|                    Mock bishopsweed, Herbwilliam
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                |                    Ptilimnium capillaceum  
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                |                    Apiaceae 
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                 Landscape Uses:
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                 Primarily recommended for natural landscapes and habitat restorations.  Also wet wildflower and butterfly gardens. | 
               
                Ecological Restoration Notes:  | 
               
              
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                | Availability: | 
               
              
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                 Available at native plant nurseries in central Florida. | 
               
              
                | Description: | 
               
              
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                 Small to medium annual herb. | 
               
              
                | Height: | 
               
              
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                 About 6-18 inches in height.  Usually taller than broad. | 
               
              
                | Growth Rate: | 
               
              
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                 Fast. | 
               
              
                | Range: | 
               
              
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                 Eastern and central United States west to Texas and south to Miami-Dade and Collier counties; West Indies. | 
               
              
                | Habitats: | 
               
              
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                 Swamps and wet disturbed sites. | 
               
              
                | Soils: | 
               
              
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                 Wet to moist, well-drained to poorly-drained sandy or organic soils, with humusy top layer. | 
               
              
                | Nutritional Requirements: | 
               
              
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                 Moderate; can grow in nutrient poor soils, but needs some organic content to thrive. | 
               
              
                | Salt Water Tolerance: | 
               
              
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                 Low; does not tolerate flooding by salt or brackish water. | 
               
              
                | Salt Wind Tolerance: | 
               
              
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                 Low; salt wind may burn the leaves. | 
               
              
                | Drought Tolerance: | 
               
              
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                 Low; requires moist to wet soils and is intolerant of long periods of drought. | 
               
              
                | Light Requirements: | 
               
              
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                 Full sun. | 
               
              
                | Flower Color: | 
               
              
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                 White. | 
               
              
                | Flower Characteristics: | 
               
              
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                 Semi-showy. | 
               
              
                | Flowering Season: | 
               
              
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                 All year. | 
               
              
                | Fruit: | 
               
              
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                 A pair of inconspicuous carpels pendent from a supporting axis. | 
               
              
                | Wildlife and Ecology: | 
               
              
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                 Larval host plant for black swallowtail (Papilio polyxenes) butterflies.
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                | Horticultural Notes: | 
               
              
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                | Comments: | 
               
              
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                 This self seeds and can be somewhat weedy. See also the Florida Wildflower Foundation's  Flower Friday page. See a 2019 post on the Treasure Coast Natives blog on dominant mudflat species including mock bishopsweed.
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