. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Contribution from the Bureau of Fiant Industry WM. A. TAYLOR, Chief. Washington, D. C. January 19, 1917 THE IDENTIFICATION OF GRASSES BY THEIR VEGETATIVE CHARACTERS. By Lyman Carrier, Agronomist in Pasture Investigations, Forage-Crop Investigations. CONTENTS. Page. Introduction 1 What is meant by the term "grass" 2 Characteristics of grasses before the blooming stage 2 How to use the key in identifying grasses 4 Analytical key to grass seedlings 6 Detailed descriptions of forty-eight seedling grasses 9 Identi
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Contribution from the Bureau of Fiant Industry WM. A. TAYLOR, Chief. Washington, D. C. January 19, 1917 THE IDENTIFICATION OF GRASSES BY THEIR VEGETATIVE CHARACTERS. By Lyman Carrier, Agronomist in Pasture Investigations, Forage-Crop Investigations. CONTENTS. Page. Introduction 1 What is meant by the term "grass" 2 Characteristics of grasses before the blooming stage 2 How to use the key in identifying grasses 4 Analytical key to grass seedlings 6 Detailed descriptions of forty-eight seedling grasses 9 Identification of small-grain seedlings 26 Analytical key to small-grain seedlings 27 Detailed descriptions of eight small-grain seedlings 27 INTRODUCTION. It is often desirable to identify grasses by their vegetative char- acters. The usual botanical classifications based on the structure of the flowering parts are not useful for this purpose. Any mention of the leaves which may be included in botanical descriptions is usually for the purpose of confirming an identification. In lawns and pastures the best grasses are seldom allowed to reach the flower- ing stage, and some grasses change so materially in appearance as they reach maturity that it is difficult to see a resemblance to the young plants in those that have headed. There have been previous attempts to work out keys for identi- fying young grasses, especially those of McAlpine,1 of Ward,2 and of Stebler and Schroter4 have described and illustrated fully the vegetative characters of the most common hay and pasture 1 McAlpine, A. N. How to know grasses by the leaves. In Standard Cyclopedia of Modern Agriculture, v. 6, p. 153. 1890. 2 Ward, H. M. Grasses. 190 p., illus. Cambridge, 1901. 3 Percival, John. Agricultural botany. 798 p., illus. London, 1900. i Stebler, F. G., and Schroter, Carl. The best forage plants. 3 v. in 1, illus., pi. London, 1889. 61167°—Bull. 461—17 1. Please note that these images are extra
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