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Scientific Name – Flourensia cernua DC. Synonim – Common name(s) – tarbush, blackbrush, varnishbush, hojasé, Yerba del Hule. Distribution and Habitat – common (endemic) on dry plains to the Chihuahuan Desert, Arizona, California, New Mexico and Texas at elevation ranging from 400-2000 m. Is associated with Hilaria mutica, Larrea tridentate, Prosopis sp., Scleropogon brevifolius. It is found in limestone or calcareous, deeper soils. Description – deciduous shrub, erect to procumbent, 30 -200 cm tall, much branched. Twig light brown, gray, slender, resinous, pubescent; trunk gray to dark gray, glabrous, sparingly striate, resinous. Leaves alternate, simple, elliptical or oblong to oval, 1.6-2.5 x 0.6-1.2 cm, acute, margins entire, adaxially green and glabrous, abaxially paller and glabrous or pubescent, veins often black; petioles 1-2.5 mm long, puberulent. Inflorescences small, solitary. Flowers with 3 series bracts; bracts linear; ray flowers absent; disk flower 12-20, yellow, resinous. Flowering in July to December. Fruit achene, 0.5-1 cm long, oblong, compressed, villous; papus of 2-4 unequal bristles, 2.5-3.3 mm long. Growth rate – slow Requirements – prefers heavy, deep soils; full sun, light water. Propagation – by seeds. Properties and Uses – mature fruit is poisonous to sheep and goats. In Mexic, an infusion of the leaves is drunk frequently to treat various gastrointestinal ailments. Curiosity – the genus Flourensia, tribe Heliantheae, consist of 32 species of resinous shrubs that grow from southern United States south to Argentina and Chile. Bibliography A.Powell – Trees and Shrubs of the Trans-Pecos and adjacent areas- University of Texas Press, 1998 James Stubbendieck, Stephan L. Hatch, L.M. Landholt – North American Wildland Plants – University of Nebraska Press, 2003 Mahendra Rai, Maria Cecilia Carpinella – Naturally Occuring Bioactive Compounds- Elsevier Science, 2006
See also
 Trees and shrubs
Firmiana simplex
Firmiana simplex - also known as Sterculia platanifolia, was named in honor of Karl Joseph von Firmiana (1718-1782). Firmiana simplex - ornamental species grown in parks and gardens in shady and protected from winds exhibitions. Tilia cordata - Small-leaved lime, lime hill
Scientific Name - Tilia cordata Synonyms - Tilia parvifolia Ehrh., Tilia ulmifolia Purpose .. Names of people - small-leaved lime, lime sulfur, lime hill, Littleleaf Linden, Lindenbluten, Tiliae flos, Fleur de Tilleul. Distribution and Habitat - originating in Europe, grows on nutrient-rich soil in warm areas. Description - tree, 20 feet tall. Trunk as thick (can reach up to 1 m diameter). Bark on young specimens is smooth, gray to dark gray becomes mature specimens or brown, pitted. Crown oval, conical. Olive-green stems, at first pubescent then glabrata. Buds 4-6 mm long, usually two outer scales unequal, shiny, olive-green to red-brown, terminal bud is absent. Leaves alternate, simple, subrotunde - ovate, 5-7 c Tilia cordata - tree, native of Europe, increases in nutrient-rich soil in warm areas. Lime flowers are the most popular remedy for colds and flu, tea is used to treat headaches, anxiety and nervous tension. Prunus armeniaca - apricot
Prunus armeniaca - shrub or small tree, native of northeastern China, knew and cultivated worldwide for its edible fruit. The seeds of Prunus armeniaca extract oil used in perfume industry, cosmetics and pharmacy. Quercus serrata
Tree 15-40 m high, trunk 1 m in diameter. Subsesile leaves or stalks, stalks up to 3 cm long, glabru or glabrescent; language to narrow obovata ovata, ovat-lanceolata, 6-15 x 2.5-7 cm, margins evening, the round, top-acute acuminata. Nyssa sylvatica Marsh.
Dioecious tree, 25 meters high. Dark brown bark with deep cracks. Glabra or slightly hairy stalk, thin, red-brown, smooth; mugurele terminal 3-5 mm, nested, 6-8 scales visible, few pubescent and Chile, bicolori with red edges and the rest suprafatei green. Magnoliopsida
Centaurea leonida
Leonida knotweed grows on rocks in eastern Peloponnisos, Greece, the share of 550-600 m. In Greece, Centaurea comprises a total of about 140 species and subspecies endemic. Quercus cerris L. - Turkey Oak
Quercus cerris - a species native to south-eastern Europe, cultivated as an ornamental tree, singly or in small groups. Ceiba pentandra
Ceiba pentandra - tree, native of tropical America, seen as a species cultivated in the Philippines, growing in arid regions,forests and grasslands from sea level to 1000 m altitude. Ostrya carpinifolia
Ostrya carpinifolia - used as an ornamental species for gardens, parks and green street. Ostrya is derived from Greek 'Ostrya', referring to the shape of bracts that protect the fruit. Heliosperma pusillum
Heliosperma pusillum - herbaceous perennial, native to southern Europe, grows on limestone ravines, from 1000 to 2500 m altitude. |
 
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