A low glabrous nearly acaulescent perennial herb, arising from a deep tuber, with ter-nately decompound leaves, usually a single-leaved involucre, and small umbels of white flowers. Calyx-teeth obsolete. Petals flat, obovate or spatulate, entire. Fruit nearly orbicular, broader than long, notched at both ends, glabrous. Carpels incurved at top and bottom, with 5 slender ribs and 1-3 small oil-tubes in the intervals. [Greek, spring-born.]

A monotypic genus of central North America.

1. Erigenia BulbÚsa (Michx.) Nutt. Harbinger Of Spring

Fig. 3165

Sison bulbosum Michx. Fl. Bor. Am. 1: 169. 1803. Erigenia bulbosa Nutt. Gen. 1: 188. 1818.

Stem scapose, 3'-9' high, bearing a leaf invo-lucrate to the umbel. Basal leaves 2-4, petioled, ternately divided into thin oblong obtuse segments, the involucral one similar, smaller, short-petioled; petioles much dilated and sheathing at the base; umbels mostly compound, of 1-4 slender rays; involucels spatulate or sometimes folia-ceous; pedicels very short in flower, 1"-2 1/2" long in fruit; fruit about 1" long and 1 1/2" broad.

Ontario to the District of Columbia and Alabama, west to Minnesota and Kansas. Feb.-April. Turkey-pea. Pepper-and-salt.

1 Erigenia Bulb Sa Michx Nutt Harbinger Of Spring 1507