96 



ON SEEDLINGS 



Seedling. 



Hypocotyl erect, terete, glabrous, herbaceous, 

 5-5 mm. long, green, reddish at the base, 

 1-5 mm. thick, sometimes subterranean. 



Cotyledons broadly oblong, entire, sessile, 

 glabrous, 1'2 cm. long, 9 mm. wide, amplexi- 

 caul. 



Leaves simple, radical and cauline, opposite, 

 exstipulate, shortly petiolate, penninerved. 

 ~Ji. First pair oblanceolate, entire, glabrous, 4-1 

 cm. long, and about 6 mm. wide, with a strong 

 midrib sunk on the upper side and prominent 

 beneath. 



Radical leaves of adult plant spathulate, 

 acuminate, decurrent for some distance on the 

 edges of the broad, channelled, pale-coloured 

 petiole, penninerved with ascending and slightly 

 anastomosing nerves, glabrous, ciliate, deep green 

 above with the midrib sunk above and pro- 

 minent beneath. 



Cauline leaves variable, like the radical 

 ones, but the greater 

 A number pinnatipartite, 



with linear, acuminate, 

 segments, sessile ; ter- 

 minal lobe or segment 

 large, lanceolate, acu- 

 minate, entire or 

 slightly cut at the 

 base. Otherwise like 

 the radical leaves. 



Scabiosa rutaefolia, 

 Vahl (fig. 456). 



Hypocotyl subter- 

 ranean. 



Cotyledons oblong, 

 obtuse or emarginate, 

 one-nerved, tapering in- 

 to a short petiole, gla- 



Fio 455 -Scabiosa caucasica,x 3. A, commence- brOUS, 1'3 cm. long 



ment of germination. B, day after commence- including the petiole, 6 

 ment: B, thickened base of hypocotyl; C, coty- ., 



ledons mm ' wme> 



