18 ESTABLISHMENT OF VARIETIES IN COLEUS 



illustrating the types as classified, will enable the reader to visualize 

 the patterns referred to by name. 



Color pattern yellow-red blotched (fig. 1): Leaves almost entirely 

 amber yellow with only very limited and scattered areas of greenish 

 tissue. The island-like areas of green are surrounded by yellow. 

 Irregular-shaped blotches of nopal red are scattered over both upper 

 and lower surfaces. This decidedly yellow pattern was derived from 

 the several patterns, as shown in table 1, by a sudden and a conspicu- 

 ous loss of green tissue. 



Color pattern green-yelloiv-red blotched (fig. 2) : This is the pattern 

 possessed originally by the two parents and has already been described. 



Color pattern green-yellow spotted-red blotched (fig. 4) : In this pattern 

 there is no definite border of yellow. The yellow appears in rather 

 limited and somewhat scattered areas, sometimes nearly limited to the 

 border zone, but often quite generally distributed throughout the leaf. 

 The pattern is, therefore, decidedly greener in appearance than that 

 of the parental type. 



Color pattern green-red blotched (fig. 5) : This is a bicolored pattern 

 of green and red. As there is no underlying yellow the epidermal red 

 appears uniformly as violet carmine. This t^-^pe arose frequently on 

 plants with patterns containing yellow by what was apparently a com- 

 plete loss of yellow. 



It may be noted that in the four patterns as arranged above there 

 is an increase of green and a corresponding decrease of yellow, with 

 the distribution of the epidermal red quite uniform. The yellow-red 

 blotched pattern gives the extreme development of j^llow with almost 

 complete absence of green. The green-red blotched pattern has appar- 

 ently a complete loss of yellow. The green-yellow-red blotched and the 

 green-yellow spotted-red blotched patterns are gradations between these 

 extremes. 



Color pattern yellow-green-red blotched (fig. 6) : This is a pattern 

 of green, yellow, and red as in type green-yellow-red blotched, but the 

 relative positions of the green and the j^ellow are reversed. The 

 3^ellow is in the central portion of the leaf. 



Color pattern green-yelloir-solid red (fig. 8) : Both surfaces of the 

 leaf are a solid red. Through the center of the leaf the color is 

 violet carmine, but the marginal zone underlaid by j^ellow is nopal red. 

 At the base of the leaves a greenish tint prevails and at the extreme 

 edge of the margin a fine line of yellow is visible. On the under sur- 

 face the red seems slightly less intense and does not cover the larger 

 veins, which stand out prominently^ on this surface. This pattern 

 differs from green-yellow-red blotched in having the entire epidermis 

 solid red instead of blotched. Frequently, however, a few isolated 

 areas are free of epidermal red and the underlying green or yellow 

 shows clearly. 



