170 ON SEEDLINGS 



Ultimate leaves linear, pinnatisect ; terminal lobe deeply trifid 

 with generally entire segments ; lateral lobes half-ovate, obtuse, again 

 pinnatifid, but lobes usually all on the anterior side, or with one 

 tooth only on the posterior side ; segments all tipped with a bristle. 



JEthionema gracile, DC. 



Hypocotyl 2-6 mm. long. 



Cotyledons suborbicular, more or less unequal at the base, entire 

 or sometimes emarginate, fleshy, with a few short, simple or slightly 

 branched hairs on the upper surface, shortly petiolate ; lamina 

 4-5-5 mm. long, the difference between the unequal sides varying 

 from -25--7S mm. ; petiole flattened above, 2-5-3 mm. long. 



Stem with more or less developed internodes, terete, covered 

 with stellate hairs. 



Leaves simple, entire, showing a midrib only, covered more or 

 less densely on both surfaces with white, stellate hairs. 



1st to 5th pairs in the seedling state small, cauline, opposite 

 and decussate, elliptic, subacute or obtuse. 



Bivonaea Saviana, Caruel. 



Hypocotyl terete, 4-5 mm. long, soon losing its epidermis by 

 splitting. 



Cotyledons shortly oblong, obtuse, minutely emarginate, taper- 

 ing slightly at the base, petiolate, glabrous ; the succulent lamina 

 5'5-7'5 mm. long, 4-5 mm. wide ; petiole long, slender, spreading 

 horizontally and upcurved, semiterete, channelled on the upper side, 

 dilated at the base and slightly connate, l'6-2'2 cm. long. 



Stem with the internodes undeveloped. 



Leaves simple, radical, alternate, petiolate, glabrous, succulent, 

 venation indistinct, veins radiating from the base and becoming 

 incurved upwards, deep green above, paler beneath, with a more 

 conspicuous venation ; petiole very long, tapering upwards from a 

 dilated base, channelled on the upper side. 



Nos. 1-6. Eeniform-cordate, obtuse, entire. 



Nos. 7-10. Similar but having one or two angles or teeth near 

 the base on each side. 



Menonvillea trifida, Steud. 



Hypocotyl erect, terete, glabrous, 2-3 cm. long, light green or 

 colourless. 



Cotyledons long, linear, acute, curled at first, sessile, glabrous, 

 pale green. 



Stem with primary internodes undeveloped. 



