 Roots of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Clump of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Narrow leaves of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) extracted from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) extracted from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) with roots taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Old plywood mosque near Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Plywood mosque near Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) submerged in Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Spiny leaves of brittle naiad aquatic plant (Najas marina) from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) on dark background taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Mihrab (semicircular prayer niche) in qibla wall inside old plywood mosque near Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) on dark background taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) with serrate edges taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Widgeon Grass (Ruppia maritima) with flowers in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Stand of aquatic plant Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Fruits and a flower of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dense stand of aquatic plant Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Cluster of fruits of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Membranous sheath with a flower(?) of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Close up of pea shaped fruits of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Close up of membranous sheath of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Close up of pea shaped fruits (drupelets) of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Evans bluetail damselfly (Ischnura evansii) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Birdwatching with QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Watching birds with QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Bright mature male broad scarlet dragonfly (Crocothemis erythraea) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Broad scarlet dragonfly (Crocothemis erythraea) in obelisk position near a service road of Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Close up of membranous sheath with coiled stalk (peduncle) bearing flowers and fruits of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Female broad scarlet dragonfly (Crocothemis erythraea) holding its abdomen up (obelisk position) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Group of birdwatchers from QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Group of birdwatchers from QNHG (Qatar Natural History Group) on a service road near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Dried caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Old plywood mosque near Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried Abu Nakhla jail ponds (sewage lagoons), with caked mud at the bottom. Qatar, April 18, 2015
 Dried caked mud on the bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Texture of dried caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Shrinking water reservoir of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried caked mud covering the bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Blue dome and traces of a chandelier in a plywood mosque near Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Grass Sporobolus spicatus growing on dried bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dying aquatic plant of brittle naiad (Najas marina) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried aquatic plants of brittle naiad (Najas marina) in caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried aquatic plants of brittle naiad (Najas marina) on muddy bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Drying Abu Nakhla jail ponds (sewage lagoons), April 18, 2015
 A road near a wastewater treatment plant in Lick Creek Park. College Station, Texas, August 4, 2022
 Deer Island Light (modern tower) and Deer Island Sewage Treatment Plant (Boston Harbor Wastewater Treatment Plant) in Boston Harbor, view from a boat. Boston, Massachusetts, November 11, 2004
 Seedlings of Salsola soda (Suaeda maritima, Suaeda iranshahrii var. arabica) in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 14, 2015
 Plant of Linaria albifrons extracted from a roadside south from Ras Laffan. North-eastern Qatar, February 19, 2016
 Warped brown roots for sale in spice section of Souq Waqif (Old Market). Doha, Qatar, February 8, 2014
 Small plants of sunrose (Helianthemum ledifolium) extracted from grass in area of Ras Laffan farms. North-eastern Qatar, February 19, 2016
 Beaked fruits and a flower of Monsonia heliotropioides (geranium family) on a roadside of Rawdat Rashed Road in Umm Al Zubar West. Qatar, December 11, 2015
 Seedling of prickly Dock (Emex spinosa) extracted from sand on a plane of Rawdat Jarra north-east from Dukhan. Qatar, February 20, 2016
 Bindweed (Convolvulus fatmensis) with a flower extracted from windblown sand on roadside of Salwa Road in area of Khashem Al Nekhsh. Qatar, February 26, 2016
 Remains of a car near Abu Nakhla lagoons. South from Doha, Qatar, May 27, 2016
 Blooming plant of Ononis sicula (Barak Sicily) extracted from a small runnel in area of Ras Laffan Farms, on north-eastern coast. Qatar, February 12, 2016
 Yellow sulphuric roots (turmeric, yellowish-brown tuberous rhizome of a plant of Curcuma longa, ginger family) in spice section of Souq Waqif (Old Market). Doha, Qatar, February 8, 2014
 Alyssum (Lobularia maritima) planted in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Alyssum (Lobularia maritima) flowers in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Dry fruits (long-beaked siliqua) of field mustard (Brassica rapa) on roadside of Salwa Road near Karaana, south-west from Doha. Qatar, April 23, 2014
 Inflorescence of pan dropseed (Sporobolus ioclados) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Salsola soda (Suaeda maritima, Suaeda iranshahrii var. arabica) on littoral of Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, August 29, 2015
 Small flowers and beaked fruits of Sahara mustard (Asian mustard, wild-turnip, Brassica tournefortii) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, December 18, 2015
 Pink flowers of tamarisk (Tamarix aucheriana) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Purple inflorescence of pan dropseed (Sporobolus ioclados) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Sedge (Cyperus conglomeratus) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Green and white panicle of pan dropseed (Sporobolus ioclados) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Tussock forming grass pan dropseed (Sporobolus ioclados) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Close up of a purple inflorescence of pan dropseed (Sporobolus ioclados) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Silver ragwort (dusty miller, Senecio cineraria, Jacobaea maritima) in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, April 26, 2016
 Silver ragwort (dusty miller, Senecio cineraria, Jacobaea maritima) in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Flowers of desert thorn (Lycium shawii, local name Awsaj) east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Tussock of grass pan dropseed (Sporobolus ioclados) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Dry seeds of Medicago laciniata carpeting the ground of a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Aerial roots (pneumatophores) of mangroves near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, April 4, 2015
 Seedling of Salsola vermiculata (local name hamd) taken from area of ponds near the entrance of Irkhaya (Irkaya) Farms. Qatar, November 13, 2015
 Aerial roots (pneumatophores) of mangroves (Avicennia marina) Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, May 29, 2015
 Breathing roots (pneumatophores) of mangroves (Avicennia marina) Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, May 29, 2015
 Aerial roots (pneumatophores) of mangroves (Avicennia marina) on Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, April 24, 2015
 Aerial roots (pneumatophores) of mangroves (Avicennia marina) on littoral of Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, May 29, 2015
 Inflorescence of Malabar sprangletop (brown beetle-grass, Leptochloa fusca) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Panicles of Malabar sprangletop (brown beetle-grass, Leptochloa fusca) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Base of a trunk of a palm tree with remains of roots on Corniche. Doha, Qatar, May 3, 2014
 Mangrove tree (Avicennia marina) with aerial roots (pneumatophores) on Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, December 20, 2015
 Roots of a dry sidra tree (Ziziphus) in a silty depression in Al Numan (Naim tribe, Nuaman, Nuaimiya). Northern Qatar, November 20, 2015
 Terminal inflorescence of Malabar sprangletop (brown beetle-grass, Leptochloa fusca) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
 Aerial roots (pneumatophores) of mangroves (Avicennia marina) exposed at low tide near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, April 4, 2015
 Close up of aerial roots (pneumatophores) of mangroves (Avicennia marina) exposed at low tide near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, April 4, 2015
 Mangrove forest (Avicennia marina) with aerial roots (pneumatophores) on west side of Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, December 20, 2015
 Mud flat with aerial roots (pneumatophores) of mangroves (Avicennia marina) exposed at low tide near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, April 4, 2015
 Some hairy roots for sale in spice section in Souq Waqif (Old Market). Doha, Qatar, December 23, 2014
 Some ugly roots for sale in spice section in Souq Waqif (Old Market). Doha, Qatar, December 23, 2014
 Close-up of leaves of beaked hawkweed (Hieracium gronovii) in Lick Creek Park. College Station, Texas, February 28, 2022
 Leaves of beaked hawkweed (Hieracium gronovii) on Richards Loop Trail in Sam Houston National Forest. Texas, February 21, 2024
 Leaves of beaked hawkweed (Hieracium gronovii) on Closed Trail in Lick Creek Park. College Station, Texas, February 28, 2022
 Winter rosettes of beaked hawkweed (Hieracium gronovii) on Richards Loop Trail in Sam Houston National Forest. Texas, February 21, 2024
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