Annual, with a single stem to several very slender erect stems ± 7·5-15-(25) cm. tall. Basal lvs ∞, rosulate, subcoriac., dark green (reddened when exposed); lamina broadly ovate- to obovate- spathulate, 20-40-(50) mm. long, narrowed into a broad flat petiole = or > lamina, 3-(5)-nerved. Cauline lvs few, narrowly oblong-spathulate; petioles shorter. Fls in 2-4-fld lateral or terminal involucrate umbels, or often the umbels densely 5-12-fld, each stem us. with a terminal umbel and 2 lateral ones. Umbels surrounded by a whorl of 5-7 oblong-spathulate lvs > fls. Calyx cut 3/4 way or almost to base into unequal lobes, the broadest spathulate, obtuse and ± foliaceous, the narrowest linear, acute and membr. Corolla white, us. with purple to dark red or violet veins, c. 12 mm. long, hardly > calyx, cut c. ⅔ way into narrow-oblong, obtuse lobes.