White Nightshade. Solanum americanum, Caltrop Family ( Solanaceae ), White Nightshade: Also called: Solanum nodiflorum, American Black Nightshade. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Solanum americanum is a herbaceous annual plant, which can reach about 39 inches in height. It has poisonous, white 5-lobed flowers with a beak of yellow stamens. Its leaves are glabrous to fuzzy, oval, petioled. They can be smooth-edged to edged with large, rounded teeth. Quick Notes: Height: Up To About 2 - 3 feet. Spreading out to about 4 foot wide. Flowers: White in color. Sometimes purplish white. The flowers have 5 lobes, 5 stamens, and are 1 inch in diameter. The flowers have 5 fused petals, � inch across, with bright yellow stamens. Flowers grow on stalks in clusters or singly at the end of stems or branches. Flowering Time: April to October. Fruit: The fruits are round, black fruit.berries, 3/8 inch in diameter. Shape: Prostrate, branched, radiating to 5 feet from top of taproot, hairy, becoming nearly glabrous. Leaves: The entire green leaves are ovate to somewhat triangular, irregularly toothed, with wavy margins.. Poisonous. The leaves are 1 to 4 inches long by 2-3 inch wide. There are small hairs on the leaves especially on the margins. Found: Native to the USA (AL, AZ, CA, FL, GA, HI, LA, MO, MS, NM, NV, OR, TX, WA), USA+ (PR, VI), Also found in Canada (BC, MB). Also found in Mexico in northern Sonora, & northern Chihuahua. Hardiness: USDA Zone 8a: to -12.2 �C (10 �F) USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) Sun Exposure: Full Sun Elevation: 0 � 4,500 Feet. Habitat: On roadsides, yards. It also can be found in perennial fields and on cultivated land. Miscellaneous: Flowering Photos Taken April 21, 2009. Near Tortilla Flat, Arizona. Poisonous.

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