Science and Life

صفحه اصلی تبیان شبکه اجتماعی مشاوره آموزش فیلم صوت تصاویر حوزه کتابخانه دانلود وبلاگ فروشگاه اینترنتی

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- Yarrow
- row Achillea millefolium (Asteraceae) A drought tolerant perennial herb native to Europe, it has naturalized throughout temperate North America. The species name, millefolium-of a thousand leaves-describes the fine, f...
- Wine Cup
- Cup Callirhoe involucrata (Malvaceae) A hardy, drought tolerant, sprawling perennial native to Texas and the central United States. The numerous trailing stems spread vinelike over the ground originating from a carrot...
- Wallflower
- A bushy biennial or perennial variety native to the Canary Islands, but has naturalized throughout much of northern North America. A charming species with an abundance of vivid ...
- Tuber Vervain/Stiff Vervain
- A hardy, upright perennial native to Brazil and Paraguay which has naturalized throughout the southeastern United States. The intense, deep purple to magenta flowers are numerous produ...
- Toadflax/Spurred Snapdragon
- An erect, slender annual native to Morocco, which has naturalized throughout the United States. Tiny, delicate flowers with long spurs glisten from short spikes. Flowers come i...
- Tidy-Tips
- A short, hardy annual native to California, but can be grown as far east as Texas. Seed should be sown after the last frost for best results. The attractive yellow flowers are isolat...
- Tickseed/lance-leaved Coreopsis
- An erect, drought tolerant perennial which can also withstand prolonged periods of moisture. Native to the United States, east of the Rocky Mountains, it is now found throughout N...
- Texas Paintbrush
- An upright, hairy annual, perennial or biennial herb native to Texas with single erect stems and a slender taproot. The terminal red-orange flower is a misconception. Actuall...
- Texas Bluebonnet
- Lupinus texensis (Fabaceae). A hardy winter annual native to Texas. Adopted as the "State Flower of Texas", this is the most commonly seen variety along roadsides and in uncultivated pastures throughout t...
- Tahoka Daisy/Prairie Aster
- Machaeranthera tanacetifolia (Asteraceae). A hardy upright to sprawling annual native to the mid-western United States. This variety is easy to recognize by the dense, compact leaves which are deeply divided into m...
- Sweet William
- A perennial variety which usually performs as an annual. Native to Europe, it has escaped cultivation and adapted to all regions of the United States. The brilliant little flowe...
- Sweet Alyssum
- A hardy annual native to Southern Europe, but has naturalized throughout the United States. Dense clusters of tiny snow-white flowers bloom continuously throughout the growing sea...
- Standing Cypress
- Ipomopsis rubra (Polemoniaceae). A sturdy, upright perennial variety native to the southeastern portion of the United States. The brilliant red, tubular flowers are marginally spaced throughout the entire length of...
- Showy Primrose
- Oenothera speciosa (Onagraceae). A hardy, upright to sprawling perennial, native to the southeastern United States extending into Mexico. The four petalled flowers are soft pink, making a transition to glistening w...
- Shasta Daisy
- Chrysanthemum maximum (Asteraceae). A hardy perennial, forming dense colonies once established. Native to Europe, it has naturalized throughout all regions of the United States. The white petalled flowers with gold...
- Scarlet Sage
- Salvia coccinea (Lamiaceae). A hardy annual or tender perennial, native to Texas, and found throughout the southern portion of the United States. In warmer climates, this variety tends to act as an annual. The fluo...
- Scarlet Flax
- Linum rubrum (Linaceae). A hardy annual, native to northern Africa and southern Europe, it has naturalized throughout the United States. Once established this variety can tolerate immense heat and extremely dry con...
- Rose Mallow
- Lavatera trimestris (Malvaceae). A robust, fast growing annual, native to Europe, but has naturalized throughout the southeastern United States. Freely branching, it becomes covered with numerous, ice-white, pink o...
- Rose Angel
- Viscaria oculata (Caryophyllaceae). A hardy, upright annual very easy to grow from seed throughout much of North America. This Old World variety is regaining popularity for its consistent flowering over the long su...
- Rocky Mountain Penstemon
- Penstemon strictus (Scrophulariaceae).An upright perennial native to the western and central United States. The closely packed snapdragon-like, purple, tubular flowers are arranged on a sturdy spike. Prefers full ...
- Rocket Larkspur
- Delphinium ajacis (Ranunculaceae).A winter annual, native to southern Europe, it has naturalized throughout the United States. Larkspurs are distinguished by a backward projecting spur, formed by the upper petal o...
- Red Corn Poppy/Flanders Poppy
- Papaver rhoeas (Papveraceae). A hardy annual native to Europe, which has naturalized throughout the United States. The large 2-4 inch blooms are fire engine-red vividly marked with purplish-black centers individual...
- Purple Tansy/Lacy Phacelia
- Phacelia tanacetifolia (Hydrophyllaceae).A hardy annual, native to California but has naturalized throughout the western United States. The flowering portion of the stalk is curled, slowly unwinding to reveal lave...
- Purple Prairie Clover
- Petalostemum purpureum (Fabaceae). An upright perennial variety native to the north central portion of the United States. The unique lavender-purple flowers are concentrated on slender cones at the ends of wiry ste...
- Purple Coneflower
- Echinacea purpurea (Asteraceae). A robust, drought tolerant perennial, native to the midwestern and southeastern United States. flowers are arranged individually on sturdy, elongated stems with soft lavender or pur...
- Plains Coreopsis/Calliopsis
- Coreopsis tinctoria (Asteraceae). A hardy, upright annual, native to the southern United States, it has spread throughout much of North America. Leaves are finely divided occuring mostly in the lower portion of the...
- Perennial Lupine
- Lupinus perennis (Fabaceae) A hardy perennial, native to Maine and Southern Ontario extending westward throughout the central and mid-western regions of the United States south to Florida. Flowers are arranged on ...
- Ox-Eyed Daisy
- Chrysanthemum leucanthemum (Asteraceae). A hardy perennial, often forming dense colonies once established. A native of Europe, it has naturalized throughout all regions of the United States. The leaves are very thi...
- New England Aster
- Aster novae-angliae (Asteraceae). A robust, hardy perennial native to the northeastern portion of the United States. The large rosy-lilac to deep purple flowers have distinct yellow centers found clustered at the e...
- Moss Verbena
- Verbena tenuisecta (Verbenaceae) . A sprawling perennial, native to South America, and introduced to the southern United States. The small flowers have a rich violet to purple hue, clustered together forming a small...
- Missouri Primrose
- Oenothera missouriensis (Onagraceae). A hardy perennial native from Texas to Missouri and extending throughout much of central North America. A prolific bloomer with magnificent lemon-yellow flowers which last for ...
- Mexican Hat
- Hat Ratibida columnaris (Asteraceae). A robust, drought tolerant annual to perennial variety native to the mid-west and has naturalized throughout North America. The characteristic black, cone-shaped heads are surround...
- Mealy Blue Sage
- Salvia farinacea (Lamiaceae). A hardy, upright to sprawling perennial native to Texas, and easily grown throughout the southern portion of the United States. The densely congested violet-blue flowers are concentrat...
- Maximilian Sunflower
- Helianthus maximiliani (Asteraceae) .A stout, upright perennial native to Texas extending north throughout the central plains states. Numerous bright yellow 3 inch flowers are found on the upper half of unbranched ...
- Lemon Mint/Purple Horse Mint
- Monarda citriodora (Lamiaceae). A hardy annual or tender perennial native to the midwest and southern United States. A typical member of the Mint family with its distinctive square stems. Flowers are arranged in wh...
- Johnny-Jump-Up
- Viola cornuta (Violaceae).A compact annual or short-lived perennial, native to Spain and the Pyrenees Mountains. This variety has been used extensively in floral gardens and has escaped from cultivation to roadsid...
- Indian Blanket/Fire Wheel
- Gaillardia pulchella (Asteraceae). A hardy, drought tolerant annual native to the central United States. Easily established from seed, it forms dense colonies of brilliant red flowers with yellow rims. The flower d...
- Iceland Poppy
- Papaver nudicaule (Papaveraceae). A hardy perennial or biennial native to the arctic regions of North America, and extending eastward in cooler climates. The radiant white, yellow or orange flowers are individually...
- Gold Yarrow
- Achillea filipendulina (Asteraceae). An upright, drought tolerant, perennial, native to Europe but has naturalized throughout North America. The finely dissected leaves resemble those of a fern and are easily ident...
- Foxglove
- Digitalis purpurea (Scrophulariaceae).One of the loveliest, most important plant species that has been introduced from Europe and naturalized in various parts of North America. The flowers are numerous, on a spike...
- Five Spot
- Nemophila maculata (Hydrophyllaceae). A hardy annual native to California, easily grown from seed throughout the United States. The flowers are an attractive white with vivid purple spots at the tip of each petal. ...
- Farewell-to-Spring
- Clarkia amoena (Onagraceae).A short annual native to California which has spread into British Columbia. Requires very little moisture once established, but needs sufficient water during germination and early growt...
- Evening Primrose
- Oenothera lamarckiana (Onagraceae). A robust annual, of unknown origin which has naturalized throughout the United States. Flowers are light yellow borne on tall, sturdy spikes. Blooms are up to 2 inches across, op...
- Dwarf Red Plains Coreopsis
- Coreopsis tinctoria (Asteraceae) . A hardy, upright annual very easy to grow from seed throughout much of North America. This dainty little plant will burst alive in the spring covered with mahogany-red flowers. An ...
- Drummond Phlox
- Phlox drummondii (Polemoniaceae). A short, hardy, upright annual, native to Texas, but adapted throughout the southeastern United States. It is a variety that has been used extensively in European gardens for many ...
- Dense Blazing Star
- Liatris spicata (Asteraceae) .An erect perennial native to the eastern United States extending as far south as Louisiana. The stiff, cylindrical spike is heavily concentrated with deep rose-purple flowers. The bloo...
- Dames Rocket
- Hesperis matronalis (Brassicaceae) An upright, hardy perennial native to Europe, but has escaped cultivation and adapted throughout most of the United States. Delightful lilac-purple flowers are concentrated at the en...
- Crimson Clover
- Trifolium incarnatum (Fabaceae) An upright, winter annual native to Europe, but has naturalized throughout temperate North America. The deep red to scarlet flowers are tightly congested arising from an elongated s...
- Cosmos
- Cosmos bipinnatus (Asteraceae) A hardy, erect annual requiring very little moisture once established. A native of Mexico, it can easily adapt to all regions of the United States. The attractive flowers are a mixtu...
- Cornflower/Bachelors Button
- Centaurea cyanus (Asteraceae) A drought tolerant annual, native to Europe, which has naturalized throughout North America. The upper half of the plant is multi-stemmed, producing many flowers. Leaves are covered with ...
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