412 



ON SEEDLINGS 



taper into a petiole which is slightly connate at the base. 

 They therefore correspond to the cotyledons in being broad, 

 just as both sets of organs are relatively narrow in the above- 

 mentioned species. 



Illecebrum verticiUatum, L. (fig. 603). 



Primary root slender, fibrous, 

 annual. 



Hypocotyl erect, ultimately pro- 

 cumbent, tapering downwards, gla- 

 brous, pale green or stained red, 

 3-5 mm. long. 



Cotyledons linear-oblong, obtuse, 

 entire, sessile, tapering to the base 

 and slightly connate, glabrous, light 

 green, 2-25-2-75 mm. long. 



Stem erect, soon becoming pro- 

 strate, annual, slender, terete, leafy, 

 glabrous, pale green ; 1st internode 

 2-5-3 mm. long ; 2nd 2-5-3*5 mm. 

 Leaves simple, entire, cauline, 

 opposite and verticillate, stipulate, 

 sessile, glabrous, narrowed to the 

 base, with an indistinct midrib, 

 slightly connate ; stipules small, 

 scarious, more or less united and 

 sheathing the stem, in the axils of 

 the leaves, but interpetiolar in their 

 insertion. 



First, second and third pairs 

 linear-spathulate, obtuse, tapering 

 much to the base. 



Paronychia dichotoma, Nutt. 

 (fig. 604). 



Primary root very slender, long, 

 tapering, with fibrous lateral root- 

 lets. 



Hypocotyl erect, terete, gla- 

 brous, but scabrous or covered with 

 numerous minute crystalline ex- 

 crescences, short and tapering indistinguishably into the radicle. 

 Cotyledons broadly ovate or rotund-ovate, obtuse, entire, gla- 



