Scrophulariaceae. 



407 



direction has been horizontal, and the distance between the 

 nodes is comparatiл^ely considerable. The apex of such a 

 runner is shown in Fig. 15, C. In Fig. 15, D, ///^ has not 

 borne flowers; the sister-shoot 1 11^ has been arrested in its 



Fig. 15. Bartschia alpina. 

 A, The lower portion of a flowering plant; both /Л and //- have borne 

 inflorescences (Holsteinsborg, 5. 7. 1884). В, A foliage-leaf. C, The 

 apex of a runner. D, Portion of a sympodium in which the runner- 

 like portion of shoot // is particularly long; /■ is an adventitious root. 

 (C and D, Aursundsöen, 31. 8. 1918.) (About V3.) 



development, the two small basal pairs of leaves are from 

 the previous year, and withered, but the bud is in a fresh 

 condition; like shoot // shoot / has had a long runner-like 

 portion. The innovation-shoots are always developed from 

 the portion of the shoot of the first year; in case the latter 



