M&cJcenzie and Bush —'New Plants from Missouri. 89 



it is readily distinguished by its small, short and broad root- 

 leaves. The type specimens are the only ones seen. 



EXPLANATION OF ILLUSTRATIONS. 

 PLATB8 XII.-XVII. 



Plate III. — Muhlenbergia polystachya. Habit, reduced one-half, and 

 spikelet, X 6- 



Plate XIII. — Delphinium Nortonianum. Habit, reduced one-half, flower, 

 natural size, and seed, X 5. 



Plate XIV. — Hypericum pseudomaculatum. Habit, reduced one-half. 



Plate XIV. — Scutellaria cordifolia pilosissima. Habit, reduced one-half, 

 and flower, X 2. 



Plate XVI. — Solidago longipetiolata. Habit, reduced one- half, head, 

 natural size, and ray flower, X 3. 



Plate XVII. — Senecio pseudo-tomentosus. Habit, reduced one-half, head, 

 natural size, and disk flower, X 3. 



Issued June 9, 1902. 



