Scientific Name - Solidago caesia L.
Synonyms - Solidago axillaris Pursh.
Popular names - blue-stemmed goldenrod, vara de oro montanòsa.
Distribution and Habitat - grows naturally in dry soils on roadsides from Nova Scotia to Minnesota, south Florida and Texas.
Description - Perennial species, rhizome. Stems slender, purple or glauca, glabra, branched, 30-100 cm tall. Leaves alternate, sessile, oblong-lanceolate or lanceolate, long acuminata, smooth, toothed, 5-15 cm long. Flowers in axillary or raceme groups, stem 2-10 mm involucrului bracts linear, ligulate flowers 1-6, yellow, tubular flowers 3-9, yellow. Blooms in August-October. Fruit achenes, pubescent, 2-3 mm long Papus.
Tolerances - shade and frost.
Requirements - prefers semi-shade, clay soil, rich and lightor gritty.
Propagation - by seed or split bush.
Diseases and pests - Solidago box to host plant is Microrhopala xerene, Prescott lobata.
Properties and Uses - Can be used as an ornamental species in parks and gardens, or cut flowers.
Curiosity - "Solidago" comes from the Latin solidarity for medicinal properties of species belonging to the genre.
Aster amellus - a species native to Europe and Asia, common in the collinear, dry and sunny at the edge boschetelor grow on limestone bedrock, from 0 to 800 m altitude.
Reseda lutea - herbaceous annual, papilla or glabrous. Hailing from Europe, increases alkaline soils, fields, dry ribs, from 0 to 2000 m altitude.
Acanthus mollis - Bear's Breeches
Native of the Mediterranean area, grows in gardens like ornamentals. Flower can be over 1.8 m tall, the purple-pink bracts contrasting with the white flowers. Prefer shelter and deep, moist soil.
Morinda citrifolia - originally from Queensland, Australia. The fruit is edible, from seeds to obtain oil insect repellent.
Acta spicata - a species native to Europe and Asia, grows in mountain forests in beech forests from 400 to 1500 m altitude.
Gentiana crucial - originated in southern, central and eastern Europe, it grows on sunny pastures on limestone soils, from 200 to 2000 m altitude.
Orobanche portoiliciana A. Pujadas & MB Crespo
Herbaceous species, stem 15-34 cm tall neramificata air, branched underground stem. Thin air stem, 7-12 mm diameter base, whitish at first glabra, glandular Vilos-time, 0.3 mm long hairs. Basal leaves 4.10 x 4.8 mm, triangulation until lanceolata, nested, leaves stems 8-14 x 2-5 mm length