— 206 — 



and at the same time the type of its fruits is very common in 

 America [Washln gt onia, E a f . ^ Spormolepis, Raf. some 

 M u s i n e n]. 



The aim of this article is to turn the attention of my colleagues 

 on the interesting relationship of Xorth American and Eurasian 

 Apioideae in their styles, but I allow myself to make some 

 provisory conclusions: 



The A m m i a с e a e — A p i о i d e a e of North America differ from 

 the Eurasian ones by the type of iheir styles. 



The type „stylopodium wanting'- [Cou It. and Rose] is proper 

 exclusively to the Apioideae of North America, Avhere it is cha- 

 racteristical for 53,57% of endemic generical representatives. 



The type ..stylopodium conical styles very short" ist proper exclu- 

 sively to the Apioideae of America and to one genus common 

 with Eurasia, which however as we must admit have Xeogean 

 origin. 



With the exception of three endemic genera, the affinity of which 

 are needing explication, alle the rest of Apioideae with the type 

 ..stylopodium flat, broad" are visibly adventives, neAv-comers from 

 Eurasia or derivatives of Eurasian aborigines. 



I want to draw attention to the group of features which must 

 be also exposed to a statistical analysis; unfortunately I have as 

 yet too insufficient material for it. "When studying the endemic 

 species of Bupleurum, B. americanum, C. et R. '^, I re- 

 marked specialy long styles; I did not notice anytliing similar 

 among the Bupleurum, all of which I know very well. Then I 

 repeatedly persuaded myself, that, generally speaking, the Xorth 

 American A m m i a с e a e in comparison Avith the Eurasian ones, differ 

 by the extreme length of their styles; for example, some of 

 Tausch! a. Schlecht, have styles, that are two or more times 

 longer than the fruit. There are, naturally, some exceptions '; then, as 

 it seems to me, the violet and purplish colour of stylopodia is more 



1 By W ash ingt onia stylopodia are л-егу various: mostly conical, or 

 loAv and flat, styles short or elongated. 



- Koso-Poliansky Journ. russe de botan. 1913 3 — 9, tab. 2. 



'* For instance S i u m N о v a с M e x i с a e, K.-P о 1. from Xorth America 

 with stylopodium about as long as style and Eurasian Sium erectum, 

 H u d s. with stylopodium much shorter than style. 



