Wright's Thimblehead. Hymenothrix wrightii, Sunflower Family: ( Asteraceae ) , Wright's Thimblehead. Also Called: Wright Beeflower. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Hymenothrix wrightii is a biennial, perennial herb up to 3 1/2 feet tall. Its 1/2 to 3/4 inch wide flower heads contain white or purple-tinged bracts. Their lobes are linear, and spreading Its anthers are about 1/16 inch thick and a dark red to purple in color. Wright's Thimblehead's basal green leaves are alternate and dissected into narrow lobes. Its lower leaves are usually larger and more numerous. Quick Notes: Height: Up to 3 1/2 feet tall. Each plant spreads up to 18 inches wide. Flowers: White 1/2 to 3/4 inch wide flower heads contain white or purple-tinged bracts. Flowering Time: Late June - October in Yarnell, Arizona. Leaves: Basal and cauline, alternate, green leaves about 2 - 4 inches long and about 1/16 to 1/8 inches wide. Found: Native of the USA (AZ, CA, NM, TX). Also found in Northern Mexico in northern Sonora, northern Chihuahua, Baja Norte, & Baja California. Hardiness: USDA Zone 3a: to -39.9 �C (-40 �F) USDA Zone 3b: to -37.2 �C (-35 �F) USDA Zone 4a: to -34.4 �C (-30 �F) USDA Zone 4b: to -31.6 �C (-25 �F) USDA Zone 5a: to -28.8 �C (-20 �F) USDA Zone 5b: to -26.1 �C (-15 �F) USDA Zone 6a: to -23.3 �C (-10 �F) USDA Zone 6b: to -20.5 �C (-5 �F) USDA Zone 7a: to -17.7 �C (0 �F) USDA Zone 7b: to -14.9 �C (5 �F) 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) Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Sun Exposure: Full Sun Elevation: 4,000 to 8,000 feet. Habitat: Desert soil, rock, does well in loose soil on slopes. Miscellaneous: Flowering Photos Taken September 19, 2006. Yarnell Arizona.

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