WHITE FOUR-O'CLOCK
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File Size: 98 KB |
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Mirabilis albida (Walt. ) Heimerl
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[=Mirabilis hirsuta (Pursh ) MacMill.] |
Konza Prairie, Riley County, Kansas |
Perennial |
Height: 8-48 inches |
Family: Nyctaginaceae - Four-o'clock Family |
Flowering Period: June, July, August, September,October |
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Stems: | | Erect or ascending, few or highly branched, glabrous or sparsely to densely hirsute or long-pilose, often glaucous. | Leaves: | | Opposite, simple; petioles of principal leaves 0 to 1.6 inch; blades green to blue-gray, linear-lanceolate to oblong-lanceolate or ovate, 1.2 to 4.5 inches long, 1/8 to 1 inch wide, thin to thick, base attenuate or cuneate to round, truncate, or cordate, margins entire to nearly wavy, tip acute, round, or obtuse, surfaces glabrous, viscid-pubescent, or hirsute. | Inflorescences: | | Cymes, axillary or terminal, few-branched; bracts 5, usually connate, green or papery; peduncles 1/25 to 1 inch, viscid-pubescent to puberulent with curled hairs; involucres 1/6 to 1/4 inch at flowering, 1/3 to 3/5 inch in fruit, sparsely to densely pubescent. | Flowers: | | 1-3 per involucre; perianth funnelform to campanulate; calyx white to pink or rose, 1/3 to 2/5 inch; stamens 3-5; stigmas capitate. | Fruits: | | Achenes, brown to dark brown, obovoid, 1/6 to 1/5 inch, hard, 5-ribbed, pubescent, angles usually tuberculate, sometimes merely rugose or smooth, sides tuberculate. | Habitat: | | Tallgrass prairies and rocky sites in oak-hickory woodlands | Distribution: | | Principally east 1/2 of Kansas | Origin: | | Native | Comments: | | Mirabilis albida is highly variable throughout its range.
Mirabilis, wonderful, and albida, whitish, alluding to the color of the stems and leaves. |
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White four-o'clock | ![](thumbnails/narrowfour.jpg) | 59 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock flower | ![](thumbnails/umbrellawort4.jpg) | 55 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock inflorescence | ![](thumbnails/albida.jpg) | 83 KB | Morris County, Kansas |
| White four-o'clock fruit | ![](thumbnails/albida2.jpg) | 38 KB | Morris County, Kansas |
| White four-o'clock | ![](thumbnails/narrowfour2.jpg) | 62 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock leaves | ![](thumbnails/albidaleaves2.jpg) | 54 KB | Morris County, Kansas |
| White four-o'clock flower | ![](thumbnails/narrowfour3.jpg) | 52 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock fruit | ![](thumbnails/narrowfourcalyx.jpg) | 50 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock leaves | ![](thumbnails/narrowfourleaves.jpg) | 86 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock leaves | ![](thumbnails/narrowfourleaves2.jpg) | 153 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock leaves | ![](thumbnails/Mirabilis_albida11.jpg) | 123 KB | Wabaunsee County, Kansas |
| White four-o'clock leaves | ![](thumbnails/Mirabilis_albida13.jpg) | 113 KB | Konza Prairie, Riley County, Kansas |
| White four-o'clock flower | ![](thumbnails/Mirabilis_albida5.jpg) | 64 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| White four-o'clock leaves | ![](thumbnails/Mirabilis_albida17.jpg) | 152 KB | Marshall County, Kansas |
| White four-o'clock | ![](thumbnails/Mirabilis_albida18.jpg) | 133 KB | Marshall County, Kansas |
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