i 9 2o] CURRENT LITERATURE 535 



Fungi of North Carolina. — Coker 15 has published a systematic account 

 of certain genera of fungi occurring in North Carolina, illustrated by remark- 

 ably fine plates. Crater ellus is represented by 7 species and Cantharellus by 12. 

 Eomycenella, Tragia, and Nyctalis are each represented by a single species. A 

 very complete key to the genera of gill fungi (55 genera) is also included. 

 J. M. C. 



New genus of Pyrenomycetes. — Fitzpatrick 16 has described a new genus 

 (Rostronitschkia) of Pyrenomycetes from Porto Rico and Jamaica, parasitic 

 on the leaves of Gesneria albiflora. The species has been known for some 

 time, and described by Rehm (in litt.) as a new species of Nitschkia 

 (N. nervinicola) . Fitzpatrick has concluded that it is distinct enough from 

 that genus to be entitled to separate generic rank. — J. M. C. 



Mutation. — Costantin 17 has published a full discussion of the status 

 of the theory of mutation, weighing the evidence for and against it, as presented 

 in the extensive literature of the subject. His conclusion is that, in spite of 

 the violent assaults against it, "la theorie de la mutation reste debout." 

 The details of the discussion will be well worth consulting by those interested 

 in this controversy. — J. M. C. 



Suspensor of Capsella. — Soueges 18 has made a remarkably detailed study 

 of the early embryogeny of Capsella, especially in reference to the suspensor. 

 The numerous details cannot be repeated in a brief review, but they should 

 become familar to morphologists. That so much could be obtained from a 

 form so commonly studied is remarkable. — J. M. C. 



Tropical American Eupatoriums. — Robinson, 19 in continuing his studies 

 on the South American species of Eupatorium, has paid particular attention 

 to those of Peru and Bolivia. In the present contribution 37 new species 

 are described, and a review of the Peruvian material recognizes 82 species. 

 J. M. C. 



*s Coker, W. C, Craterellus, Cantharellus, and related genera in North Carolina; 

 with key to the genera of gill fungi. Jour. Elisha Mitchell Sci. Soc. 35:24-48. 



pis. 17. 1919. 



16 Fitzpatrick, H. M., Rostronitschkia, a new genus of Pyrenomycetes. Mycologia 

 11:163-167. pi. 11. 1919. 



*? Costantin, L, La mutation, etat actuel de la question. 



Ann 



xxxn 



18 Soueges, R., Les premieres divisions de I'oeuf et les differenciations du suspen- 

 ses chez le Capsella Bursa-pastoris Moench. Ann. Sci. Nat. Botanique X 1 : 1-28. 



figs. 69. 1919. 



*» Robinson, B. L., I. On tropical American Compositae, chiefly Eupatorieae. 

 II. A recension of the Eupatoriums of Peru. Proc. Amer. Acad. 55: 1-88. 1919. 



