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the parent, and "apparently not destined to be successful"; 

 (4) certain forms that are " organically incomplete"; (5) " in- 

 constant forms." 



Group (i), retrograde varieties. Of this class the following 

 three forms were discovered, all produced in nature as well as 

 in the garden : 



O. l&vifolia, the smooth-leaved variety, constant from seed and 

 never reverting except from crossing. As strong and fertile as 

 the parent. 



O. brevistylis, the short-styled form. In this the ovary is so 

 placed that it is reached by very few pollen tubes. Thus while 

 the plant is vigorous it is but indifferently productive of seeds, 

 and as De Vries says " many [capsules] contained no seeds at 

 all ; from others I have succeeded in saving only a hundred seeds 

 from thousands of capsules." These seeds, however, reproduce 

 the variety without reversions to Lamarckiana. 



O. nanella, the dwarf, "a most attractive little plant, 

 very short of stature, reaching often a height of only 20-30 cm., 

 or less than one fourth of that of the parent." The flowers 

 are as large as those of the parent ; the leaves are much 

 smaller and with no reversion in seedlings, even in repeated 

 and successive generations. 



Group (2), progressive elementary species, and vigorous ; two 

 forms discovered : 



O. gigas, the giant, deserving its name not from being higher 

 than its parent, but because it is " so much stouter in all 

 respects." The stems are often twice as thick as in the parent 

 (Lamarckiana), and the " internodes are shorter and the leaves 

 more numerous, covering the stems with a denser foliage." The 

 flowers are larger, and the seed capsules are smaller and filled 

 with fewer but larger seeds than in the parent plant. It has a 

 strong tendency to remain a biennial. 



O. rubrinervis, the red-veined form. In this the veins of the 

 leaves are distinctly tinged with red and the fruits are streaked 

 with red. The plants are in many ways a counterpart of the 

 giant, except for the red tinge and distinctly lighter foliage. 

 This latter probably accounts for the marked tendency on the 

 part of this form to become an annual. Like the giant, this form 



