Lichtenstein has established the fact that from the egg of the Aphis of Pistachio galls, Anopleura lentisci, is hatched an apterous insect (the gall-founder), which gives birth to young Aphides (emigrants), and that these, having acquired wings, fly to the roots of certain grasses (Bromus sterilis and Hordeum vulgare), and by budding underground give rise to several generations of apterous insects, whence finally comes a winged brood (the pupifera).
Hordeum - Grasses, of which the Barley is the most familiar type, few of ornamental value except H. jubatum (Squirrel-tail Grass), which has long feathery spikes.
Some examples - avena sativa is a product derived from oats, triticum vulgare germ oil is from wheat, and hordeum vulgare extract is made from barley.
