Phyllocoptes eupadi Phyllocoptes eupadi Phyllocoptes eupadi is a mite that chemically induces a pouch gall to develop as a sub-spherical distortion rising up from the upper surface of the lamina of leaves of blackthorn shrubs "Prunus spinosa" and other "Prunus" spp. Synonyms are "Eriophyes padi" (Nalepa) and "Phytoptus padi prunianus" (Nalepa 1890). The gall's appearance on the upper surface is sub-spherical pustules, hairy and opening below, often clustering along the midrib, but also found over the whole leaf lamina surface and may vary in colour from pale yellow-green to deep red. The adult mite lives on sap, sucked from the cell tissues.
Tetradymia spinosa flower heads which are each enveloped in four to six woolly phyllaries. Each head contains up to 8 tubular yellow flowers up to a centimeter long. The fruit is a densely hairy achene which may be nearly 2 centimeters long, including its pappus of long bristles. Tetradymia spinosa Tetradymia spinosa is a species of flowering plant in the aster family known by the common name shortspine horsebrush. It is native to the western United States, especially the basins and plateaus west of the Rocky Mountains. It grows in sagebrush, woodlands, and scrub habitat, often among shadscale in alkaline areas such