This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Annual or perennial, diffusely spreading or prostrate herbs, the foliage finely pubescent or glabrous, the stipules short or elongated, the small flowers in dichotomous cymes, with bracts similar to the leaves. Flowers manifestly pedicelled. Sepals distinct or nearly so, erect, cuspidate or abruptly tipped, not awned. Stamens mostly 5, borne at the base of the ovary. Styles united nearly to the stigmas. Utricle nearly or quite enclosed by the calyx. [Greek, star-Anychia.]
Four known species, of the southeastern United States. Type species: Anychiastrum riparium (Chapm.) Small.
Anychiastrum montanum Small, Torreya 10: 230. 1910.
Annual or biennial, minutely pubescent. Stem branched at the base, the branches spreading, diffuse, 2'-8' long, slender, purplish; leaves spatu-late to elliptic-spatulate, acuminate or acutish, 2"-5 1/2" long; stipules silvery; calyx 3/4" long in fruit; sepals ovate to oblong-ovate, glabrous, abruptly tipped, but not cuspidate.