RANUNCULACE^E 



83 



The cotyledons (fig. 121) are lanceolate, obtuse, narrowed at 

 the base into a short petiole, obscurely trinerved, glabrous, pale 

 greenish-yellow, but not yet properly coloured, or full-sized. Hypo- 

 cotyl rather long, slender, almost colourless or tinged with purple 

 at the apex, glabrous. 



Atragene alpina, L. (fig. 122). 



Hypocotyl terete, pale green, emerging 4 rnm. above the soil. 



Cotyledons slightly pubescent, dark green, petiolate ; lamina 

 ovate, obtuse, 8 mm. long, 6 mm. broad ; petiole flattened above, 

 6 mm. long. 



Stem undeveloped in seedling stage. 



Leaves of seedling simple, radical (ultimately cauline), appa- 

 rently alternate or the pairs very unequally developed, subdis- 

 tichous, exstipulate, pub- 

 escent, deep green, peti- 

 olate, petioles channelled 

 above, dilated and clasp- 

 ing at the base, pubes- 

 cent. 



No. 1. Small, trans- 

 versely oblong or oval. 



No. 2. Broader than 

 long. 



No. 3. Transversely 

 oval, obscurely tridentate. 



No. 4. Trilobed with 

 obtuse or emarginate 

 lobes. 



No. 5. Trifid ; middle 

 lobe broadly obovate, emarginate, lateral lobes bidentate. 



No. 6. Tripartite ; middle lobe rotund-cuneate, tridentate ; 

 lateral lobes transversely broadest, unequally dentate along the 

 apex. 



No. 7. Tripartite ; lobes broadly obovate, emarginate. 



No. 8. Subreniform, shortly trifid. 



PIG. 122. Atragene alpina, var. genuina. 

 Nat. size. The numbers indicate the order 

 of development of the leaves. 



Anemone rivularis, Buchan. (fig. 123). 



Primary root stout, tapering downwards, dark-coloured or brown 

 with lateral rootlets of same colour. 



Hypocotyl short, stout, white or suffused with red, 3-4 mm. long. 



G 2 



