COMPOSITE 143 



Stem subshrubby, erect, terete, slightly flexuose near the base, 

 dull purple and densely covered with spreading jointed white hairs ; 

 Istinternode 7 mm. long ; 2nd7'5 mm. ; 3rd 7mm. ; 4th 7'5mm. ; 

 5th 9-5 mm. ; 6th 13-5 mm. ; 7th 1O5 mm. ; 8th 8 mm. ; 9th 

 5 mm. 



Leaves cauline, sessile, densely covered on both surfaces with 

 spreading or patent, jointed, white hairs, ascending, patent, or older 

 ones recurved, revolute at the margin from the fourth onward. 



No. 1. Spathulate, entire, or obsoletely denticulate, 1'75 cm. 

 long, 9 mm. wide above the middle, tapering to a narrow base. 



No. 2. Spathulate, tapering to a narrow base, obsoletely and 

 mucronately dentate. 



No. 3. Spathulate, subserrate above the middle, tapering to a 

 rather broad base. 



No. 4. Broadly spathulate or subobovate, more decidedly serrate 

 above the middle. 



No. 5. Broadly spathulate, serrate above the middle, tapering to 

 a broad base. 



No. 6. Spathulate, with a broad base, serrate nearly throughout, 

 apex subacute. 



No. 7. Spathulate, acute, serrated to the base and subauricled ; 

 serratures largest above the middle of the leaf. 



Nos. 8-12. Spathulate, acute, serrate throughout, auricled at the 

 base and amplexicaul. 



Senecio speciosus, Willd. 



Primary root slender, tapering, much branched, with long s 

 slender, very numerous rootlets, at length overpowered by strong 

 adventitious roots arising immediately below the leaves. 



Cotyledons spathulate, obtuse, glabrous, rather succulent, pale 

 green, 1 cm. long, tapering gradually into the connate petiole ; 

 petioles ascending, 7 mm. long. 



Leaves radical, coarsely hairy on both sides and villous on the 

 midrib beneath ; pale green above and paler beneath. 



No. 1. Rotund, entire, obscurely trinerved, and suddenly tapering 

 into a broad channelled petiole ; petiole subvillous, dilated and 

 sheathing at the base. 



No. 2. Broadly elliptic and rounded at the apex, distantly and 

 obsoletely dentate at the sides, otherwise like the first. 



No. 3. Obovate, obtuse, distantly serrate-dentate, obscurely 

 penninerved. 



Nos. 4 and 5. More decidedly serrate ; serratures obtuse, sub- 

 mucronate. 



