ABSTRACTS. 



211 



general information respecting the kind of fungi growing on forest trees 

 and their relation to forest problems. It then describes the coniferous 

 trees found in the New England forests, followed by detailed accounts of 

 the occurrence and extent of injury by six or eight particular species of 

 Poh"iiorus, Trametes, and Agaricus. — D. H. 



Convolvulaceae, African. By Dr. A. B. Rendle (Journ. Bot. 457 

 and 458, pp. 12, 55 ; January and February 1901). — Descriptions of several 

 new species of Ipomoea, Astrochh^na, Convolvulus, and Merremia. 



G^. S'. 



Co-operation in Great Britain. Agricultural {Ann. Ag. p. 161 ; 

 25 4/1901).— C. H. 



Cortusa. By G. Eeuthe (Gar^/. Mag. 2476, p. 225; 13 4 1901).— 

 Descriptive note on the two cultivated species in this interesting genus 

 of hardy perennials allied to Primula. Both C. Matfhioli and C. puhens 

 are high alpine plants suitable for rock garden culture. — W. G. 



Coryanthes Mastersiana. Anon. {Gard. Chron. p. 19; fig. 9 ; 

 12/1/1901).— Colombm, 1891.— S. S. 



Crataegus, New American species of. By Angiolo Pucci 



{Bull. d. B. Soc. Tosc. Ort. 3, p. 75 ; March 1901). — C. Engclmanni, 

 C. Canbiji, C. Peoriensis, C. pratensis, C. sicbmollis, C. diiatata, C.Holmesi- 

 ana, C. Jonesce. — W. C. W. 



Crataegus, New American Species of. By E. Andre, quoting 

 Prof. Hargent {Bev. Horf. p. Ill ; January 1901).— C. T. D. 



Crocus MarathonisiuS. By E. A. Bowles {Gard. Chron. p. 40 ; 

 19/1 1901). — A note on the apparent confusion of two distinct species 

 under one name. — G. S. S. 



Crops of 1900, The British. Anon. {Joum. Bd. Agri. vol. vii. 

 No. 4, pp. 433-437 ; March 1901). — Official estimates are given of various 

 crops, including cereals. Beans, Peas, Potatos, and other root crops. 

 Potatos were considerably and Peas slightly below the decennial average. 

 The estimated total i)roduce of the Potato crop of Great Britain in 1900 

 is given as 2,735,000 tons, as against 3,077,000 in 1899; estimated at 4*87 

 per acre in 1900 and 5*62 in 1899. —If . X 



Crossing Plants, Experiments in. By Byron D. Halstead {Xcw 

 Jersey State Agri. Exp. St. Bepf. ; eight plates ; Oct. 1900). — A report 

 dealing with results of experiments in crossing Cucumbers, Lima Beans, 

 Tomatos, Maize, and Salsify. A new species = hybrid of Tragopogon is 

 described.— i). H. 



Cucumbers, Fungus Diseases of. Anon {Gard. Mag. 2480, 



p. 294 ; 11 5 1901). — A paper read before the Massachusetts Horticultural 



p 2 



