. Carnegie Institution of Washington publication. GENUS STROMANTHE. 839 or a Calathea starch. In tlioir reactions these genera, while exhibiting the same typo of reaction- curve, fliffer so tliat one is loadily distinguishal)lo from tlie other. Comparing Maranta with Calathea, it will Ix' found tliat witii the exception of tiie gentian violet reaction, tlie reaction-curve throughout is liigher; and when compared with the curve of Slromanthe it is throughout distinctly iiiglier. Calathea shows higher reactivity, except in the chromic acid, pyrogallic acid, ferric chloride, and Purdy solution. T
. Carnegie Institution of Washington publication. GENUS STROMANTHE. 839 or a Calathea starch. In tlioir reactions these genera, while exhibiting the same typo of reaction- curve, fliffer so tliat one is loadily distinguishal)lo from tlie other. Comparing Maranta with Calathea, it will Ix' found tliat witii the exception of tiie gentian violet reaction, tlie reaction-curve throughout is liigher; and when compared with the curve of Slromanthe it is throughout distinctly iiiglier. Calathea shows higher reactivity, except in the chromic acid, pyrogallic acid, ferric chloride, and Purdy solution. Tlie differences brought out in the reactions are in accord with the generic classification of the botanist, except in the case of M. musaica, which, according to the peculiarities of the starch, is probably a Calathea. Chart No. 356. CI CA P> FC Po CI PA CA ^ ' â â PC PS. P 1 GV T 3 Chart No. 357. GV S T CI CA PA FC P S \ H D 60° \ \ \ \ \ ' \ , C Chart No. 358. P IGV T P 3 60 10 L L 56 11 75 60 '2 65 13 VL VL 60 MIMUTES C â GV 3 T CI CA PA FC P / \ / \ \ / \ > \ \ 1 \ \ / \ \ \ \ I \ \ \ \ \ 35 â¢30 Composite Curve of Mean Reaction-Intensities of Starch of Maranta. Composite Curve of Mean Reaction-Intensities of Starch of Calathea. Curve of Reaction-Intensities of Starch of Stromanthe 55. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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