Pitcher's stitchwort

Description

Minuartia patula, common names pitcher's stitchwort or lime-barren sandwort, is an annual plant in the family Caryophyllaceae. It is native to sections of the eastern and central United States, primarily the lower Mississippi Valley, the southern Great Plains, and the Tennessee Valley, with additional scattered populations in Georgia, Virginia, Pennsylvania, and the southern Great Lakes region. Minuartia patula is found on limestone outcrops and in rocky barrens and glades. It is a small, delicate annual species with thin red stems up to 30 centimetres (1 ft) long, erect (upright) or ascending (trailing along the ground at first, then curving upwards). It very often has numerous stems crossing each other so as to form a clump of many stems. Leaves are in pairs, narrow and rarely more than 20 millimetres (0.8 in) long. Flowers are white, forming in the spring then quickly wilting. Minuartia patula is highly variable throughout its range, and multiple varieties have been named, though none of these is widely accepted today. Minuartia is a genus of flowering plants commonly known as sandworts in the family Caryophyllaceae. Minuartias are small annual or perennial plants which grow in otherwise inhospitable conditions such as on rocky ledges and in stony soil. The genus is widely distributed in the northern hemisphere, mainly distributed in Europe, in the Mediterranean region, and north Africa, southwest Asia, and the Caucasus Mountains. Many Minuartia species were formerly classed in the genus Arenaria, and the obsolete genus Alsine. In 2014, the polyphyletic Minuartia sensu lato was recircumscribed, with many of the species transferred to other genera, including Cherleria, Eremogone, Facchinia, Mcneillia, Minuartiella, Mononeuria, Pseudocherleria, Rhodalsine, Sabulina, and Triplateia. Minuartia sensu stricto is characterized by the following features: leaves linear-setaceous; 5 acute sepals with 3, 5, or 9-veins; 5 white petals; 3 styles, forming 3-parted capsules. The genus was named for Juan Minuart (1693–1768), a Spanish botanist and pharmacist.