142 



ON SEEDLINGS 



above, hairy with glandular jointed hairs ; limb hairy on both sides 

 with glandular jointed hairs. 



No. 1. Oval, obtuse, obscurely penninerved, obsoletely dentate- 

 serrate ; each serrature tipped with a gland or mucro. 



No. 2. More distinctly dentate-serrate, oval. 



No. 3. With broadly triangular, shallow and gland- tipped ser- 

 ratures, broadly oblong, obtuse. 



Senecio elegans, L. (fig. 476). 



Primary root tapering, with numerous lateral rootlets, annual. 

 Hypocotyl erect, terete, greenish, succulent, 1'25 cm. long. 

 Cotyledons spathulate-oblong, obtuse, subfleshy, 9 mm. to 1-2 cm. 

 long, 2-3 mm. wide, glabrous. 

 Stem herbaceous, annual. 



Leaves cauline, sparsely hairy at least 

 when young ; lamina subdecurrent on 

 the petiole ; petiole channelled above, 

 convex beneath, hairy at the margin, 

 dilated and sheathing at the base. 



No. 1. Rotund, obsoletely dentate- 

 serrate. 



No. 2. Subobovate, obtusely dentate. 

 No. 3. Larger and foreshadowing 

 division at the base. 



No. 4. Broadly oblong, obovate, ob- 

 tusely and shallowly lobate. 



No. 5. Irregularly pinnatifid, with a 

 small lateral obovate lobe, and a large 

 unequally triangular, obtuse, shallowly 

 lobulate terminal segment ; lobes very obtuse, obsoletely mucronate- 

 dentate along the ends, revolute at the margin. 



No. 6. Similar with two small alternate, lateral segments, 

 revolute at the margin. 



No. 7. Lyrate-pinnatifid, revolute at the margin, with four 

 alternate segments ; terminal segment much smaller than in the 

 preceding leaves ; lobes angled or dentate along the apex. 



No. 8. Lyrate-pinnatifid, oblanceolate in outline, revolute at the 

 margin ; segments gradually smaller from the terminal, to the very 

 small, basal ones, angled and mucronately dentate along the ends. 



Senecio neelgherianus, DC. 



Cotyledons spathulate, obtuse, tapering to the base, glabrous, 

 pale green, 1-1 cm. long, 4*5 mm. wide. 



FIG. 476. Senecio elegans. 

 Half nat. size. 



