96 



ON SEEDLINGS 



Embryo larger than in D. Staphysagria, while the cotyledons 

 have short petioles ; otherwise similar. 



Seedling (fig. 136). 



Primary root perennial, fleshy, with a few rootlets, which are 

 fleshy near its base and fibrous towards its apex. 



Hypocotyl merging with and scarcely distinguishable from the 

 root, stout, fleshy. 



Cotyledons oval, foliaceous, 

 often unequal in size, slightly 

 pubescent, petiolate ; petiole 

 subterete, flattened above, 

 about 1 cm. to T5 cm. long; 

 lamina ovate, subacute, 8 mm. 

 long, 6 mm. broad. 



Stem undeveloped in seed- 

 ling stage. 



Leaves simple, radical and 

 cauline, alternate, exstipulate, 

 coarsely hairy on both surfaces, 

 almost villous on the under sur- 

 face and the petioles ; petiole 

 dilated and sheathing at the 

 base, subterete, channelled 

 above. 



No. 1. Palmately trifid, 

 trinerved, lobes frequently un- 

 equal. 



No. 2. Similar but larger and foreshadowing further subdivision 

 on the posterior or basal side. 



No. 3. Palmately five-fid, five-nerved, with rounded, obtuse lobes. 

 No. 4. Palmately tripartite, five-nerved, with the lateral segments 

 bifid and showing evidence of further subdivision on the posterior 

 side, cordate at the base ; ultimate lobes and teeth mucronate. 



Ultimate leaves palmately five- to nine-lobed ; middle lobe 

 cuneate, trifid, and cut or incise-serrate ; lateral lobes generally 

 oblong, bi- to tri-fid, incise-serrate, or cut. 



The seedlings of D. hybridum resemble those of D. elatum. In 

 D. cardinale the petioles are connate at the base. 



Delphinium nudicanle, Torr. et Gray (fig. 137). 

 Primary root tapering downwards, with a few lateral rootlets and 

 abundantly covered with rusty-brown hairs. 



FIG. 136. Delphinium elatum, var. 

 Two-thirds nat. size. 



