Scientific Name – Flourensia cernua DC.
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.
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
Trees and shrubs
Aesculus hippocastanum - common horsechestnut
Aesculus hippocastanum - is used in parks and gardens, the tree line, solitary or in groups. The flowers are bees, and seeds contain starch, protein, tannin, saponin and edible oil, which can be manufactured soap, technical oil, glue, medicines. Species not produce forest wood is of poor quality.
Tilia platyphyllos - Large-leaved Linden
Tilia platyphyllos - thermophilic species, grows only in plain and low hills, Europe and western Asia.
Large-leaved Linden, used as decorative trees in parks, and street alignments.
Capparis spinosa L. - caper
Undergrowth, with root wood and lignificate stems at the base, erect in the basal portions. Leaves alternate, two stipele turned into thorns, persistent or obsolete, short stalks, oval or subrotund language, edge entire, flashy, green-glauca. Flowers solitary, peduncle long in upper leaf axilla; calyx of 4 sepa green, Corola of 4 white petals, stamens many red-purple color.
Syzygium aromaticum - clove
Small, oblong fruit with little pulp. The dried flower buds of this tree are the cloves of commerce. All parts of the tree are highly aromatic. It is used in the form of a paste or mixture as dental cement.
Diospyros kaki L. - Khaki
Monoecious tree, 6-12 m high. Trunk erect, conical crown, brown bark is exfoliating in small plates. Leaves fell, coriacee, alternate, language oval-elliptic, margin entire, top acuminata, the attenuated, shiny green on top and pubescent towards the bottom, 7-20 x 4.10 cm, petiole 1-1.5 cm long.
Kigelia is a genus with a singke species, which is cultivated as an ornamental tree.
Sausage tree is a tree whit a invasive root system, so keep it clear of buildings and paving.
Bush or undergrowth, 30-60 cm. Leaves petiolate, oblong-elliptic, entire, 25-30 x 7-10 cm, spiny-toothed, crenate or sinuous lobate, grooved records and white ribs. Blossom terminal or axillary, pyramidal spike. Flowers Sesi, yellow bractei large to ovata lanceolata. Calyx 8-10 mm. Corola yellow, 3.8-5 cm, corolla tube 3-3.5 cm, upper petal is erect, about 8 mm, biloba, lower petal is tri-lobate
Evergreen shrub. Branches erect. Leaves green, alternate or subverticilate, 6-21 x 2.5 cm, limb oblong, coriaceu, top acuminata, edge entire, nervatiune pinnate. Flowers arranged in terminal panicule, small flowers, hermaphrodite
Rosa 'American Pillar'
Rambler, 4-6 x 3 m. The simple flowers grouped in bouquets of flowers or solitary, 5-20, 5-6 cm diameter, red-fuchsia, deep red with a white spot in center, yellow anthers are visible. Leaves dark green, shiny, becoming purple before falling. Bloom once a year in June-July.