42 



OX SEEDLINGS 



No. 1. Cordate-reniform, acute, acutely and irregularly serrate, 

 five-nerved. 



No. 2. Cordate, acute, seven-nerved, irregularly and acutely 

 serrate. 



No. 3. Cordate, acuminate, seven-nerved, irregularly and acutely 

 serrate. 



Hedera Helix, L., var. palmata. 



Primary root tapering, flexuose, giving off numerous lateral, 

 flexuose fibres. 



Hypocotyl subflexuose, terete, glabrous, subverrucose, brownish, 

 2-2 cm. long, woody. 



Cotyledons oval, obtuse, petio- 

 late, subtrinerved and reticulate, 

 foliaceous, deep green above, paler 

 beneath, glabrous ; petiole flattened 

 above with a longitudinal median 

 ridge, 6 mm. long. 



Stem woody, terete, zigzag or 

 subflexuose, pubescent with stel- 

 lately branching hairs, pale green ; 

 1st internode 1 mm. long; 2nd 

 5 mm. ; 3rd 3 mm. ; 4th 9 mm. ; 

 5th 12 mm. 



Leaves simple, cauline, alter- 

 nate, exstipulate, petiolate (petiole 

 with sheathing base), evergreen, 

 pubescent with stellately branching 

 hairs when young and unfolding, 

 glabrescent when old except for a 

 few hairs on the nerves, deep green 

 above, reticulate, paler beneath. 



No. 1. Reduced to a petiole, or 

 limb, small. 



No. 2. Palmately tri-fid and 

 -nerved with a lateral tooth on each 

 side foreshadowing two other lobes ; 

 lobes and teeth obtuse, mucronate. 



No. 3. Very small, trifid. 



No. 4. Palmately five-nerved 

 and -lobed, subcuneate at the base ; 

 lower nerve on each side slender and supported by a large lateral 

 branch from the nerves above ; two lateral lobes small, triangular ; 

 three middle lobes triangular- elongate, subacute or mucronate. 



FIG. 418. Hedera Helix. Half nat. size. 



