508 ON SEEDLINGS 



Ultimate leaves rotund, subpalmate, deeply cordate at the base, 

 five- to seven- to nine-nerved, shallowly lobed, and shallowly crenate 

 with mucronulate crenatures, reticulate, pale green, thinly hairy, 

 paler beneath and thinly hairy with prominent nerves ; petioles 

 terete, with a slender channel on the upper side, thinly hairy, dilated 

 and clasping at the base ; stipules adnate to the petiole, and connate 

 by their edges near the top with two small, free, brownish points. 



Heuchera Drummondi, Hort. 



Primary root as in last species. 



Hypocotyl short and indistinguishable from the primary root. 



Cotyledons minute, narrowly oblong, obtuse or subacute, 2 mm. 

 long, '5 mm. wide. 



Stem herbaceous, very short, with hairy internodes where deve- 

 loped in the seedling. 



Leaves simple, radical, alternate, stipulate, petiolate, radiately 

 nerved from the base, thinly glandular-hairy and glandular-pubescent 

 above, densely glandular-ciliate with unequal-sized hairs, glandular- 

 pubescent beneath, paler and more conspicuously reticulate than on 

 the upper surface ; petioles terete, glandular-pubescent, dilated and 

 sheathing at the base ; stipules ovate, small, toothed and glandular- 

 hairy, hyaline or reddish. 



No. 1. Rotund-spathulate, glandular-ciliate and -hairy, entire, 

 1*75 mm. long, 1-5 mm. wide. 



No. 2, sometimes to No. 6, gradually larger than the first, rotund, 

 spathulate, entire. 



Other stages are reniform, entire or minutely tricrenate with 

 mucronulate crenatures ; then reniform, obviously tricrenate, tri- 

 nerved ; then reniform, five-nerved, five-crenate, and unequally and 

 densely glandular-ciliate. 



Larger forms are cordate, obtuse, and crenate with mucronulate 

 crenatures. 



Ultimate leaves palmate, deeply cordate at the base, five- to seven- 

 to nine-nerved and -lobed, simply or becoming doubly toothed, with 

 obtuse, mucronate teeth, glandular-pubescent above, glandular-cili- 

 ate and paler beneath, coarsely hairy on the nerves and reticulate ; 

 stipules adnate to the petiole for more than half their length, with 

 ovate, free, glandular, fringed points. 



Philadelplms gracilis, Hort. (fig. 328). 



Hypocotyl erect, striated, glabrous, 4-8 mm. long, light green or 

 colourless. 



