FURTHER NOTES ON EPILOBIUM HYBRIDS 83 



except for slight differences in the shade of the petals, some 

 being lighter, some darker rose, the darker coloured flowers 

 being borne on plants of slightly darker foliage ; a similar 

 variation being also met with in E. montanum. 



The rosette leaves are oblong-ovate, obtuse, some being 

 relatively shorter and approaching those of E. montanum : the 

 ones formed in the autumn are glabrous and shining, the 

 spring leaves being hairy. The plants grow to about 90 cm. 

 high ; they are copiously branched and flower profusely. The 

 stem is terete ; where it is slightly decumbent adventitious 

 roots are produced. The leaves are ovate-lanceolate, mostly 

 opposite and connate, rounded at the base, but not at all cordate 

 and not so broad as in typical E. montanum ; the large leaves 

 towards the base of the stem are 8-9 cm. long x 3^-4 cm. 

 broad, broadest at one-third of their length from the base ; 

 the upper leaves are of a similar shape but smaller. The 

 leaves are toothed, not so deeply as in E. montanum, but 

 much more than in E. parviflorum. The general aspect of 

 the plant is a dull light green, owing to the dense short down 

 with which it is clothed. At the base this consists of simple 

 hairs, larger than those of E. montanum, shorter than those of 

 E. parviflorum ; in the inflorescence there are many glandular 

 hairs mixed with the simple ones, and the latter are set obliquely 

 or appressed. Leaves and stem are alike in this character, which 

 is, on the whole, similar to E. parviflorum. The flower-bud is 

 3| mm. long x 2 mm. in diameter, oval, scarcely apiculate, with 

 glandular and simple hairs, in general appearance most like that 

 of E. parviflorum; the pedicel is 5 mm. long ; the ovary 2|-3 cm. 

 long, square, furrowed, with much oblique simple and glandular 

 down. The calyx is divided to two-thirds of its length, the 

 segments slightly incurved (cf. E. parviflorum). The petals are 

 elliptical (as in E. parviflorum), of the same length as in E. 

 montanum but broader, notched. The anthers produce good 

 pollen. There are four stigmas which spread out, but do not 

 roll back. The capsule is 6-7 cm. long on a pedicel of 2 cm., and 

 contains a few good seeds, but most of the ovules are abortive. 



Haussknecht (I. c. p. 79) gives a description of this hybrid, 

 which he himself produced experimentally, both reciprocal crosses 

 being made and the offspring being found identical : " wenigstens 

 fiihle ich mich nicht in Stande, die unbedeutenden Nuancen 

 durch Worte auszudriicken " (I. c. p. 27). The description he 

 gives accords well with my own plants. The ~F ± may therefore be 

 considered a well-known hybrid. It is probably also a frequently 

 occurring plant, for Haussknecht gives many records, and since 

 the Eev. E. S. Marshall turned his attention to Epilobia in 

 Britain :|: several specimens have been recorded as this hybrid. 



Since the J? x appears to be fertile to some extent, it is to be 

 expected that F 2 will show a large number of varieties ; the 

 analysis of this generation promises to be an interesting piece 



* Journ. Bot. 1889, p. 143 ; 1890, p. 2, &c. 



