192 ON SEEDLINGS 



Helianthemum vulgare, Gaertn. 



Primary root long, tapering, with fleshy, stout, lateral rootlets, 

 generally stouter than the primary one. 



Hypocotyl erect, terete, hairy, reddish, sometimes decumbent 

 (perhaps accidental) at the base. 



Cotyledons broadly oval or subobovate-oval, rounded and obtuse 

 at both ends, opaque green, one-nerved ; lamina 4-5-5*5 mm. long, 

 3-4-5 mm. broad; petiole subterete, slightly channelled above, hairy, 

 reddish, about 2 mm. long. 



Stem shrubby, erect, ultimately decumbent, wiry, hairy or gla- 

 brous, but reddish and hairy in seedling stage ; 1st internode 8 mm. 

 long. 



Leaves shortly petiolate, subperfoliate at the base, more or less 

 hairy on both surfaces and margin when young with bulbous-rooted 

 hairs, ultimately glabrous or hairy in different varieties ; petioles 

 subterete, narrowly channelled above, glabrous, or hairy at least 

 when young ; stipules lanceolate, obtuse, slightly hairy, ultimately 

 linear-lanceolate, acute, deep green, shining, hairy or glabrous, 

 according to the leaves. 



1st pair lanceolate, obtuse, channelled along the middle of the 

 upper surface, with a prominent midrib. 



Ultimate leaves oblong, obtuse or obtusely subcuspidate, more 

 or less revolute at the margin, with a strong midrib, sunk on the 

 upper surface and prominent beneath, deep green, and shining 

 above when devoid of hairs, paler beneath ; but when hairy they 

 are greyish above, and more or less hoary or white beneath. 



Helianthemuni rosmarinifolium, Pursh. 



Cotyledons large, oval-oblong, obtuse, deep green above, red 

 beneath, glabrous except the petiole ; lamina with a faint midrib, 

 6-7 mm. long, 3-5-4-5 mm. wide ; petiole hairy, slightly channelled 

 above, 2-3 mm. long, shortly connate at the base. 



Stem ultimately shrubby ; 1st internode gradually developing to 

 a length of 1, 2, or 3 mm. 



Leaves linear, with stellate hairs, at least in the young state, 

 deeply channelled above, carinate beneath and revolute at the 

 margins. 



