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  • Euphorbia myrsinites / Myrtle Spurge.  Also know as Creeping Spurge or donkey tail.  Grown as a decorative plant in rock gardens, particularly valued in xeriscaping in dry areas.  Widely classified as a noxious weed, and in Oregon subject to quarantine.  The milky sap can cause significant skin and eye irritations.
    Leaf-Pattern-Geometric.jpg
  • Euphorbia myrsinites / Myrtle Spurge.  Also know as Creeping Spurge or donkey tail.  Grown as a decorative plant in rock gardens, particularly valued in xeriscaping in dry areas.  Widely classified as a noxious weed, and in Oregon subject to quarantine.  The milky sap can cause significant skin and eye irritations.
    Euphorbia-myrsinites_Myrtle-Spurge-1.jpg
  • Euphorbia myrsinites / Myrtle Spurge.  Also know as Creeping Spurge or donkey tail.  Grown as a decorative plant in rock gardens, particularly valued in xeriscaping in dry areas.  Widely classified as a noxious weed, and in Oregon subject to quarantine.  The milky sap can cause significant skin and eye irritations.
    Euphorbia-myrsinites_Myrtle-Spurge-3.jpg
  • Euphorbia myrsinites / Myrtle Spurge.  Also know as Creeping Spurge or donkey tail.  Grown as a decorative plant in rock gardens, particularly valued in xeriscaping in dry areas, widely classified as a noxious weed, and in Oregon subject to quarantine.  The milky sap can cause significant skin and eye irritations.
    Euphorbia-myrsinites_Myrtle-Spurge-2.jpg
  • Sempervivum tectorum (Common Houseleek.  Also known as Hen and chicks.  Used as an ornamental plant, they are hardy and do well in rock gardens and ecoroofs.
    Common-Houseleek_Sempervivum-tectoru...jpg
  • Sempervivum tectorum (Common Houseleek.  Also known as Hen and chicks.  Used as an ornamental plant, they are hardy and do well in rock gardens and ecoroofs.
    Common-Houseleek_Sempervivum-tectoru...jpg
  • The Living Roof of the California Academy of Sciences building within Golden Gate Park, and adjacent to the De Young Museum.  The roof provides stormwater management for both flow reduction and water quality.  The living roof contains over 40 native California plant species and provides habitat for a wide variety of wildlife, particularly butterflies.  The rooftop's seven undulating green hillocks pay homage to the iconic topography of San Francisco and blurs the boundary between building and parkland.  Living roofs significantly reduce Heat Island Effect, and the vent windows help manage interior climate.
    Living-Roof.jpg
  • Sedum acre / Biting Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    Green-Roof-Sedum-acre_Biting-Stonecr...jpg
  • Sedum acre / Biting Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    Green-Roof-Sedum-acre_Biting-Stonecr...jpg
  • Sedum oreganum / Oregon Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    Green-Roof-Sedum-oreganum_Oregon-Sto...jpg
  • Sedum spathulifolium / Pacific Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    Green-Roof-Sedum-spathulifolium_Paci...jpg
  • Sedum spathulifolium / Pacific Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    Sedum-spathulifolium-Pacific-Stonecr...jpg
  • Sedum spathulifolium / Pacific Stonecrop.  Sedum is a large family of hardy succulents commonly known as stonecrop.  Many Sedum varieties have the necessary characteristics for ecoroofs, namely adaptability to harsh growing conditions, need for minimal maintenance and irrigation, ability to grow in shallow soil depths, and ability to establish and spread quickly.
    AJH-05b-May-2016-Mt-Tabor-Park-Calen...jpg
  • Forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest plants 1 Bull Run.jpg
  • Path and forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest Plants and Path Bull Run.jpg
  • Forest plants in the Bull Run watershed near Mount Hood, Oregon.  This is the origin of Portland's drinking water, which flows by gravity to the Mount Tabor reservoirs before entering the City's water distribution network.
    Forest plants 2 Bull Run.jpg
  • Forest Vignette, Mount Tabor Park, Portland, Oregon, USA.
    AJH_191005_6187_MA.jpg
  • Forest Vignette, Mount Tabor Park, Portland, Oregon, USA.
    AJH_07b_July-2020.jpg
  • Sonny Bono Salton Sea Wildlife Refuge (EL -227ft), located along the course of the Pacific Flyway in the Imperial Valley of California.  Flooding by the Salton Sea has reduced the manageable area from 36,700 acres to 2,200 acres.  Dykes (dikes) now limit further encroachment.
    Geothermal Energy, California.jpg
  • Northern viscacha (Lagidium peruanum): Rodent of the chinchilla family chinchillidae.  Native to the Peruvian Andes at those elevations between the tree line and the snow line. It is dorsally gray or brown in color, with a bushy tail and long, furry ears. This species lives in large colonies separated into individual family units, like an apartment complex. It eats a wide range of plant matter, settling for almost anything it can find growing in the harsh, rocky environment.
    27_AJH_080619_1551_DRV.jpg
  • Spectacular example of Senecio canescens of the Family: Asteraceae in the Quebrada Llanganuco (Llanganuco Valley) region of Huascarán National Park.  The park was established in 1975, and listed by UNESCO as a World Heritage Site in 1985.  Plant of 45 cm tall.  Has golden flower heads, soft leaves of grayish-white color.  Grows on the puna at 4,100 to 4,500 m.  Used for treating coughs.
    40_AJH_080625_1819_DRV.jpg
  • Sonny Bono Salton Sea Wildlife Refuge (EL -227ft), located along the course of the Pacific Flyway in the Imperial Valley of California.  Flooding by the Salton Sea has reduced the manageable area from 36,700 acres to 2,200 acres.  Dykes (dikes) now limit further encroachment.
    Geothermal Cooling Towers, Californi...jpg
  • The Water Garden is a series of three cascading stormwater planters on Vine Street in Seattle, performing flow control and treatment for urban runoff in a visible and demonstrative way, bringing public awareness to the City’s water conservation efforts.  The Water Garden is set in a curb-extension micro-park within the public right-of-way and treats stormwater that discharges from the Beckoning Cistern, a functional urban stormwater sculpture by Buster Simpson.  The Water Garden features plantings of ferns, shrubs and water plants, designed to provide treatment through biofiltration and other Green Street processes.  The Water Garden is part of the Growing Vine Street Project, a green street initiative in Seattle’s Belltown district.
    Water-Garden-Vine-Street.jpg
  • Rain garden manages stormwater runoff at Mt Tabor Middle School.  Partnership of the school, Portland Public Schools and Environmental Services built the rain garden to reduce storm flows to the public sewer line.  Sediments and pollutants are removed before the water gradually soaks into the ground.  A 10-year maintenance agreement has been signed.
    Rain-Garden-Flow-Control-Weir.jpg
  • Freezing rain forms a protective ice shield around dormant plants in a winter storm, Mount Tabor Park, Portland, Oregon.
    AJH_161210_9858.jpg
  • Continuous pumping is required from a system of channels and dikes around the Salton Sea to limit flooding of farmlands, a wildlife refuge and nearby geothermal energy plants.  The Sonny Bono Salton Sea Wildlife Refuge (EL -227ft) is located along the course of the Pacific Flyway in the Imperial Valley of California.  Flooding by the Salton Sea has reduced the manageable area from 36,700 acres to 2,200 acres.  The dikes now limit further encroachment.
    Drainage Management.jpg
  • Vegetation in this stormwater curb extension filters out pollutants in the stormwater before it soaks into the ground, naturally recharging groundwater.  Stormwater management facilities like this one are are also known as Green Street treatments.  NW 21st Avenue and Raleigh Street, Portland, Oregon.
    Green-Street-Planter-Grasses.jpg
  • Giant lobelia (Lobelia deckenii keniensis) foreground, lichens and giant tree groundsels (Senecio keniodendron) - one in bloom - thrive in the high-precipitation, high-altitude  equatorial climate of Mount Kenya.  These plants are at 4375m (14,355ft), below Midget Peak 4700m (15,420ft), shrouded in afternoon mist.  Nikon F4. 28-70/3.5D. Kodak E100SW.
    Lobelia and Groundsels, Mt Kenya
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