File Size: 53 KB
Diodia teres  Walt.
McPherson County, Kansas
Height: 4-20 inches
Family: Rubiaceae - Madder Family
Flowering Period:   July, August, September
Also Called: Poorjoe, buttonweed.
Stems: Erect; branches prostrate to ascending or spreading, glabrous or usually finely pubescent.
Leaves: Opposite, entire, narrowly lanceolate to linear, .8 to 1.6 inches long, 1/8 to 1/3 inch wide, stiff, mostly sessile; margins rough, often rolled under, fringed with minute bristles; tip pointed to tapering-pointed, bearing bristle; stipules several to many, inconspicuous, long, thread-like, reddish-brown, sheathing stem.
Inflorescences: 1-3 in upper leaf axils, sessile.
Flowers: Sepals 4, unequal, ovate to lanceolate, 1/16 to 1/12 inch long, fringed; corolla funnel-form, 1/6 to 1/4 inch long, pale purple, pinkish-purple or rarely white; lobes 4; stamens 4, usually protruding; stigma head-like.
Fruits: Nutlets, 2, top-shaped, 1/10 to 1/6 inch long, reddish-brown, hairy, each 1-seeded; sepals persistent.
Habitat: Pastures, prairies, waste areas, roadsides, open woods, fields; dry, sandy or rocky soils.
Distribution: Principally east 1/2 of Kansas.
Origin: Native

Rough buttonweed flower and leaf
57 KB
McPherson County, Kansas
Rough buttonweed leaves
70 KB
McPherson County, Kansas
Rough buttonweed
49 KB
McPherson County, Kansas
Rough buttonweed
94 KB
McPherson County, Kansas
Rough buttonweed
87 KB
Reno County, Kansas