74 THE BOTANICAL MAGAZINE. IT^i. xxix. No. 342. 



^Inflorescentia elongato-paniculata. ... Sect. 3. Spiraria, Ser. 

 2{ Inflorescentia corymboso-paniculata. 



I Sect. 2. Calospira, C. Koch. 



rFlores in gemma sessile glomerati. 

 3J ... Sect. 1. Chamaedryon, Ser. Subsect. Glomerati, Nakai. 



Unflorescentia ad apicem rami hornotini terminates 4. 



Flores corymbosi v. umbellati, pedicellis indivisis. 



Sect. 1. Chamaedryon, Ser. Subsect. Euchamaedryon, Nakai. 

 Flores corymbosi, pedicellis exterioribus ramosis v. iterum 

 corymbosis. ... Sect. 1. Chamsedryon, Ser. Subsect. Meta- 

 { chamaedryon, Nakai. 



Sect. I. Chamaedryon, Ser. 



Subsect. 1. Glomerati, Nakai. 



(Sp. prunifolia). 

 Subsect. 2. Euchamaedryon, Nakai. 



(S. pubescens, S. trilobata, S. media, S. chamasdri folia). 

 Subsect 3. Metachamaedrycm, Nakai. 

 (S. trichocarpa). 

 Sect. II. Calospira, C. Koch. 



(S. microgyna, S. silvestris, S. koreana). 

 Sect. III. Spiraria, Ser. 



(S. salici folia). 



Sect. I. Chamaedryon, Seringe in DC. Prodr. II. p. 542. 

 Max. in Act. Hort. Petrop. VI. p. 176. Focke in Nat. Pflan- 

 zenf. III. 3. p. 14. Rehd. in Batel. Encycl. p. 1700. Schneid. 

 Illus. Handb. I. p. 449. 



Inflorescentia ad apicem rami hornotini tantum terminalis, 

 corymbosa, umbellata v. in gemma sessile glomerati. 

 Subsect. I. Glomerati, Nakai. 



Chamaedryon series 1. Maxim. I.e. p. 177. 



Inflorescentia in gemma sessile glomerati ie. gemma florifera 

 et foliifera diversa. 



So 3.) Spiraea prunifolia, S. et Z. Fl. Jap. I. p. 131. t. 70. 

 var. simpliciflora, Nakai. 



