ON SEEDLINGS 



FIG. 129. 



Ranunculus repens, x 2. 

 Abnormal specimen. 



Cotyledons rotund-ovate, obtuse, entire, deep green, opaque, 

 glabrous, obscurely three- to five-nerved from the base ; lamina 

 5-6 mm. long, 4 - 5-5 mm. broad ; petiole 

 semiterete, slightly channelled above, 

 slightly dilated at the base, 6-7 mm. 

 long. 



In the accompanying sketch is a 

 seedling with the petioles and basal 

 part of lamina united along one edge 

 so as to appear like one large bifid 

 cotyledon. 



Stem. Several of the first inter- 

 nodes undeveloped. 



Ceratocephalus falcatus, Pers. (fig. 130). 



Primary root suddenly breaking up into a number of equally 

 strong rootlets. 



Hypocotyl fleshy, terete, tapering into the root, reddish beneath 

 the cotyledons. 



Cotyledons linear, obtuse, with revolute margin, fleshy, deep 

 green above, paler beneath, 1 cm. long, 2 mm. broad. 



Stem annual, very short ; 

 internodes undeveloped. 



Leaves simple, radical in a 

 rosette, alternate, exstipulate, 

 rather succulent, bright green 

 above, paler beneath, woolly 

 when young, glabrescent, petio- 

 late ; petioles flattened on both 

 surfaces, dilated at the base. 



Nos. 1 and 2. Linear, en- 

 tire, similar to the cotyledons. 

 No. 3. Spathulate ; apex 

 tridentate. 



No. 4. Spathulate, trifid. 

 Nos. 5 and 6. Cuneate, un- 

 equally trilobed. 



Nos. 7 and 8. Cuneate, tri- 

 partite ; segments linear, lateral ones bifid at apex. 

 No. 9. Tripartite, with linear segments. 

 No. 10. Tripartite ; lateral segments unequally lobed. 

 No. 11. Doubly bipartite. 

 No. 12. Tripartite ; lateral segments bifid. 



PIG. 130. 

 Ceratocephalus falcatus. Nat. size. 



