336 Floristik etc. — Personalnachricht. 



d'articulation au style, par les fleurs ni velues, ni glanduleuses, par 

 les styles, ä proportion plus longs, par les sepales non souddes au 

 tiers inferieur. Jongmans. 



Griffiths, D., Addition al species of Opuntia. (Bull. Torrey 

 Bot. Club. XLIII. p. 523-531. PI. 30. 1916.) 



Opuntia columbiana (Pasco, Washington), spines and body of 

 the plant vary greatly in color, 0. cucumiformis (received from 

 european collections as O. ciribe Engelm.) but it has little relation to 

 that species. O. calantha, received from European collections as O. 

 microdisca Weber, but differs from that plant in almost every dia- 

 gnostic character. O. longiclada (PI. 30), from european collections. 

 O. platynoda, from european collections. O. microcarpa Engelm., new 

 description, it has been named by Engelmann from Stanley 's 

 figures and has now the first time been recognized (Solomonville, 

 Arizona, etc.). O. crystalenia (Cardenas, Mexico) common upon the 

 Mexican highlands and often cultivated. O. ithypetala, received 

 from Berlin as 0. Hanburyana O. Weber, it is more closely related 

 to O. Schumanni O. Weber, it does not agree with O. Hanburyana 

 in any particular. O. rubißora, from european collections as an 

 unpublished variety of 0. camanchica Engelm. et Bigel; it is, how- 

 ever, a good species. O. megalantha, received from Berlin as 0. 

 Bergeriana A. Weber. The character of the flowers excludes it 

 from this species. It differs also in general habit, nature of spina- 

 tion and form and character of joints. Jongmans. 



Long, W. H., Five undescribed species of Ravenelia. (Botan. 

 Gazette. LXI. p. 417—424. 1916.) 



Ravenelia roemerianae, on Acacia roemeriana, Texas, closely 

 related to R. vevsatilis\ R. morongiae, on Morongia uncinata, Texas; 

 R. thornberiana, on Acacia constricta paucispina, resembling R. 

 versatilis by the urediniospores having two rows of germ pores, but 

 distinguished by the fact that the two rows of germ pores are 

 equidistant from the equator of the spore; R. reticulatae, on Callian- 

 dra reticidata, Arizona, closely related to R. iexensis, but differs 

 from this species in having an entirely different host and in having 

 smaller and thinner-walled urediniospores, while practically all of 

 its telial characters are different; R. annulata, on Lysiloma latisili- 

 qua, Florida, closely related to R. lysilomae, but differs from this 

 species in its smaller and differently shaped sori, in its acuminate 

 urediniospores with hyaline cylindrical bases and 6 germ pores, 

 and in its smaller and very irregularly-shaped teliospore heads with 

 only about one-half as many spores to each head as R. lysilomae. 



Jongmans. 



Personalnaehrieht. 



Gestorben: Prof. Dr. Georg Klebs in Heidelberg am 14. 

 Oktober. 



Ansgeaeben: 1» Movember 1W18. 



Verlag von Gustav Fischer in Jena. 

 Buchd ruckerei A. W. Sijthoff in Leiden. 



