114 ON SEEDLINGS 



First leaves simple, entire, cauline, opposite, decussate ; later 

 ones alternate, oblong or spathulate, tapering at the base to a broad - 

 ish petiole, hirsute, green, very indistinctly pinnatinerved ; some of 

 the later leaves appear sessile and slightly toothed. 



Belhania sessiliflora, Thunb. 



Hypocotyl erect, terete, glabrous, 2-9 mm. above the soil. 



Cotyledons linear, acute, sessile, subfilifonn or terete, glabrous, 

 green or stained with purplish-brown, l-2-l*5 cm. long. 



Stem herbaceous, annual, erect, terete, glandular-hairy ; 1st inter- 

 node 4-7 mm. long ; 2nd similar. 



Leaves simple, entire, cauline, opposite, decussate, exstipulate, 

 sessile and slightly connate at the base, glandular-hairy, with the 

 midrib slightly furrowed above and prominent beneath. 



First to seventh pairs linear, acute, gradually longer, and broader 

 than the cotyledons. 



Odontospermum spinosnm, Auct. 



Athene hairy ; pappus simple. 



Seed obovoid, about 2 mm. long ; testa smooth, thin, dark brown ; 

 hilum inconspicuous. 



Embryo straight, filling the entire cavity of the seed, greyish or 

 colourless ; cotyledons thick, fleshy, oblong, obtuse, sessile, entire ; 

 radicle inferior, terete, obtuse, very much shorter and rather narrower 

 than the cotyledons. 



Seedling. 



Hypocotyl erect, terete, short, about 7*5-10 mm. long, light 

 green or colourless, glabrous. 



Cotyledons almost orbicular, entire, obtuse, glabrous, shortly 

 petiolate, dark green ; venation indistinct. 



Stem with the first intemodes undeveloped, the leaves appearing 

 immediately above the cotyledons. 



Primary leaves simple, entire, narrow, obovate or obtusely ob- 

 lanceolate, tapering at the base but scarcely petiolate, exstipulate, 

 ciliate and covered all over with bristly hairs ; venation represented 

 by a prominent midrib. 



Rudbeckia serotina, 

 Hypocotijl short, hardly appearing above the surface of the soil. 

 Cotyledons subrotund, obtuse, minutely emarginate, fleshy, gla- 

 brous, green, with no apparent venation, very shortly petiolate. 

 Stem with primary intemodes undeveloped. 



