NOTES AND ABSTRACTS. . 139 



g 



o, and it is found that the plants will withstand long flooding if the water 

 is of a low temperature, but if it be above 65 degrees the flooding must be 

 of short duration.— i<\ J. C. 



Crossing* Experiments with Sweet Corn. By B. D. Halstead and 

 J. A. Kelsey {U.S.A. Exp.Stn.Neio Jersey, Bull. 170 ; February 1904).— 

 An historical account of corn (maize) is given, with some botanical notes 

 concerning the plant ; then follows a general account of the experiments 

 in cross- and in-breeding corn. — F. J. G. 



CynorchiS COmpacta. By R. A. Rolfe (Bot. Mag. tab. 8053). — 

 Natal. Nat. ord. Orchidaceae ; tribe Ophrydcac. A dwarf terrestrial herb. 

 Scape 4-7 inches, many-flowered ; flowers white, with red-spotted lip. 



G.H. 



Cypripedium tibeticum. By R. A. Rolfe (Bot. Mag. tab. 8070).— 

 Eastern Tibet and Western China. Nat. ord. Orchidaceae ; tribe 

 Cypripedieac. A terrestrial herb t>-1 foot high. Leaves 2-5 inches long ; 

 flowers solitary, 4 inches across, striped and reticulated with reddish- 

 purple on a paler ground ; front of lip suffused with dark purple. — G. H. 



Cytisus Andreanus. By L. Mottet. (Rev. Hort. June 16, 1906, 

 pp. 313, 314). — Description of several varieties of this pretty bloom raised 

 by Smith, of Newry, Ireland. Planting on own roots is advised, as although 

 development is more rapid when grafted on the laburnum as usual, the 

 latter only last a few years. — C. T. D. 



Daffodil Yellow Stripe Disease. By Fanny W. Currey (Garden, 

 No. 1797, p. 230; April 28, 1906).— With regard to this malady I venture 

 to make a suggestion which I think may possibly be of use. I believe the 

 stripe may be a result of over-division of bulbs. I have never seen it in 

 old-established clumps. I rarely see it among first-sized bulbs, or even 

 among first- sized offsets. I once had a stock of which the foliage was 

 absolutely perfect as to first- and second-sized bulb, but the third and 

 fourth sizes were streaky. They were replanted to grow on, and next 

 year there was not a trace of streakiness among them. Division of bulbs, 

 except when it occurs by a natural falling asunder of the parts, produces 

 some bleeding, and it appears to me possible that the smaller portion of 

 the divided bulb does not retain sufficient colouring matter. — E. T. G. 



Dahlia, The. By Charles Baltet (Rev. Hort. pp. 209-212; 

 2 figs. ; May 1, 1906). — An interesting article on the origin of the 

 dahlia and its introduction from Mexico, with a description of the 

 various distinct groups into which it has sported. The illustration of 

 the wild type is particularly interesting as a contrast. —C. T. D. 



Dahlias, Cuttings Of. By Rivoire pcrc ct pis (Le Jardin, vol. xxi. 

 No. 481, p. 70; 3 figs.; March 5, 1907).— Take last year's tubers in 

 March — not before. Clean well and wipe off all mould &c. Bury in 

 frame, with good soil mixed with sand, up to the neck of the tuber. 

 Water lightly and cover at night. In about three weeks the shoots will 



