Varietäten, Descendenz, Hybriden. 263 



frora either parent in their (l) total inability to climb and (2) com- 

 plete sterility. These "dwarfs" differ among themselves: some 

 produce only a few weakly shoots a few inches high at the end 

 of two years; others form a bush at most 5 ft. high and the strenger 

 shoots show a slight tendency to climb if trained; others again 

 produce many prostrate shoots which cover the ground for a 

 distance of three or four feet. Even after seven years these plants 

 made no attempt to flower. 



The foUowing four crosses have been made: 



(a) $ English var. "Fuggles" X cT English var. with a red bine. 



(b) $ "Fuggles" X English var. with a green bine. 



(c) 3 German var. "Stern" X </ English red and striped bine. 



(d) $ Engish "Canterbury White bine" X d' from Oregon U. S. A. 

 The proportions of "fertile climbers" to "sterile dwarfs" in Fj 



were (a) 52 : 35 (b) 66 : 1 (c) 120 : (d) 79 : 30. 



The dwarfs in the present case are absolutely sterile and so 

 differ from those mentioned by Figdor which developed flowers. 

 The dwarfness cannot be attributed to external factors. 



W. Neilson Jones. 



Shull, G. H„ A Feculiar Negative Correlation in Oeno- 

 theva Hybrid s. (Journ. of Genetics IV. 1. p. 83—102. June 1914.) 



Investigation of genetic phenomena in O. riibvicalyx Gates and 

 its Hybrids shows that the bright red hypanthia and cones of that 

 species are separable in inheritance from the brilliant red stems 

 with which Gates found it always associated. 



The cross between O. rubricalyx and O. rubrinervis or O. La- 

 marckiana (also between other species) show that strongl}'- pigmented 

 buds (characteristic of O. rubricalyx) are associated invariably with 

 a low degree of pigmentation in the stem and vice versa. 



In the case of crosses between 0. rubricalyx and O. rubrinervis 

 the ratio between ''rubricalyx^' buds and green buds in F^ is about 

 1:1; in crosses with O. Lamarckiana the ratio is 2:1. There also 

 appears to be an association between green buds and nanella stature. 



The Author discusses Gates' three conclusions regarding the 

 origin and genetic nature of the rubricalyx character and concludes 

 that they are erronious. W. Neilson Jones. 



Sutton, A. W., Results obtained by crossing a Wild Pea 

 from Palestine with Commercial Types. (Journ. of Linn, 

 Soc. Lond. XLII. p. 427—434. July 1914.) 



The wild pea, used in the crosses described in this paper, has 

 the following characteristics — Slender habit of growth, seif colou- 

 red magenta flowers borne singly or in pairs, serrated stipules and 

 leaflets, seeds with no black hilum, absence of colour in the axils, 

 wooliness in the interior of pod. This plant was crossed with forms 

 of the white flowered Pisum sativum and with the bicoloured P. 

 arvense. Only 4 out of the 40 matings could be carried to Fg either 

 from sterility or failure of seeds to germinate. Of these four, the 

 Author describes the subsequent behaviour of one in detail viz. 

 that in which a crown flowered (umbellate or Mummy) variety of 

 P. sativum was used having white flowers borne in terminal um- 

 bels, no colour in the leaf axils, no serration of leaflets and no 

 black hilum on the seeds. This cross gave one seed onl}' with no 



