476 University of California Publications in Botany [Vol.5 



tifolia as to be practically indistinguishable from it. This line may 

 be regarded, therefore, as a stable derivative very closely approxi- 

 mating angustifolia in all its characters. 



h. Latifolli derivatives 



Type 2 (cf. pi. 64) approached in F, fairly near to some of the 

 variations of F^ (cf. pi. 62). It might be regarded as a stenophylla 

 derivative possessing an unusuallj^ luxuriant development of the wing 

 of the petiole, but it seems more reasonable to classify it as a latifolia 

 derivative exhibiting marked narrowing at the base of the lamina, such 

 as is shown in laKceolata derivatives. The flower was designated as 

 light pink in the notes taken at the time of flowering. The leaves of 

 F3 showed segregation through a considerable range, 6 being close to 

 the LATIFOLIA type of Fj, 6 to the latifolia type of its F^ parent 

 (type 2), 8 were sessilifolia leaves approaching in type those of mac- 

 rophylla, and 4 were auriculata leaves of type 10. In 13 the flowers 

 were noted as light pink, in 11 as pink, and in 1 as red. No subsequent 

 generations of this population were grown. 



Type 3, in F,, had (cf. pi. 65) a distinctly ovate lanceolate leaf 

 with a short fairly broadly margined petiole. The flowers were light 

 pink. F3, I2F3H2P3P14, amounted to 14 germinations, all of which 

 developed, although slovdy, into healthy, normal appearing plants. 

 The flowers were all the light pink color of the F^ parent, agreeing 

 with those of angustifolia, but varying somcAvhat in shape and size. 

 The leaves were of various shapes, 4 were distinctly petiolate, while 

 10 were sessile. Of the 4 petiolate plants the petiole of 1 was naked 

 and of 3 more or less winged. Of the 10 sessilifolia plants, 9 were 

 very similar to type 11, but 1 was rather longer and narrower, although 

 otherwise approaching the same general shape. No further generations 

 from this line were grown. 



Type 5 in F, (cf. pi. 67) resembled F^ most nearly, but the winged 

 petiole was short and the corolla tube slightly stouter. The flower 

 color was pink. Of 12F3pl4P^iPi4, 24 plants were grown. Of these 

 23 had leaves almost exactly like those of the Fg parent, but 1 had 

 leaves more nearly like auriculata of type 8 (cf. pi. 70). Of the 24 

 plants, 16 had flowers of various shades of pink while 8 had red flowers. 

 This line was not groAvn in subsequent generations. 



Type 6 was represented in F2 by a plant which resembled F^ in 

 having a M'inged petiole to the leaf and a pink flower. It is well repre- 



