774 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Phyllosticta coffeicola (Del.) on leaves, Vera Cruz, in company with 

 Stilbum flavidum (Cooke) ; and Phyllosticta comoensis (Del.) on leaves, 

 Gaboon. — M. C. C. 



Coffee, Sooty Fungus. La fumagine des Cafeiers. Par A. Putte- 



mans (Bull. Soc. Myc. France, xx. fasc. 3, 1904 ; 1 plate). — The two fungi 

 here described were found parasitic on coffee-leaves at Sao Paulo, Brazil. 

 The first, Capnodium brasiliensc (Putt.), resembles in its external features 

 other allied species of Capnodium in forming sooty patches on the living 

 leaves. The other species, Limacinia coffeicola (Putt.), is a sphaeriaceous 

 fungus, with perithecia clad with setas in the upper portion, and contain- 

 ing subfusoid biseptate sporidia (15-18 x 5-6 ft). — M. C. C. 



Colour Of Flowers. By F. W. Card (U.S.A. Exp. Stn. Bhodc 

 Is., Rep. 1903 ; pp. 213-214). — It has been reported that by watering 

 plants with a solution of sugar the red colours of leaves and flowers may 

 be deepened. The plants experimented with were Phlox, Balsam, varieties 

 of Aster, and ten- week Stocks, planted in plots in the open ground. A 

 reasonable application (up to 100 lb. per acre) of nitrate of soda, 

 muriate of potash, or sugar failed to have any appreciable effect on the 

 colours of the flowers. — F. J. C. 



Columelliaceae, The. By Ph. van Tieghem (Ann. Sc. Nat., Bot. 

 xviii. 1903, pp. 155-164). — The one genus and four species placed in this 

 order have proved difficult to classify. The author describes the results 

 of his examination of stem, leaf, and flower of three species, and assigns 

 the group a place near or within the Gesneriacece. — W. G. S. 



Commelinaceae, Researches on the Morphology of. By J. 



Clark (Flora, xciii. 1904, pp. 483-513 ; 31 cuts). — A discussion of the 

 morphological and symmetrical relations of stem, inflorescence, and 

 flowers. The cleistogamous flowers of Commelina benghalensis come off 

 on short lateral branches of the subterranean shoots, not the roots, as 

 hitherto believed. The veil over the anthers of Cochliostema is due to the 

 concrescence of 1-seriate multicellular hairs growing from the filament. 



M. H. 



Coniferae, The Double Vascular Bundle in the Leaf of some. 



By G. Chauveaud (Ann. Sc. Nat., Bot. xix. pp. 335-348 ; 9 figs. ; 

 1904). — Leaves of several species of Abies and Pinus have a double 

 vascular bundle, generally regarded as resulting from the forking of a 

 single bundle in the petiole. The author finds in very young leaves one 

 bundle only, which in development becomes double through the resorption 

 of the first- formed sieve tubes and wood elements. The drawings of 

 sections of developing leaves of Abies bracteata, Pinus Pinea, and P. 

 'sylvcstris show the nature of the division. Similar results were obtained 

 with other species. — W. G. S. 



Coniferae, Tissues in the Phloem. By G. Chauveaud (Ann. Sc. 

 Nat., Bot. xix. pp. 821-333 ; 4 figs. ; 1904). — From a series of investiga- 

 tions on Conifcrce the author distinguishes a tissue on the outside of the 

 phloem, which he calls "liber precurseur." This he describes and figures 



