1G() 



3 and 4 are of Aiiciiionc uiultifida, fiy^ures 5 and 6 are of Pulsa- 

 tilla Jiirsutissima and figures 7 and 8 are of OxygrapJiis Cyinlm- 

 laria. As above noted, the cotyledon-stalks in the last-named 

 species are connate for nearly their entire length. This species 

 should, therefore, be added to the list * published by Miss Sar- 



FlGS. 1-8. Sketches illustrating cotyledon- and leaf-structiue in Aquiltgia, Anem- 

 one, Piilsalilla, and Oxygmpliis. 



gant, of plants in which the cotyledon-stalks form a petiolar tube. 

 On the whole, it may be said that while there are slight differ- 

 ences in the epidermis of cotyledons and leaves and in their 

 internal structure, yet the greatest differences are in the leaf- 

 petioles and cotyledon-stalks. The differences, recorded here 

 for these species of Ranimculaceae, are on the whole, much the 

 same as those i)rcviously noted in other plants by Ramaley.t 



UNiVKRsnv OK Colorado, 

 JJoUl.UKR, Coi/). 



* Annals of I'olany 17 : 73. I903. 



f Minn. 15ot. Studies 2: 417. 1900 ; also, I'nivcisily of Colorado Studies 2: 

 255. 1905. 



