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Ch. 39 Plant Responses to Internal and External Signals
Ch. 39 Plant Responses to Internal and External Signals

... or winter) only when the light period is shorter than a critical length ex. poinsettias, chrysanthemums, some soybeans Long­day plants ­ a plant that flowers (usually in late spring or  early summer) only when the light period is longer than a critical  length ex. spinach, radish, lettuce,iris Day­n ...
Conservation Action Plan - Fairchild Tropical Botanic Garden
Conservation Action Plan - Fairchild Tropical Botanic Garden

... usually exserted beyond the corolla tube, rarely included; five unequal length anthers most often exserted. Sepals are acute to obtuse, mucronate but never caudate (Wunderlin 1998). Nectar disk surrounds the ovary containing 4 ovules. Fruit is a septifragal dehiscing capsule (Judd et al. 1999); seed ...
Juniper Parsoni
Juniper Parsoni

... mound up to 2 to 3 feet tall and 4 to 10 feet wide. Junipers are an important element in the landscape because they add a unique texture that combines well with other plants. Parsoni is excellent for use as a ground cover and erosion control on large to small slopes and embankments. It can be plante ...
plants - Maaslandcollege
plants - Maaslandcollege

... As you can see, the seed is completely dry and can’t be opened easily. This way seeds can rest for years. If you want to take a look at the inside, you need to first place it in water for a day so that they can suck up the water and become soft. - Take a bean that has been placed in water for a day. ...
Tropicals - Greenstock Nurseries
Tropicals - Greenstock Nurseries

... An interesting single stem tree aloe that flourishes in inhospitable conditions, and produces incredible branched flower racemes. Sometimes confused with Aloe ferox. Full sun Dimensions: A small tree to 4 m generally but it has been noted as reaching 6 m on rare occasions in its natural habitat. Flo ...
Flora of South Australia (5th edition): Passifloraceae
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... elongate; stamen 5 (–8); filaments connate at base and surrounds or is adnate to the androgynophore; anthers linear, ovate or oblong, 2-celled; ovary borne on the androgynophore unilocular, placentation parietal; styles and stigmas 3 (–4); styles free or united at the base. Fruit a berry (in S.A.), ...
Plant Propagation - University of Arizona
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... serious threat to humid forests (SANTOS et al. 1986; ANDERSON & GARDNER 1999). It is an herbaceous perennial, reaching 2 m height, with 30 cm long spikes and numerous aromatic redorange flowers (PRESS & SHORT 1994). The perennial structure is formed by a variable number of corms (round and solid sto ...
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... region where iron ore is extracted from several mines. He there encountered two unknown species of Meconopsis growing on alpine stony slopes. He is convinced these are new species, although they are as yet unpublished. He has named one plant M. pulchella because of the beautiful flowers and also its ...
Cedar Valley Iris and Daylily Society
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CHAPARRAL ECOSYSTEM
CHAPARRAL ECOSYSTEM

... world with a Mediterranean climate. These areas are located in continents that are between 30° and 45° North latitudes and include California, central Chile, the Cape region of South Africa, southwestern Australia, and the Mediterranean area itself. The Mediterranean climate is characterized by hot, ...
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garden curriculum

... Read the following story: Once there was a beautiful lake in China. In its waters grew the sacred lotus plant. Each year, seeds from the lotus flower fell into the water and sank to the muddy bottom. Over many years, the lake dried up. The lotus seeds, which were very hard and covered with a tough o ...
Al-Youssef and Hassan
Al-Youssef and Hassan

... mm (0.28–0.47 0.47 in) long at the axils of the leaves. The flowers are yellow- orange nge and fragrant, 20 mm (0.79 in) in diameter, growing from a long slender stalk in groups of eight to ten. They have five sepals and five petals, four of them clearer and rhomboid ovate, the fifth elongated, with ...
B A C D
B A C D

... rhizomes. Culms: Slender, semi-terete to sharply triangular, smooth below, roughened above, 1.5-8 dm tall, exceeding the leaves, aphyllopodic. LEAVES: Several. Blades: Flat with slightly revolute margins, 1-2.5 mm wide. Sheaths: Tight, thin, brownish, truncate to shallowly concave at the mouth. BRAC ...
Growth Stage and Diagnostics
Growth Stage and Diagnostics

... without noticeable “goose-necking” of the plant. Older and taller corn plants are less likely to straighten up, but will instead gooseneck as the upper stalk internodes continue to elongate. The goosenecking or curvature of the stalk results from a hormonally driven response to the nearly horizontal ...
Camellias - Garden Science
Camellias - Garden Science

... die back from the tip until the whole plant dies. Roots of an affected plant will be dark brown and brittle, and contain few white fibrous roots essential for a healthy plant. Two fungal diseases of flowers are of concern because of the importance of Camellias for their flowers. Botrytis cinerea cau ...
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Perovskia atriplicifolia



Perovskia atriplicifolia (/pəˈrɒvskiə ætrɪplɪsɪˈfoʊliə/), commonly called Russian sage, is a flowering herbaceous perennial plant and subshrub. Although not a member of Salvia, the genus of other plants commonly called sage, it is closely related to them. It has an upright habit, typically reaching 0.5–1.2 m (1 ft 8 in–3 ft 11 in) tall, with square stems and gray-green leaves that yield a distinctive odor when crushed, but it is best known for its flowers. Its flowering season extends from mid-summer to as late as October, with blue to violet blossoms arranged into showy, branched panicles.Native to the steppes and hills of southwestern and central Asia, it was introduced to cultivation by Vasily Perovsky in the 19th century. Successful over a wide range of climate and soil conditions, it has since become popular and widely planted. Several cultivars have been developed, differing primarily in leaf shape and overall height; 'Blue Spire' is the most common. This variation has been widely used in gardens and landscaping. P. atriplicifolia was the Perennial Plant Association's 1995 Plant of the Year, and the 'Blue Spire' cultivar received the Award of Garden Merit from the Royal Horticultural Society.The species has a long history of use in traditional medicine in its native range, where it is employed as a treatment for a variety of ailments. This has led to the investigation of its phytochemistry. Its flowers can be eaten in salads or crushed for dyemaking, and the plant has been considered for potential use in the phytoremediation of contaminated soil.
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