VII. CRUCIFERS 87 
base. Pods ovate, 4 in., notched at the tip, margins winged. 
Seeds one in each cell ; radicle incumbent. 
Simla, in fields ; April, May. — Cultivated in all temperate regions. 
Cress is commonly cultivated in gardens, and often occurs as an escape. 
Native name halini. 
11. THLASPI. The Greek name for Cress. — N. temperate 
regions and the Andes. 
Annual or perennial, glabrous herbs. Stems erect. Leaves 
simple ; upper stem-clasping, base 2-lobed. Flowers small, white, 
racemed. Sepals erect, base equal. Petals clawed. Pods 
spreading horizontally, orbicular or ovate, flattened, margins 
winged, top notched; style persistent in the notch. Seeds 4-8 in 
each cell ; radicle accumbent. 
Stem-leaves toothed. Pod orbicular, § in. broad. Style very 
short . . . . . . . . . . . 1. T. arvense. 
Stem-leaves entire. Pod oblong-ovate, scarcely f in. broad. 
Style long . 2. T. alpestre. 
1. Thlaspi arvense, Linn . ; FI. Br. Lid. i. 162. Annual. 
Stems 6-18 in., simple or branched. Eadical leaves soon wither- 
ing ; stem-leaves oblong or lanceolate, 1-4 in., coarsely toothed, 
the upper ones prolonged at the base in two long, pointed, stem- 
clasping lobes. Pods ovate-orbicular, about \ in. broad including 
the wing, deeply notched ; style very short. Seeds 5 or 6 in each 
cell. 
Simla, in cultivated or waste ground, not common ; April-July. — Temperate 
Himalaya, 1000-10,000 ft. — Asia, Europe (Britain). 
A weed of cultivation. 
2. Thlaspi alpestre, Linn . ; FI. Br. Ind. i. 162. Perennial. 
Stems usually tufted, 6-12 in., stiff, rarely branched. Radical leaves 
ovate, orbicular or oblong, often toothed near the base ; stem- 
leaves oblong or ovate, f-1 in., entire, base prolonged in two 
short, obtuse lobes. Pods oblong-ovate, scarcely J in. broad 
including the wing, narrowed towards the base, notch broad ; 
style long. Seeds 4-8 in each cell. 
Simla, Mabasu, Narkunda; April-June. — Temperate Himalaya, 7000-12,000 
ft. — N. temperate regions (Britain) ; the Andes. 
