172 MAINE AGRICULTURAL EXPERIMENT STATION. I902. 



which in such specimens the ovary is placed, and the second 

 refers to the length of the ovary proper, as indicated usually 

 by a slight swelling. 



In the column "Color of petal" the size of the green centre 

 stripe is frequently given and also its position (proximally or 

 distally) when it is not approximately in the centre of the petal. 

 When the green stripe is rather narrow it usually does not 

 extend to either the base or the tip of the petal. 



ABBREVIATIONS. 



b. border, referring to a space from two to four millimeters 

 wide along the margin of the petal, c. centre, dis. distally, 

 referring to the distal part of the petal, ed. edge, referring to 

 a space not more than one millimeter wide along the margin 

 of the petal, gr. green. It. light, m. margin, referring to a 

 space from four to six millimeters wide along the margin of 

 the petal, pr. proximally, referring to the proximal or basal 

 part of the petal, wh. white. 



NOTES. 



1-14. Typical plants, showing ordinary slight variations of 

 the different parts. 



15-17. Plants with petioled leaves, all the other parts being 

 typical. 



18-129. Abnormal plants, showing variation in petal colora- 

 tion and in structure of parts. 



22. Length of petioles 76, 81 and 86 mm. 



24. The green centre stripes on the petals are 10, 14 and 18 

 mm. wide. 



25. The green centre stripes on the petals are 12, 14 and 22 

 mm. wide. 



26. The third petal is smaller than the others, the stem being 

 14 mm. long and the blade 18x30 mm. in size; two stamens are 

 aborted, the others having filaments 14, 10, 8 and 4 mm. long 

 and anthers 9, 9, 5 and o mm. long. 



2j. Two stamens are aborted. 



28. Two leaves are reduced to spurs 2 mm. long. 



29. All the leaves are aborted. 



30. One petal is entirely white, one has a trace of green along 

 its centre distally and the other has a green stripe 3 mm. wide 

 alonsf the centre. 



