NOTES ON OUR LOCAI, PLANTS 45 



Arum Linn., 1. c. in part. 

 Muricauda Dracontium (Linn.) Small, 1. c. 

 Arisaema Dracontium (Linn.) Schott. Melet., i, p. 17, (1832). 

 Arum- Dracontium Linn. Sp. PI. p. 964, (1753). 



Near St. Mary's Academy, both west and east in low grounds. 

 No. 593, U. N. D. Herb., also Nos. 9284, 9323, 2196, 1878, 3192, 

 592. No. 1997 near the St. Joseph River, Notre Dame, collected 

 by Dr. F. Powers (1889). Also at Munich, Mich., Bertrand, Lawton, 

 St. Joseph. Rum Village south of South Bend, University Farm 

 near Granger, North Liberty, Lake Maxinkuckee, H. W. Clarke. 



The seedlings of this plant I have not in early stages been 

 able to distinguish from those of Arisaema iriphyllum. They 

 begin to germinate from the seeds of the preceeding year about 

 the same time that the older plants appear, and somewhat later 

 than those of A. triphyllum. The corn seems to arise from the 

 endosperm part of the seed which persists along time, and so 

 layer after layer sloughs off from as the bottom the true corm 

 appears. 



PELTANDRA Rafinesque, Jr. Phys. 89 p. 103, (18 19). 



Artim Linn. 1. c. in part. 



Peltandra virginica (Linn.) Kunth, Enum PI. 3, p. 43, (1841). 



Peltandra undid at a Raf. 1. c. Arum virginicum, Linn. Sp. 

 PI. p. 966, (1753)- 



Common in our marshes. No. 9149 St. Joseph, Mich., also 

 Bertrand, Benton Harbor, San Jose Park. At the first named 

 locality the plant is extremely abundant south of the city along 

 the Pere Marquette R. R. I have never seen so much before at 

 any one place. Chain Lakes, Lakeville, N. Liberty, Michigan 

 City, Tamarack, Smith, also Lake Maxinkuckee. (H. W. Clarke.) 



The fruit of our Midland specimens as I have collected them 

 late in fall and quite ripe are green, less than half as large as those 

 of the East, Maryland and the District of Columbia. The seeds of the 

 eastern plants are of a deep purple black to violet color and ripen 

 much earlier. The fruit clusters too of our western plant are but 

 one half as large. The leaves are sometimes narrow, and with 

 small lobes or auricles at the base. It is quite possible that 

 study of fresh material will show our midland plant to be a 

 distinct one. 



