Sex-limited inheritance in Lychnis dioica L. 



279 



that in the families in which hundreds of narrow -leafed females were 

 expected, not one appeared, while the only narrow-leafed female which did 

 appear was Included in a familj' (No. 12210) in which no narrow-leafed 

 females were to be expected. This narrow-leafed female was remarkal)le 

 in several respects; it was the smallest adult Lychnis plant which I 

 have yet seen, attaining a height of no more than 16 cm as compared 

 with 33 — 114 cm among my other Lychnis cultures. Although the young 

 rosette was of the usual angnstifolia-type, it remained smaller than the 



Fig. 4. A narrow-leafed female "mutant" (at left) (Ped. No. 12210 (2)) compared with 

 one of its narrow-leafed male sibs (5). A -30 cm rule included for comparison. 



rosettes of its narrow -leafed sibs. The stem -leaves were broad, as in 

 other narrow -leafed plants, but not so strikingly acuminate. In this 

 regard they were intermediate between the stem-leaves of the angusti- 

 folia males and those of "typica" females. The calyx was smooth and 

 nearly cylindric, the ribs being much less prominent than is usual in 

 this species, and without a trace of red pigmentation. The flowers 

 were about TS cm in diameter, scarcely exceeding the calyx-tube, wliile 

 the females of Melandrium album Garcke, of which this plant was 

 a pure derivative, usually have the corolla i-ather strongly exserted 



