248 MORPHOLOGY, ETC., VASC. PLANTS [Bot. Absts., Vol. V, 



1891. Hamilton, A. A. Root fasciation in cycads. Australian Nat. 4: 134. 1920. — All 

 cycadean genera produce root nodules primarily caused by infection with Bacillus radici- 

 cola.—T. C. Frye. 



1892. Hollow ay, J. E. Studies in the New Zealand species of the genus Lycopodium: 

 Part III. The plasticity of the species. Trans, and Proc. New Zealand Inst. 51: 161-261. 

 PL 9-14, 16 fig. 1919. — Eleven species of Lycopodium occur in New Zealand. A compara- 

 tive study of these, character by character, shows that there is a great range of variability 

 in the plants, but at the same time a distinct interdependence of characters. The author 

 concludes with a discussion of the relationships and phylogeny of the species of Lycopodium 

 in the light of his observations. — L. W. Riddle. 



1893. Jivanna Rao, P. S. The formation of leaf-bladders in Eichornia speciosa Kunth 

 (water hyacinth). Jour. Indian Bot. 1: 219-225. 5 fig. 1920. — Bladder formation near the 

 base of the petiole is the result of high water content in the plant. All gradations are found 

 from well developed bladders on plants growing in an abundant supply of fresh water, to blad- 

 derless leaves on plants growing in pools that are drying up or in mud. An account of the 

 structure of the bladder is given. — Winfield Dudgeon. 



1894. Kashyap, S. R. Abnormal number of needles in the spuis of Pinus longifolia. Jour. 

 Indian Bot. 1: 115-119. 1919. — The number of leaves on spur shoots of mature trees is quite 

 constantly 3, but an examination of 100 4-year-old nursery seedlings revealed 57 bearing spurs 

 with from 2 to 5 leaves. The number of leaves was 4 in 83.8 per cent of the abnormal shoots, 

 from w r hich the author concludes that "a 3-leaved spur has been derived from a spur with more 

 leaves, and that pines with a small number of needles in their spurs are more specialized than 

 species with a larger number of needles." — Winfield Dudgeon. 



1895. Kenoyer, L. A. Dimorphic carpellate flower of Acalypha indica L. Jour. Indian 

 Bot. 1 : 3-7. 21 fig. 1919. — The carpellate flowers on the lower branches of the inflorescence 

 are trilocular; those at the tips of the staminate cymes are unilocular. In the latter there 

 are no traces of other carpels. — A. J . Eames. 



1896. Kirby, R. S., and J. S. Martin. A study of the formation and development of 

 the flower buds of Jonathan and Giimes Golden in relation to different types (clover sod, blue 

 grass sod, cover crop, and clean tillage) of soil management. Proc. Iowa Acad. Sci. 25: 265- 

 290. PI. 7. 1920— See Bot. Absts. 5, Entry 1750. 



1897. Manaresi, A. Sulla biologia fiorale del pesco. 2 nota. [On the floral biology of 

 the peach. 2nd note.] Staz. Sperim. Agrarie Italiane 52:42-67. 1919. — See Bot. Absts. 5, 

 Entry 1757. 



1898. Mascre.M. Sur le role de 1'assise nourriciere du pollen. [The role of the tapetum. ] 

 Compt. Rend. Acad. Sci. Paris 168: 1120-1122. 4 fig. 1919. — An account of the changes taking 

 place in the cytoplasm of the tapetal cells during maturation and spore formation of Datura 

 arborea L. At tetrad formation the cytoplasm contains numerous mitochondrial threads 

 and granules, together with tannin corpuscules. The cells are usually multinucleate. In 

 older stages the nuclei disappear, after fusing in pairs; the mitochondria also disappear. As 

 the cytoplasm becomes vacuolate numerous deutoplasmic vesicles appear, as well as some 

 starch. — F . B. Wann. 



1899. Metcalp, Woodbridge. A precocious youngster. Amer. Forestry 26: 15. 1 fig. 

 1920. — A demonstration of the fact that coniferous cones are simply modified branches, the 

 leaves of which are changed in shape to form the cone scales. — Chas. H. Otis. 



1900. Miller, Robert B. The wood of Machaerium Whitfordii. Bull. Torrey Bot. 

 Club 47: 73-79. 8 fig. 1920.— See Bot. Absts. 5, Entry 218. 



