. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 2 BULLETIN 942, TJ. S. DEPARTMENT OF AGRICULTURE. branching, are 3 to 12 inches high, tufted, and puberulent. The main root is horizontal, branching-, and produces adventitious buds. Figure 2 of Plate I shows plants growing from adventitious buds on the root. The leaves, which are 1 to 2 inches long, are sessile, nu- merous, crowded, and irregularly alternate to verticillate, linear- foliform, revolute, and scabrous-puberulent. The flowers are in terminal branching umbels, few to many flowered, with short pedun- cles,
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 2 BULLETIN 942, TJ. S. DEPARTMENT OF AGRICULTURE. branching, are 3 to 12 inches high, tufted, and puberulent. The main root is horizontal, branching-, and produces adventitious buds. Figure 2 of Plate I shows plants growing from adventitious buds on the root. The leaves, which are 1 to 2 inches long, are sessile, nu- merous, crowded, and irregularly alternate to verticillate, linear- foliform, revolute, and scabrous-puberulent. The flowers are in terminal branching umbels, few to many flowered, with short pedun- cles, and are scabrous-puberulent. The greenish-white corolla has oblong lobes and white oblong hoods, which are hastate-sagittate in back view and shorter than the horn. The follicles are erect, puberu- lent and H to 3 inches long. The plant is found in adobe draws, in. Fig. 1.—Distribution of Asclepias pumila. dry plains, and in foothills from southeastern Montana and south- western North Dakota to the Texas Panhandle and central New Mexico. It is most abundant on the plains of Colorado. Text figure 1 shows the distribution of the plant. Although it has a root system and seeds similar to Asclepias galioides, it has not spread widely. It usually is scattered in small patches in draws. The systematic position of Asclepias pumila is discussed in United States Department of Agriculture Bulletin 800, pages 5 and 6. EXPERIMENTAL WORK WITH A. PUMILA. All experimental work which was carried on in the summer of 1919 was with sheep, and the material in all cases was administered by the balling 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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