[Vol. X 

 386 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Anne's. In addition to those in the town, which are in great 

 profusion, numerous smaller colonies are scattered along the 

 adjacent sand dunes. The great majority of the plants is the 

 same as at Bidston Junction except in the crinkling of the leaves, 

 having foliage closely resembhng that of de Vries's (E. Lamarck- 

 iana, midribs red both above and below, the red absent in 

 some individuals. The flower measurements were, length of 

 petals 50 mm., hypanthium 45 mm., ovary 10 mm. Several 

 aberrant individuals were also observed. One dwarf mutant 

 was found growing in the shade of a large plant. It resembled 

 (E. mut. nanella but had red midribs. One large rosette, having 

 leaves very obtuse and pale pink midribs, probably belonged to 

 (E. mut. hrevistylis. A number of plants represented a shorter 

 spindling type with very narrow rosette-leaves (18 mm. wide 

 X 14 cm. long). Another plant belonged to a new type, large 

 and branching with thicker, narrower leaves (33 mm. x 13 cm.), 

 stiff er and narrowly pointed, midribs white, and later in beginning 

 to flower (buds only half developed, July 16). 



In addition to these probable mutants, there were found in 

 one field a few plants of a small-flowered (E. biennis race grow- 

 ing with the (E. Lamarckiana. They differed from the latter 

 only in the small flowers (petals 22 mm., style short), and hence 

 were unlike the OE. biennis race previously described. Near by 

 were also found plants, evidently hybrids of these two races, 

 with petals about 30 mm. in length. 



CULTTIEES 



Some of my cultures of Oenotheras from near Birkenhead have 

 already been described in a general way (Gates, '13). Here I 

 wish to describe a few of these forms in detail, and also to refer 

 to my experiments with plants from St. Anne's. I have not 

 seen the colony from which the Birkenhead seeds were obtained, 

 but it evidently contains a great profusion of forms belonging 

 to both (E. Lamarckiana and (E. grandiflora, while all the 

 colonies I have observed have a much more uniform population. 



CE. MTJLTIFLORA 



One of the distinct races in these cultures I have akeady 

 (Gates, '10) referred to as (E. multiflora. It is descended 



