23
Feb
2010
Flourensia cernua - tarbush
Trees and shrubs | Magnoliopsida

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
Top
Trees and shrubs
Ziziphus jujuba Mill - jujuba

Deciduu tree, 5.12 m high. Stalk annually, thin, 2-3 mm diameter, pale green, glabra, geniculati. Leaves alternate, bright green, elliptical language-lanceolata, margine crenata, top obtuse or emarginat, the round or asymmetrical, 3-5 cm long; nervatiune arch, median rib and a pair of secondary ribs, pale green stalks, 5-7 mm .

 
Rosmarinus officinalis L.

Evergreen shrub, 50 - 300 cm, stem erect, latita to the very ramified, in the lower trunk bark is exfoliating in longitudinal strips, dark brown. The leaves are coriacee, persistent, Sesia, linear

 
Russelia equisetiformis

Bush, 60-150 cm tall. Branches green, thin, pubescent, with 4.12 edges. Leaves pubescent, with some softwood apuncte, leaves from the branches are placed 3.6 in each verticil, language ovat-elliptic, 8.5-16 x 6-9 mm, top acute, sparsely toothed, leaves are opposite dinsre top Lujerul, linear, whole.

 
Symphoricarpos - Hurmuz

Shrubs decide, prostate or erect, 90-120 cm, originating in the U.S.. Buds scaly, 1.5 mm long. Leaves simple, opposite, short petiolate, 7 cm long. Raceme blossom. Campanulata Flowers in raceme children. Calyx tube slightly globos; Corola campanulata, 4-5 lobes. Fruit drupe, 1-1.5 cm in diameter, S. albus and S. occidentalis fruits white, pink-coral S. orbiculatus fruit. A fruit contains two seeds oblongata.

 
Eriobotrya japonica Lindl

Small tree, 5-10 m high, trunk erect, divide, tomentoase branches, erect and espana, bark gray-brown, smooth, crown open, umbeliforma in adulthood. Leaves persistent, alternate, simple, elliptical language-lanceolata, margine evening, acuminata; nervatiuni lecundare are thick and deep language that seems inflated between them

 
Magnoliopsida
Sedum acre

Sedum acre - perennial species, succulent, native to Europe and the Mediterranean Basin, from 600 to 2200 m altitude, common dry soil, sand, walls, rocks and limestone soils.

 
Ziziphus jujuba Mill - jujuba

Deciduu tree, 5.12 m high. Stalk annually, thin, 2-3 mm diameter, pale green, glabra, geniculati. Leaves alternate, bright green, elliptical language-lanceolata, margine crenata, top obtuse or emarginat, the round or asymmetrical, 3-5 cm long; nervatiune arch, median rib and a pair of secondary ribs, pale green stalks, 5-7 mm .

 
Chorisia speciosa

Deciduu tree, 9-18 m high, crown iregulata, spherical, pyramid. Bark is thin, green, gray thorns present on the trunk and branches. Leaves alternate, palmately-compound, 5-7 folio, folio elliptic, margin evening, nervatiune pinnate, green, autumn remain ever green. Flowers solitary, axillary, hermaphrodite, pentamere, actinomorfe, pink or white.

 
Stachys palustris L. - marsh Jales

Herbaceous perennial, rhizome tuberizat, crawler. Stem erect, rarely branched, tetragon, dark pink-purple, with scrub edge stem, 30-120 cm tall. Caulinare upper leaves are Sesi, amplexicaule, narrow-lanceolata, evening and slightly wavy edge, basal leaves are short stalks.

 
Pedicularis rostrata-capitata

  Pedicularis rostrata-capitata - grows on alpine and subalpine meadows, cave sites, 1800-2400 m altitude.

Pedicularis rostrata-capital belongs to the family Orobanchaceae, which contain parasites or semiparazite, with or without chlorophyll, leaf bracteiforme.

 
   Add to iGoogle
Last posts

Categories

Links