248 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



spores. Clinton^ in a later discussion fails to find the difference 

 in the location of the pores and on the whole "sees no real reason 

 for considering Long's species as distinct." After an examination 

 of the specimens and a consideration of the whole matter the writer 

 agrees with Clinton that the grounds are insufficient for the 

 separation of a new species according to Long. The writer would 

 further disagree with Long's intimation that a character such as 

 the location of germ pores in the colorless thin-walled teliospores 

 is a fundamental character. If one were attempting to draw a 

 fine distinction between the specimens from Japan and those 

 collected in Connecticut the presence of large numbers of thick- 

 walled (2.5-3 Id) teliospores in the former as compared with one 

 moderately thick-walled (1-1.5 m) hi the latter is more noticeable 

 than any other point. This is probably due to the fact that the 

 Connecticut specimens are somewhat less mature. It has been 

 known for a long time that the same telial sorus in the genus 

 Gymnosporangium may contain two sorts of spores, thick-walled 

 ones and lighter colored thinner-walled ones. Long has attempted 

 to establish a third type intermediate between the two extremes. 

 This simply supports the idea that the thick- and thin-walled 

 spores do not represent two types but simply two extremes with 

 gradations existing between them. Referring again to the germ- 

 pores, it may be said that their location in the teliospores of this 

 genus is variable. There is a marked tendency for the pores in 

 both cells of two-celled spores to be near the septum but in the 

 uppermost cell there may be one at the apex with or without any 

 at or near the septum. It is entirely probable that the thinner- 

 walled spores may have a tendency toward terminal pores in the 

 apical cell when the thick-walled spores may show the usual 

 arrangement at the septum. It seems improbable that such a 

 tendency could be sufficiently marked to use it even as a minor 

 specific character. Accordingly, the full synonymy for the form 

 on the leaves and green stems of Jimiperus chinensis would be as 

 follows: 



Gymnosporangium koreaense (P. Hcnn.) Jackson, Jour. Agr. 

 Research 5: 1006. 191 6. 

 Roestelia koreaensis P. Ilcnn. W'arb. Monsunia 1: 5. 1900. 



• Clinton, G. P. Ann. Rei). Conn. Agr. Kxj). Sta. for 1914 (Report of the Botanist 

 for 1913): 15, 16. 1914. 



