MICHIGAN ACADEMY OF SCIENCE. 189 



very great interest to growers of medicinal plants as our supplies of the 

 otlieial drug have heeu very scarce. At the present time we are using a 

 Japanese Valerian and it is very doubtful if it has the 'same properties as the 

 European plant which is also the species cultivated in the United States. 



Sinapis alba Li. (Yellow mustard) and Sinapia nigra L. (Brown mustard). 

 The mustard plants are extensively cultivated in England, Holland, Germany 

 and the United States. California furnishes considerable of the yellow mus- 

 tard and North Dakota of the brown mustard. These plants are easily grown, 

 the seeds being planted in the open in early June, the plants flowering and 

 fruiting in August. The tops are cut down and the seeds obtained by thresh- 

 ing. At the University of Michigan, several varieties were grown including 

 Chinese yellow, Indian Tori, California brown mustard and rape seed. 



Iris gcrmanica L. (Orris root). This plant is a native of Italy and is 

 cultivated in a number of countries bordering the Mediterranean. The com- 

 merce supplies are obtained chiefly from the neighborhood of Florence. It is 

 chiefly used m the making of sachets and used in the perfuming of toilet 

 preparations. 



For some years past the botanic gardens of the University of Michigan 

 have contained small plots of several medicinal plants. The latter have 

 over-wintered and done remarkably well. These plants are of considerable 

 interest and should be grown on a large scale. Among these is the ordinary 

 Celandine which contains a principle which in its physiological action is a 

 good deal like morphine but is better tolerated than that drug by certain 

 classes of people and especially children. Lavender is an important perfume 

 yielding plant and the flowers produced at Ann Arbor are among the most 

 aromatic I have seen. The species of Chrysanthemum which furnish Insect 

 I'owder thrive very well in this locality also. 



In addition to the above mentioned plants, which have been grown during 

 the past summer in Ann Arbor, the writer has had under ciiltivation either 

 in the greenhouse or out in the open a large number of other plants, most of 

 which can be successfully grown. They are : 



Aconitum Napellus L. _ Convallaria majalis L. 

 Aloe vera L. Cypripedium parviflorum Salisb. 



Aloe ferox Mill. . Cypripedium parviflorum Salisb. var. 



Anemone Pulsatilla L. pubescens (Willd.) Knight. 



Aristolochia Serpentaria L. DQphne Mezerum L. 



Asclepias tuberosum L. Eucalyptus OlobuUis Labill. 



Aspidium marginale (L.) Sw. Gardenia jasminoides Ellis. 



Brauneria angustifolia (DC.) Heller. Qelsemium sempervirens {Ij.) AM. f. 

 Brauneria pallida (Nutt.) Britton. Geranium maculatum L. 

 Cereus grandiflorus L. Glycyrrhisa glabra L. 



Chamaelirium luteum (L.) Gray. 



