134 ON SEEDLINGS 



Nos. 1 and 2. Small, spathulate-cuneate, and five-toothed. 



Nos. 8 and 4. Pinnatifid, short, subcuneate at the base, with 

 entire segments. 



No. 5. Short, broad, irregularly bipinnatifid. 



No. 6. Bipinnatisect, the lower segments scattered. 



No. 7. Shortly oblong, obtuse, bipinnatisect ; lowest segment 

 small. 



No. 8. Ditto, tripinnatisect ; middle segment largest and most 



cut. 



No. 9. Oblong, obtuse, tripinnatisect with most of the primary 

 divisions nearly equal ; base of petiole with a few linear segments. 



Nos. 10 and 11. Oblong, obtuse, tri- to quadri-pinnatisect, with 

 a small detached segment about the middle of the petiole, and a few 

 linear, mostly entire ones towards or close to the base ; ultimate 

 segments linear, acute rather thin but fleshy. 



Cauline leaves sessile ; larger ones bi- to tri-pinnatisect to the very 

 base with mostly alternate segments the middle ones largest with 

 long, linear, slender, subfiliform acute segments. 



Cotula coronopifolia, L. 



Hypocotyl slender, 8-10 mm. long. 



Cotyledons oblong or linear-oblong, obtuse, or slightly spathulate, 

 entire, connate into a cylindrical sheath at the base for about one- 

 third of their length, and surrounding the plumule, glabrous, sessile, 

 a midrib faintly visible, 3-4*5 mm. long in the upper free part, and 

 1-5-2 mm. wide. 



Stem terete, glabrous; 1st internode -9-1-5 cm. long; 2nd 

 shorter and often entirely covered with the leaf-sheaths. 



Leaves simple, cauline, alternate (first pair opposite), sheathing 

 at the base, glabrous, at least in the seedling. 



Nos. 1 and 2. Opposite, linear, entire, obtuse, elongated, taper- 

 ing to the base, indistinctly petiolate, but sheathing the stem with 

 a cylinder from 3-4-5 mm. long, showing a midrib only, minutely 

 punctate. 



No. 3. Similar, and sheathing in the same way, entire or with a 

 narrow linear, lateral segment, about or below the middle. 



No. 4. Similar to the last or having a segment on each side, the 



Cenia subheterocarpa, Less. 



Leaves simple, uni- to bi-pinnatifid, cauline, lower opposite, 

 upper alternate, sessile, hairy on both surfaces. 

 First pair opposite, linear, slender, entire. 



