COMPOSITE 127 



late, acute, serrulate above the middle ; terminal segment lanceolate- 

 elliptic, acute, serrate from the middle upwards ; lateral segments 

 alternate ; rachis and midrib of segments channelled. 



Tagetes glandulifera, Schrank. 



Primary root very similar to that of T. patula. 



Hypocotyl minutely scabrid, pale purple, 2'1 cm. long, 1 mm. 

 thick. 



Cotyledons very similar to those of T. patula, tapering into a 

 short petiole, connate at the base, 1*6 cm. long, 8'5 mm. wide. 



Stem angled and furrowed ; 1st internode 4 mm. long. 



Leaves very similar to those of the last species, pinnatisect with 

 mostly alternate segments, and with submarginal, clear, translucent 

 glands. 



First pair pinnatisect, tapering much to the base with very 

 unequal segments ; basal ones small, slender, spathulate, triden- 

 tate, with the teeth often tipped with a bristle ; upper segments 

 lanceolate, subserrate ; terminal segment lanceolate-elliptic, serrate 

 above the middle. 



Second pair similar, except that the terminal segment is very 

 much the largest and oblong, acute, serrate. 



Gaillardia pinnatifida, Torr. (fig. 468). 



Primary root tapering, rather stout, colourless, giving off a few 

 lateral rootlets, annual. 



Hypocotyl 2-8 mm. above ground, 1-1*5 mm. 

 thick, fleshy, red, frequently surrounded by the husk 

 of the achene. 



Cotyledons oblong- spathulate, sessile, rather 

 fleshy, obtuse, glabrous, variable in length according 

 to vigour of specimen, 6-13 mm. long, 4-5 -5 mm. 

 wide. 



Leaves simple, radical and cauline, alternate, 

 coarsely hairy on both surfaces ; petioles channelled 

 above, convex beneath or somewhat ridged, pubes- 

 cent. 



No. 1. Spathulate, obtuse, or sometimes narrowly FIG 468 



elliptic, entire. Gaillardia 



No. 2. Oblong, obtuse, entire. fijfSf'riS 



Ultimate radical leaves entire or sublyrate- 

 pinnatifid, spathulate, obtuse, tapering to the base, alternately penni- 

 nerved, with the nerves ascending and entering the lobes when 



