No. 2, November, 1920] GENETICS 101 



713. Pomebot, C. S. "Sports" or bud-variation in the rose. Ainer. Rose Ann. 1919: 

 36-37. Mar. 15, 1919. — Rose has greater number of recognized bud varieties than :my other 

 plant. Carriers (1865) noted 50 standard roses of "bud-sport" origin, and hie list was in- 

 complete. 1918 Rose Annual men! toned 90 "bud-sport" varieties, none of which were included 

 in Carriebe's list. Killarney, Radiance and Ophelia are in a mutating stage of development 

 — more or less unstable — and give rise to numbers of bud varieties. No artificial method of 

 inducing "bud sports" is known. "Bud sports" are generally comparat ively stable. United 

 States Department of Agriculture, through the writer, desires to secure a complete list of all 

 varieties of plants which have originated as "bud sports." Information should include 

 name of parent variety, description of new form, place found, and name of finder. If desired, 

 such information would remain confidential. — Orland E. White. 



714. Punnett, R. C. Mendelism. 5th ed., 1SX 19 cm., v -{-219 p. ,7 pi. ,52 fig. Macmillan 

 & Co. : London, 1919. — This edition differs from the fourth in that several chapters have been 

 re-written, and two chapters (X and XII) have been added to present the results of the 

 Drosophila work, and the chromosome theory which has grown out of that work. Author does 

 not agree with Morgan that "as the result of these researches, the problem of heredity has 

 been solved," but he does concede that the work with Drosophila constitutes "the most note- 

 worthy contribution to genet ical studies" since the appearance of the last edition in 1912. — 

 G. h! Skull. 



715. Rasmusox, J. Mendelnde Chlorophyll-Faktoren bei Allium cepa. [Mendelian chloro- 

 phyll factors in Allium Cepa.] Hereditas 1: 128-134. 1920. 



716. Rasmusox, Hans. Uber einige genetische Versuche mit Papaver Rhoeas und Papaver 

 laevigatum. [Some genetical experiments with Papaver rhoeas and Papaver laevigatum.) 

 Hereditas 1: 107-114. 1920. 



717. Rosendahl, H. V. Tre for norra Europa nya Asplenier. [Three new Aspleniums 

 for northern Europe.] Bot. Notiser 1918: 161-168. 1918.— At Taberg in Sm&land (Sweden) 

 Asplenium adulterinum was found, there, as in other places in Europe, growing on serpentine 

 ground. Also the hybrid Asplenium adulterinum X viride was there to be seen. Its spores 

 are entirely undeveloped. — K. V. Ossian Dahlgren. 



718. Russell, S. F. Inheritance of characters in sheep. Oklahoma Agric. Exp. Sta. Bull. 

 126. 22 p., 8 fig. 1919. — From crosses of Shropshire-Dorset, Shropshire-Rambouillet, Dorset - 

 Rambouillet, Dorset-Merino, Shropshire-Merino, and back crosses, author concludes that 

 absence of folded skin, dark markings of the Shropshire, early breeding of Dorsets, and, in 

 females, hornless character of Shropshires, are dominant. A dominance of mutton conforma- 

 tion was maintained and Merinos and Rambouillets transmitted their density of fleece. Data 

 on time of lambing and relative prolificacy are given. — Elmer Roberts. 



719. Shamel, A. D. Origin of a grapefruit variety having pink-colored fruits. Jour. 

 Heredity 11: 157-160. 4 fig. April, 1920. 



720. Shull, Charles A. Variation in Abutilon Theophrasti Medici. Science 52: 41. 

 July 9, 1920. — Author's abstract of paper read before Seventh Annual Meeting, Kentucky 

 Academy of Science, Lexington, May 8, 1920: — This paper is a report of progress in an investi- 

 gation of variability in the number of carpels in the ovaries of A. Theophrasti. The range of 

 variability is from ten to seventeen, with the mode usually on 14 or 15. The material shows a 

 skewed frequency distribution, and tendency toward half-Gait on curves. A number of plants 

 have been found with half curves and the mode on 15. But whenever a number of plants are 

 counted together, there are usually a small number falling on 16. Only 3 specimens in about 

 8000 had 17 carpels to the ovary. The mode falls on a lower number in material collected in 

 Kansas than in similar material from Kentucky. The drier climate of Kansas is probably 

 responsible for this difference. If plants from an unfavorable habitat are counted the mode 



BOTANICAL ABSTRACTS, VOL. VI, NO. 2 



