76 BOTANY OF LA SAL,LE COUNTY. 



PENTHORUM. P. Ditch Stone Crop. Erect with, 



scattered leaves and Y. G. flowers. 

 P. sedoides. I/eaves lanceolate, acute both ends; 



10 to 15 in. In ditches and ponds. 

 SEDUM. P. Stone Crop. Orpine. Leaves thick. 



juicy; petals 4 to 5; stamens 8 to 10. 

 S. ternatum. Prostrate; leaves in 3's obovate- 



cuneate; flowers in a 3 rowed cyme, W. Wet 



clayey banks; S. Ottawa 1 mile E. of 111. river 



bridge on bluff side. 

 SEMPERVITUM. Leaves thick, fleshy, fring-ed, 



sometimes blooms; stem 1 to \ l / 2 ft., flowers 



red. 

 S. tectorun. Spreads by offsets, sometimes used 



as a border for flower beds and for walks. 

 S. Telephium. Liveforever. Erect, leafy, smooth; 



leaves sessile, ovate, obtuse, serrate; flowers R. 



18 to 30 in. Aug. Sometimes found by roadside. 

 Order 38. HAMAMELACEAE- Witch Hazel. 



Stout shrubs or small, crooked, smooth barked 



trees. 

 HAMAMELIS. Witch Hazel. Small tree flowering- 



in autumn Sept. and on. 

 H. Virginiana. Leaves obovate or o\al, crenate, 



obliquely cordate; thick on short petioles; flow- 

 ers Y. in axils of leaves. Fruit a 2 celled nutlet; 



10 to 23 ft. 111. Valley. 

 Order 39. HALORAGEAE, Water Milfoils. 



Aquatic or marsh plants, n 

 MYRIOPHYLLUM. W^ater Milfoil. Parts of the 



flowers in 4's. Leaves often whorled, flowers 



in axils of upper leaves. 

 M. verticillatum. Leaves in thread-like lobes 



except those near the flowers which are deeply 



toothed. In ponds. 



