44 THE CRUCIFER FAMILY. [Thlatpi. 



small auricles. Flowers usually larger than in the last two. Pod about 

 3 lines long, but not so broad as in T. perfoliatum, especially at the base, 

 the wings rounded at the top, leaving a broad but not a deep notch be- 

 tween them. Style prominent. Seeds 6 or 8 in each cell 



In mountain pastures, in limestone districts, in Europe, extending 

 northward to southern Sweden, and eastward to the Himalaya, In 

 Britain chiefly on the hilly mountains of England, in Wales and Scot- 

 land. PL summer. [Slight varieties, depending on the depth of the 

 notch of the pod and length of the style, have been regarded as species 

 by Borne authors.] 



XVIII. TEESDALIA. TEESDALIA. 



Dwarf annuals, with white flowers, two petals larger than the two 

 others, as in Tim's; but the longer filaments have a scale-like appen- 

 dage near their base, and the pod has 2 seeds in each cell. 



A genus confined to two European species. 



1. T. nudicaulis, Br. (fig. 99). Common T. Leaves radical and 

 spreading, about half an inch long or but little more, usually pinnate, 

 the terminal lobe larger, obovate or orbicular, glabrous or with a few 

 stiff hairs. Flower-stems 2 or 3 inches high, erect and leafless, or the 

 lateral ones rather longer, ascending, with 1 or 2 small entire or 

 pinnate leaves. Flowers very small. Pods in short racemes, nearly 

 orbicular, about 1$ lines in diameter, flat, narrowly winged round the 

 edge, and notched at the top. 



On sandy and gravelly banks and waste places, in central and southern 

 Europe and western Asia. Rather generally distributed over England 

 and southern Scotland, though not a very common plant, and not in 

 Ireland. FL at any time from spring to autumn. 



XIX. IBERIS. CANDYTUFT. 



Glabrous or minutely downy annuals or branching perennials, with 

 narrow or pinnatifid leaves, and white or pink flowers ; two adjoining ex- 

 terior petals larger than the two others. Filaments without appendages. 

 Pod orbicular or oval, laterally flattened (at right angles to the narrow 

 partition), notched at the top, the valves boat-shaped, the keel or midrib 

 expanded into a wing ; the cells 1 -seeded, the radicle accumbent. 



A genus of several south European and western Asiatic species, some 

 of which are cultivated in our flower-gardens under the name of Candy- 

 tufts, and all readily known by the unequal petals. 



1. I. amara, Linn. (fig. 100). Bitter C. An erect, rather stiff, very 

 bitter annual, 6 to 12 inches high, with a few erect branches forming a 

 terminal flat corymb. Leaves oblong-lanceolate or broadly linear, wit h 

 a few coarse teeth, or slightly pinnatifid, seldom quite entire. Flowers 

 white. Pod nearly orbicular, the long style projecting from the notch 

 at the top. 



Common as a weed of cultivation In western, central, and southern 

 Europe. Appears occasionally in cornfields in England 

 especially in limestone districts, PI, with the corrt 



