyon Campground along the 5K trail. Open foothill woodland with Quercus douglasii, Pinus sabiniana and Quercus agrifolia. Understory of annual grasses with scattered Ceanothus cuneatus.

Kilombero Nature Reserve in the Udzungwa Mountains. Nyumbanitu Mountain, ca. 75 air-kilometers ESE of Iringa and ca. 5 km S of the village of Udekwa. Wet montane forest heavily influenced by mist from low clouds. Small wet meadow with flowiing water, surr

Kilombero Nature Reserve in the Udzungwa Mountains. Nyumbanitu Mountain, ca. 75 air-kilometers ESE of Iringa and ca. 5 km S of the village of Udekwa. Dense, wet montane forest heavily influenced by mist from low clouds. Along creek through dense forest wi

UC Berkeley's Angelo Reserve, along the south fork of the Eel River northwest of Branscomb. Vicinity of Reserve headquarters in Pseudotsuga menziesii and Sequoia sempervirens forest.

Caliente Range, on north facing hillside above trailhead off Padrones Canyon road. Steep hillside dominated by Juniperus californicus and Ericameria linearifolia with dense exotic annual grass understory.

Jenarro Herrera, a small town ca. 130 air kilometers south-southwest of Iquitos. Lowland Amazonian rainforest. White sand forest with low canopy of ca. 10m, very dense forest of small trees.

Rinconada Trailhead, east flank of Santa Lucia Mtns. Foothill woodland dominated by Quercus douglasii, Q. agrifolia and Pinus sabiniana. Understory ofCeanothus cuneatus, Heteromeles arbutifolia and Q. durata. Nassella common. North facing gentle serpentin

Austin Creek State Recreation Area, south of parking area for Bullfrog Pond Campground. Mosaic of annual grassland, mixed evergreen woodland, chaparral and Baccharis scrub. Dominant trees include Quercus agrifolia, Umbellularia californica, Arbutus menzie

Purisima Creek Redwoods Open Space, along Highway 35. Sequoia forest along ridgeline with Notholithocarpus, Pseudotsuga and Arbutus. Shrub layer of Vaccinium.

Interior Coast Range, Frank Raines Regional Park, along Highway 130. Gully in Quercus douglasii and Juniperus californicus woodland. Understory of annual grasses.

Lead Mountain, near junction of Hwy 9 and Hwy 193. Rich forest dominated by Tsuga, Betula, Acer, Fraxinus and Fagus. Open understory with ferns.

Calvert Cliffs State Park, along Red Trail. Coastal forest of Quercus, Pinus and Liquidambar with dense understory dominated by Ilex and Kalmia. Soil derived from ancient sand dunes.

Columbia River Gorge in Viento State Park. Populus trichocarpa stand along floodplain with light shrub layer of Rubus et al. Thick litter layer. Trees dense, mostly with dbh of 10-15in.