1. Cardamine latesiliqua, n. sp.

Varying in size from four inches to over two feet. Rootstock stout, spongy, as thick as the finger, often branched at the top, and each division furnished with a rosette of densely-crowded radical leaves. Flowering stems few or many, arising from the top of the rootstock, erect or slightly spreading, leafy. Radical leaves 3–6 inches long, ⅓–⅔ inch broad, variable in shape, narrow linear-spathulate to nearly obovate-spathulate, gradually narrowed to the base, coarsely and sharply serrate in the upper portion, very thick and coriaceous, margin and midrib and sometimes the whole surface more or less villous-pubescent. Cauline leaves smaller, lanceolate, nearly entire. Flowers rather large, white, very numerous. Pedicels ¼–½ inch long. Petals nearly ½ inch long, spathulate, on long claws. Pods very numerous, suberect, usually curved, somewhat swollen, 1½–2½ inches long, ⅕–¼ inch broad. Seeds numerous, compressed, reddish-brown.

Hab. Nelson Mountains. Mount Arthur, not uncommon between 4,000–5,500 feet; Mt. Owen, abundant on limestone rocks above 3,500 feet; Raglan Mountains, altitude 5,000 feet.