Asperula orientalis, known as annual woodruff or oriental woodruff, is a species of flowering plant in the family Rubiaceae.Boissier, Pierre Edmond & Hohenacker, Rudolph Friedrich. 1843. Diagnoses Plantarum Orientalium Novarum, ser. 1, 3: 30–31 It is found in Turkey, Lebanon, western Syria, Iraq, the Caucasus and Iran. It is often used as an ornamental plant in various regions and is reportedly naturalized in Oregon, North Dakota and the Czech Republic.Kew World Checklist of Selected Plant Families, Asperula orientalisPlants Profile: Asperula orientalis
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photo of herbarium specimen at Missouri Botanical Garden, syntype of Asperula orientalis World Checklist of Rubiaceae Asperula orientalis