none-so-pretty
/ˌnʌnsəʊˈprɪti/noun
1A type of fabric used in dressmaking and furnishing, probably a worsted or lightish stuff. Now historical and rare.
2Chiefly North American. A kind of decorative haberdashery tape (more fully none-so-pretty tape), often woven in two colours or patterned with simple motifs, and typically used to dress furnishings. Now historical and rare.
3Any of several garden flowers, especially (a) London pride, Saxifraga× urbium (now rare ); (b) heartsease, Viola tricolor; (c) sweet william catchfly, Silene armeria. Compare nancy-pretty. Now chiefly North American.
Origin
Early 17th century. From none + so conj. + pretty.