Scientific name - Saxifraga squarrosa Sieber.
Popular names - sassifraga delle Dolomiti, Sparrig-Steinbrech
Distribution and Habitat - endemic sub-species of sub-Eastern Alps, grows on limestone rocks and debris, from 1200 m to 2500 m altitude.
Description - herbaceous perennial, hermaphrodite. Stems branched. Leaves simple, entire, linear-oblong, subacute, suberecte. Caulinare Leaves alternate, pubescent, linear. Densely glandular-pubescent flowering stem, 1-5 flowers. Sepa glandular pubescent, twice shorter than petals, corolla composed of five petals, spatula, white, 3-4 x 4-6 mm. Blooms in June-July. Fruit capsule.
Herbaceous perennial species, dioecious. 5 cm diameter stalk. Leaves green to green-yellow with the main rib, which ends with a cylindrical Carcel which is longer than the tongue of the leaf, finished with a pitcher. Blossom panic or Raceme. Digestive glands are located inside the jar walls. Seeds are small and filiforme.
Cyclamen persicum is a tuberous perennial species, originated in Persia. Cordiforme leaves, 2-14 cm long, dark green, mottled with silver, long petiole. Flowers axillary, solitary, 5 petals ciclamen reflected color, red, white, purple, floral stem of 5-15 cm tall, blooming from late winter to early spring. Fruit capsule.
Physostegia virginiana - perennial species, rhizomatic, native to North America, grows on wet pastures.
Physostegia virginiana - cultivated as ornamental species in parks and public gardens.
Ageratum houstonianum - rods
Ageratum houstonianum is an ornamental species cultivated for borders, cut flowers or pots. In Europe it is cultivated as ornamental plants in the 1800.
Gossypium herbaceum - Cotton
Gossypium herbaceum - Cotton fiber is the most popular material obtained from this plant and the second is cotton oil rich in protein.
Dasiphora fruticosa - deciduu shrub, native of Asia, grows on wet soils and wet rocks.
Thunbergia alata - black-eyed Susan
Thunberg spelled - a species native to tropical Africa, but common as ornamental plants.
Solidago caesia - blue-stemmed goldenrod
Solidago box to - perennial species, native to North America, grows naturally in dry soils on roadsides.
Acer platanoides - norway maple
Acer platanoides - used as an ornamental species in parks and gardens, but also the green street.
In the United States was introduced around 1700 in East Pensilveniei. It was introduced as ornamental species, the green street, in many areas of culture out of control and become invasive species.