2O MUTANTS AND HYBRIDS OF THE OENOTHERAS. 



(II) A second type was represented by individual No. 2.27, in 

 which the leaves of the rosettes were finely pubescent on July i ; the 

 rosettes were widely spreading and the leaves finely pubescent in 

 specimens examined on that day. The laminae were lanceolate-oblong 

 acute at the apex and broadest above the middle, gradually narrowing 

 to the broad petiole and decurrent upon it to its base ; approximately 

 denticulate, crinkled between the secondary veins, more or less spotted 

 with reddish areas. (PI. XIII, fig. 2.) 



Stems were sent up, which, upon examination on July 13, showed 

 leaves of a dark bluish-green tinge, the laminae becoming convex 

 upwardly owing to the unequal growth of the midrib. The stems 

 were dotted with the reddish bases of the hairs. The apices of the 

 main stem and of its branches formed close and symmetrical rosettes, 

 in approximation of the structures shown by lamarckiana. 



The general habit of the shoot was much like that of biennis, the 

 basal branches being long. The central stem, however, was irregu- 

 larly compressed and was of a zigzag form. 



The flowers exhibited the following characters : Corolla-segments 

 2.2 cm. long, 2.5 to 3 cm. broad ; calyx-segments 2.7 cm. long, more 

 than half the length of the hypanthium; hypanthium 3.5 cm. long, 

 slightly pubescent with scattered spreading hairs ; ovary 6 mm. long, 

 also pubescent with scattered spreading hairs ; anthers and stigma as 

 long as corolla, included, stigma variously 4 to 6 lobed. Bracts nearly 

 as long as the hypanthium. 



Capsules about 13 mm. long, with greatest diameter 6 to 7 mm., 

 the greatest length being about twice the thickness ; ovoid-oblong, 

 tapering in upper portion to obtuse apex ; not angled ; slightly 

 channeled; sparingly pubescent with appressed hairs. (PI. XV, fig. 2.) 



(III) The third type of the hybrid was represented by individual 

 No. 2.24, in which the rosette was easily recognizable in the early 

 stages and was dense, with the leaves lying flat on the ground when 

 examined on July i. The leaves were finely pubescent, with broadly 

 ovate laminae, the laminae more or less crinkled, acutish or obtuse at 

 the apex, broadest in the middle, more or less abruptly narrowed into 

 the broadly margined petiole, which is narrowly winged at the base. 

 These organs were approximately denticulate toward the apex, and 

 irregularly dentate at the base, with reddish petioles and the laminae 

 sparingly spotted with red. (PI. XIV, fig. i.) 



The basal branches were nearly as long as the main axis. A por- 

 tion of the stem immediately above the base was devoid of branches. 

 The upper part of the stem bore numerous erect branches. The stems 

 were deeply channeled and of a reddish color in the lower portions, 



