Scientific Name - Cassia angustifolia
Synonyms - Cassia Senna
Popular name - Senna, nilavari, Indian Senna.
Distribution and Habitat - indigenous species in North Africa.
Description - undergrowth, 1 m high. Leaves compound, pinnate. Yellow flowers arranged in terminal raceme erect. Frcut bean, 3.5-6.5 x 1.5 cm, dark green and then brown, a pod contains 5-7 seeds, smooth, dark brown. 2n = 28
Requirements - exhibitions sunny.
Management - the plants have a child, first child to be made in 50-70 days and the second at 130-150 days.
Propagation - by seeds. Before sowing, seeds should be treated with Captan, and wetted for 24 hours for a uniform germination, it looks at 30 cm distance and 2.5 cm depth, germination takes place in three days.
Pests and diseases - alternatinghe alternated, Phyllosticta sp., Cercospora sp. Catopsilia pyranthae.
Properties and Uses - leaves and fruits are used as laxatives and purgatives.
Trees and shrubs
Dalechampia spathulata is a shrub of the Euphorbiaceae family. Most species belonging to the genus Dalechampia multiply naturally by seeds.
Leycesteria formosa Wall.
Leycesteria formosa, originating from the Himalayas and southwestern China. The species cultivated as ornamental gardens.
Hydrangea - Hortensia
Genus includes 80 species, the most popular are H. macrophylla, H. arborescens, H. paniculata and H. quercifolia. Shrub or voluble species with opposite leaves. Flowers solitary or grouped in inflorescences type corymb, Raceme. Ovary compound, 2-10 rags, below. Capsule truncata. Seeds numerous, ribbed.
Bush deciduu, wood. Iregulata crown, branches couples glabra, 4-5 m high. Leaves alternate, simple, rough, 12 x 2-4 cm long, the upper part at first is tomentoasa then becomes glabra, opaque green, the underside is silver viloasa easy.
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.
Liquidambar styraciflua - a native of North and Central America, grows in forests of Pinus sp. and Quercus sp. 900 to 200 m altitude.
Fraxinus excelsior - Ash
Deciduu tree, 30-40 m high, stem right, branched at the top, crown ovoid, large and rare. A young bark is smooth, light gray green and mature forms at the thick crust with a small crack, dark color. Lujerii round, flattened at the bud, glabra, green-olive trees, with dark buds.
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.