Other Characters in Oenothera Lamarckiana. 487 



second leaf was inserted about in the middle of the 

 length of the capsule on the somewhat concave side of 

 it, facing the main stem; it was quite small (b), being 

 only 2 cm. long and 4 cm. broad. Bract and flower were 

 otherwise quite normal.^ 



The existence of two flowers (and their fruits) in the 

 axil of a single leaf is a very rare phenomenon. When 

 it occurs, the upper, much larger, flowei of the two is 

 to be regarded as the normal one, whilst the lower, 

 smaller one, which flowers much later must be supposed 

 to arise as an accessory bud (Fig. 111). Whether this 

 supernumerary flower is to be regarded 

 as a shoot arising in the axil of a leaf 

 which has remained undeveloped but 

 corresponds in its position to the above 

 described supernumerary leaf must re- 

 main for the present unsettled.^ 



I observed this case of serial axillary Fig. in. Ocno- 

 ui j_ 1 ^1 /-ii.TT-i tliera Lamar ck- 



Duds not only on the held at Hnversum iana. Two fruits 



(1887) but also in my cultures, viz., in j" i^%^f'''\ °^ ^ 



^ ^ . , -^ . ; ' leaf. The lower, 



O. Lamarckiana, in O. laevifolia and in outer one is the 

 one or two other new species and crosses. ^'^""ses . 

 In the latter they were particularly numerous in 1900. 

 The free tips of the sepals are sometimes broadened 

 and take on the form and color of a leaf. I observed 

 this in my cultures of 1889, 1894, and later. The sepals 

 themselves may, on the one side, assume the character 

 of a petal (1889). The petals themselves sometimes 

 have outgrowths projecting from their median axes 



* It is perhaps not superfluous to recall the fact that Ocuothcra 

 has no prophylls (Eichler, Bliithendiagrammc, II. 458) and that 

 normal prophylls are inserted not medianly, but laterally. 



^Russell, Recherches sur les bourgeons multiples, Annales des 

 Sc. nat., 7 Serie, T. VII. 



