166 ON SEEDLINGS 



Stem herbaceous, erect, annual, hairy with deflexed hairs ; inter- 

 nodes elongated. 



Leaves simple, cauline, alternate, exstipulate, petiolate, almost 

 glabrous above, thinly hairy beneath ; petiole semiterete, channelled 

 above. 



No. 1. Pinnatifid or pinnatisect with linear segments. 



No. 2. Similar. 



Nos. 3 and 4. Pinnatisect, with slender segments. 



Nos. 5 and following. Bipinnatisect with slender segments . 



Succovia balearica, Medik. 



Hypocotyl erect, terete, but with a distinct rather deep furrow 

 along its whole length, from the edges of the cotyledons to the base, 

 glabrous. 



Cotyledons petiolate, with a bipartite lamina, unequal ; lamina 

 transverse with two orbicular or obovate, often unequal lobes, 

 consisting of lateral developments, growth in length being very 

 limited and represented by the undivided portion, the midrib termi- 

 nating at the base of the sinus. The rounded form of the lobes is 

 due to their shape in the globular seed as each lobe occupies about 

 half the area of the cavity. Each is traversed by two lateral nerves 

 from the midrib, which curve and unite with one another within 

 the margin. The base of the lobes is somewhat auricled, passing 

 into the narrow cuneate leaf-base. Petioles of unequal length, 

 rather deeply channelled above. 



Stem erect, herbaceous, slightly pubescent, with shallow ridges 

 from the bases of the leaves. 



Leaves, the first two opposite or alternate, five-lobed, with the 

 terminal lobe trifid, and the lateral ones oblong or ovate and slightly 

 toothed, a small basal lobe being sometimes present, glabrous. The 

 other leaves are alternate. 



Capsella Bursa-pastoris, Mosnch (fig. 170). 



Primary root long, tapering, colourless, with lateral rootlets, 

 annual. 



Hypocotyl subterranean. 



Cotyledons small, spathulate, obtuse, petiolate, glabrous. 



Stem undeveloped till the time of flowering. 



Leaves radical (ultimately cauline), alternate, exstipulate, petio- 

 late, coarsely hairy on both surfaces ; petioles convex beneath, 

 much flattened above, broad. 



Nos. 1 and 2. Entire with a rotund limb. After these an 



