COMPOSITE 



159 



petioles short or none, winged for a great part by the decurrent 

 lamina, flattened above, dilated at the base. 



No. 1. With a short, broadly elliptic lamina, decurrent nearly 

 to the base of the petiole, obsoletely, distantly, and mucronately 

 dentate. 



No. 2. With a rotund lamina decurrent on the petiole ; wing 

 with a few deltoid mucroiiate teeth. 



Nos. 3-6. Irregularly runcinate ; terminal segment rotund, 

 obsoletely, mucronately dentate ; lateral segments of Nos. 3 and 4 

 deltoid, mucronate, decurved ; lateral segments of Nos. 5 and 6 

 broadly oblong, mucronate, obtuse, subdecurved. 



FIG. 487. Bhagadiolus stellatus. 

 Half nat. size. 



FIG. 488. Lactuca Icevigata. 

 Half nat. size. 



Lactuca laevigata, DC. (fig. 488). 



Primary root a short, stout, fleshy or tuberous taproot, colourless, 

 giving off numerous lateral branching fibres. 



Hypocotyl subterranean. 



Cotyledons spathulate, obtuse, entire, glabrous, 8 to 10 mm. 

 long. 



Leaves radical, alternate, glabrous, with petioles sheathing at 

 the base. 



No. 1. Oval, obtuse, entire, cuneate at the base, obscurely penni- 



