278 CRUCIFERAE 
1. C. didymus, (L.) J. E. Smith. Lesser Water Cress. Tufted, 
spreading on the ground, slightly hairy. Flowers quite small. Nat- 
uralized; in waste places. 
2. C. procumbens, Gilbert. Swine’s Cress. (C. coronopus, (L.) 
Karst.) Similar to No. 1. Pod with an elevated point at apex. Nat- 
uralized; in waste places. 
SECOND GROUP 
Fruit oval or globular, not flattened or only slightly so 
Flowers white or purple 
5. CAKILE, Gertn. 
Diffuse, smooth, fleshy, with purple or whitish-purple flowers. Pods 
two jointed, the upper joint larger. 
C. edentula, (Bigel.) Hook. (Fig. 5, pl. 54.) AmerIcAN SEA 
Rocker. Very fleshy and branching. Leaves long and narrow, rounded 
at apex, border sinuous or notched. Pod of two joints, each with a single 
seed. Sands at the sea shore. 
6. SUBULARIA, L. 
Small aquatic plant. Leaves all basal and awl-shaped. Stem few 
flowered. Pods oval or globose, seeds several. 
S. aquatica, L. Warer Awiwort. Plants growing in tufts in shallow 
water. Maine, New Hampshire, and northward. 
7. BERTEROA, DC. 
Herbs 1 to 2 ft. high, with forked hairs. Leaves narrow, not notched 
or toothed. Flowers in long terminal clusters. Petals deeply 2-cleft. 
Pod nearly globose or oval with a short style at apex. 
B. incana, (L.) DC. (Fig. 1, pl. 55.) Hoary Atyssum. Pods very 
numerous on short stiff spreading pedicels. In waste places. Introduced. 
Flowers yellow 
8 NESLIA, Desv. 
Erect or branching, velvety, hairs stellate. Leaves of the rosette ob- 
long, on long foot-stalks. Seed pod without wings. 
N. paniculata, (L.) Desv. (Fig. 6, pl. 55.) Nesria. Plant 1 to 
2 ft. high; stem leaves lance-shaped with broad arrow-shaped bases and 
no leaf stalk. Flowers small, yellow. Pods round, distinctly reticulated. 
Waste places. Introduced. 
g. CAMELINA, Crantz. 
Erect herb with soft hairs, simple or branched. Lower leaves with 
leaf stalks, upper without. Those of the rosette lance-elliptic, those 
of the stem lance-shaped, clasping the stem. Flowers small. Pod globose 
with a prominent style at apex. 
C. sativa, (L.) Crantz. Gotp or PLeasurE, Fatse FLAx. In fields, 
especially in those in which flax has been grown. Introduced from 
Europe. June-July. 
