COMPOSITE 137 



Leaves simple, radical, alternate, fleshy, obscurely subpalmati- 

 nerved, white and cottony above when young, felted with a white 

 cottony tomentum beneath ; petioles semiterete, 

 channelled on the upper side, at first cottony, ulti- 

 mately nearly glabrous. 



No. 1. Small, spathulate, obtuse, entire, mu- 

 cronate. 



No. 2. Ovate, with a tooth on each side or in 

 stronger seedlings broadly ovate with two teeth on 

 each side, mucronate. 



No. 3. Similar to the last or in robust seedlings 

 broadly ovate or triangular, obtusely five-angled, 

 obscurely five-nerved. 



No. 4. Cordate, obtusely seven-angled and 

 sparingly and obscurely toothed between the angles. 



No. 5. Similar, but more decidedly toothed between the angles. 



Senecio cruentus, DC. 



Achene terete, or the outer ones slightly compressed, longitudin- 

 ally ribbed, and minutely transversely wrinkled or marked, glabrous, 

 but covered between the ridges with a double row of white papillae, 

 dark brown, crowned with the easily removable bristly or setaceous 

 pappus, slightly contracted at the top and forming a little cup on 

 which the pappus is seated. 



Seed closely conforming to the achene ; testa thin, brownish ; 

 hilum and micropyle contiguous, basal ; chalaza apical. 



Endosperm absent. 



Embryo straight, conforming to the shape of the seed, and occu- 

 pying the whole of the interior, pale yellow or nearly colourless ; 

 cotyledons oblong, obtuse or rounded at the apex, entire, tapering 

 into the radicle at the base and not auricled ; radicle short, about 

 half the length of the cotyledons, turbinate at the tip, obtuse, some- 

 times slightly contracted at the base of the cotyledons, close to the 

 micropyle. 



Seedling. 



Hypocotyl very short. 



Cotyledons oblong-ovate or subrotund-ovate, obtuse, subemargi- 

 nate, mucronulate, fleshy, pale green above, tinted with violet be- 

 neath, glabrous ; lamina 7 mm. long, 6 mm. wide ; petiole flattened, 

 glabrous, 5 mm. long. 



Stem herbaceous, elongated when about to flower. 



Leaves simple, radical and cauline, dull green and thinly hairy 



