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Scientific Name - Tithonia rotundifolia Synonyms - Popular names - Mexico sunflower, girasole messicano. Distribution and Habitat - originally from Mexico and Central America. Description - The annual species, branched, pubescent, 1.8 m tall. Leaves alternate, entire or trilobite, lamina ovate, the attenuated, pale green, 5-12 cm long. Ligulate flowers 10-14, obovate to elliptical, orange to red-portocaliu1.5-3.3 cm long, tubular yellow flowers, pedicel length 18 cm. Blooms in July-September. Fruit achenes. Requirements - exhibitions sunny, fertile, well-drained soils. Management - are watered regularly during dry periods of the year. Propagation - by seed, is sown in April-May, germinate in 7-10 days. Garden Partners - Tagetes sp. Zinnia elegans, Salvia andplendens.
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Undergrowth; prostrata strain or creeping with Solon. Strains florifere, 2-14 cm without leaves or bracts 1-2. Leaves evergreen, alternate, lamina uninerva, coriacee, 4-7 x 10-20 mm, obovata or spatula, suborbiculare, top round, mucronata; petiole 2-4 cm. Asclepias fruticosa - shrub native from South Africa, introduced in the Mediterranean for textiles. Herbaceous perennial. Roots thin. Stem 30-100 cm tall, branched, slightly pubescent on the underside, becoming glandular-pubescent in the upper. Basal leaves bi or tri-Ternate, glauca, lobes 2-3-lobate, 1.5-4 x 1.5-4 cm, base cuneata, obovata, glabra green glauca and upper face, and pale green inside pubescent, hairy stalks. Herbaceous annual or perennial. Strain decumbenta - upward, often is wood based. Leaves alternate, entire or pinnate-sectors. Capital solitary and axillary. Involucre with bractei placed on 2-3 lines. Flowers tubular, orange. Ligula sterile flowers, yellow-orange, top with 4 teeth. Receptacle convex or flat. Acorn obovoide, densely-hairy. Ambrosia artemisiifolia - monoecious species, native to the United States, was introduced in Europe for medicinal purposes, was naturalized and became invasive, causing damage to crops of maize, sunflower and soybean. Undergrowth of 15-30 cm height. Leaves persistent, linear, dark green, 4-8 mm long, 4 on each ordered verticil. Campanulata Flowers arranged in raceme; Corola gamopetala, 4-6 mm long, dark pink, rarely white Portulaca grandiflora - annual species, succulent, native to Brazil. Can be used in parks and gardens as ornamental species for borders or pots on terraces species for sunny. Nepeta cataria has similar properties with valeriana, amaro-tonic and sedative antispasmotica. Nepeta cataria var. citronelol citriodora contains more essential oil used as perfume industry. Dalechampia spathulata is a shrub of the Euphorbiaceae family. Most species belonging to the genus Dalechampia multiply naturally by seeds. Erica canaliculata - shrub originating from South Africa, used as an ornamental species in parks and gardens. |
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