1909] CURRENT LITERATURE 473 



skr. 29:1-25. pis. 1, 2. 1908) have published 19 new species of fungi; these 

 are based on collections made in the Danish West Indies by C. Raunkiaer during 

 the years 1905 and 1906. W. Fawcett and A. B. Rendle (Journ. Botany 

 47:3-8. 1909) have published diagnoses of 12 new species of orchidaceous 

 plants from Jamaica; these are preliminary to a monograph of the orchids of 

 Jamaica. E. Ule (Engl. Bot. Jahrb. 42:191-238. 1908), in collaboration with 

 different specialists, under the title Beitrage zur Flora von Bahia I, has published 

 75 species and one variety as new to science; these are referred to families in the 

 Engler sequence from the Bromeliaceae to the Araliaceae and include the follow- 



ing new genera: 



Hi 



(Capparidaceae), and Itatiaia (Melastomaceae). E. Koehne {ibid. Beiblatt 

 97:47-53) records 5 new species and 4 new varieties in the Lythraceae from South 

 America, Africa, and Siam. Different authors (Kew Bull. 1908:432-441), 

 under the title Diagnoses Africanae XX VI, have published 19 new species and 



rms 



Androstachys) of the Euphorbiaceae; also {ibid. 445-451) in Decades kewensis: 

 Decas LI, 10 new species are described from various localities. E. L. Greene 

 (Leaflets Bot. Obs. & Crit. 2: 1-24. 1909) proposes a series of 60 new species and 

 3 new varieties of flowering plants, chiefly from western United States. J. Borx- 

 muller (Mitt. Thiir. Bot. Ver. 23:1-27. 1908), in continuation of his contribu- 

 tions under the title Novitiae Florae Orientalis, has published 23 species as new 

 to science, of which 17 belong to the genus Astragalus. A. Scherffel (Ber. 

 Deutsch. Bot. Gesells. 26a: 762-771. 1909), proposes a new genus {Asterococcus) 

 for the alga hitherto known as Pleurococcus superbus Cienk. N. L. Brittox 

 (Bull. N. Y. Bot. Gard. 5:311-318. 1909), in continuation of his studies on the 

 flora of the Bahamas, has described 6 new species of flowering plants. F. S. Earle 

 {ibid. 373-451), under the title of Genera of the North American Gill Fungi, 

 recognizes 147 genera for North America, and of these 38 are designated as 

 new. — J. M. Greenman. 



Hybrids of Oenothera.— DeVries has recently published several remarkable 

 papers on hybridization in Oenothera. The results concern a new type of heredi- 

 tary behavior, which is of great interest, showing as it does that we are only on the 



fields. Such discoveries, which open new vistas 



lese 



for the future, are of special value as a stimulus to research. The first of these 

 papers appeared in this journal 11 and announced the discovery of what are called 

 twin hybrids, and a later paper 1 2 dealt with triple hybrids. In certain cases, when 

 one of the wild species of the Onagra group is crossed with O. Lamarckiana or 

 one of its mutants, two types are produced in about equal numbers, both of which 

 breed true, the same types appearing in the different crosses. These types 

 DeVries calls O. laeta and O. velutina. In the case of O. scintillans and O. lata 



« DeVries, Hugo, On twin hybrids. Bot. Gazette 44:401-407. 1907 

 1* f On triple hybrids. Bot. Gazette 47: 1-8. 1909. 



