144 ON SEEDLINGS 



Ultimate leaves linear-oblong, pinnatifid ; lobes shortly oblong, 

 toothed in an irregular or jagged manner ; apex and long sub- 

 channelled base irregularly toothed, not lobed. 



Senecio polycephalus, Ledeb. 



Hypocotyl subterranean or none. 



Cotyledons as in S. speciosus but with a distinct petiole, about 

 1-3 cm. long including the petiole ; lamina 5 mm. wide. 



Leaves radical in young specimen, covered on both surfaces of 

 the petiole and lamina with coarse, jointed, subglandular hairs ; 

 petiole subamplexicaul at the base. 



No. 1. Ovate-oblong, obtuse, obsoletely dentate-serrate ; petiole 

 channelled above, convex below, about 1 cm. long. 



No. 2. Oblong, obtuse, cuneate at the base, distantly dentate- 

 serrate, with broadly triangular acute or mucronate serratures, suf- 

 fused with purple on the under surface. 



No. 3. Oblong, apex mucronate, otherwise similar to No. 2. 



Gamolepis Tagetes, DC. 



Primary root short, tapering, flexuose, throwing out strong 

 branches at an early stage, which soon supersede it. 



Hypocotyl suberect, terete, glabrous, deep purple, 1 P 8 cm. long, 

 1-25-1-5 mm. thick. 



Cotyledons oval, obtuse, shortly petiolate, glabrous, deep purple ; 

 lamina 7 mm. long, 5*5 mm. wide ; petiole 2*5 mm. long. 



Stem herbaceous, annual, erect, glabrous, with angles decurrent 

 from the base of the petioles ; 1st internode 2 mm. long ; 2nd 1 mm. ; 

 3rd 3 mm. ; 4th 3 mm. ; 5th 6-5 mm. ; 6th 1-6 cm. ; 7th 2'2 cm. 



Leaves simple, pinnatisect (after the first one), cauline, glabrous ; 

 petioles fleshy, channelled above, dilated at the base and amplexi- 

 caul. 



No. 1. Tripartite, subcuneate, with flat, linear segments. 



No. 2. Pinnatisect ; segments in three nearly opposite pairs with 

 a terminal one, flat, linear, subacute. 



No. 3. Segments seven, fleshy. 



No. 4. Segments nine, alternate, fleshy, frequently with a tooth 

 on the posterior side. 



Nos. 5 and 6. Segments linear, slightly dilated upwards, fleshy, 

 slightly channelled on the upper side, frequently folded up face to face. 



Gamolepis annua, Less. 



Hypocotyl erect, terete, slightly hoary, 1-5-2 mm. long, reddish- 

 green, minutely pubescent. 



