Unknown bee visiting what we used to call Aster hesperius but which is now known by the somewhat unwieldly name Symphyotrichum lanceolatum var. hesperium. Marsh aster is simpler! Some other common names for this native forb include Western lined aster and Siskiyou aster. The ray flowers are about 10 mm long. This was a small (but not tiny) bee.August 2, 2014, Salt Lake County, Utah, growing with Euthamia occidentalis, elev. 4,335 ft., wet meadow/marsh.
Symphyotrichum lanceolatum var. hesperium (syn. Aster hesperius). Grows in our area at lower elevations, along streams and in wet meadows. Locally native. Ray flowers are about 10 mm long.August 2, 2014, Salt Lake County, Utah, growing with Euthamia occidentalis, elev. 4,335 ft.
2010-10-15 Vienna XXII. district (Lobau Heisslnde - heath, 155 m AMSL).Habitus/flower.This species has been introduced recently and not voluntarily some decades ago, it has become common and even (in some habitats) invasive since. Originally, I tagged this Symphyotrichum lanceolatum, but revision shows that it must be the hybrid between this one and S. novi-belgii;for ID see also remarks here.Up front you can see leaves of a young Quercus robur tree.German name: Weidenblatt-Herbstaster