9 6 



Ru tacecz Die tarn mis. 



1. D. dlbus (fig. 62). 

 suffrutescent herb about 



1. DICTAMNUS, 



Calyx 5-partite, deciduous, the lower segments longest. 

 Petals 5, the four upper ones ascending, the lower one distant, 

 turned downwards. Disk annular, fleshy. Stamens 10, free, 

 declinate. Fruit consisting of five confluent rostrate 2- or 3- 

 seeded carpels, dehiscing in two valves. One species, widely 

 dispersed in the north temperate zone in the Old World. This 

 is a very variable plant, and has been divided into several 

 species by some authors. A classical name. 



Fraxinella or Dittany. An erect 

 feet high. Leaves alternate, un- 

 equally pinnate, exhaling a 

 powerful odour when rubbed. 

 This is a handsome plant and 

 a very old inhabitant of cot- 

 tage gardens. There are rose, 

 bright red and white varieties. 

 Native of Central and South- 

 ern Europe, flowering in early 

 Spring. 



2. PTELEA. 



Deciduous shrubs or small 

 trees with bitter bark, usually 

 alternate trifoliolate or pin- 

 nate leaves with pellucid dots, 

 cymose inconspicuous yellowish 

 green flowers, and orbicular 

 winged fruits. Flowers poly- 

 gamous. Calyx 4- or 5-partite, 

 lobes imbricate. Petals 4 or 5, 

 much longer than the calyx. 

 Stamens 4 or 5. Ovary 2- or 

 3-celled, with 2 ovules in each 

 cell. There are six species, 

 from temperate North Ame- 

 rica. TTTsXsa is the Greek name of Ulmus campestris, which 

 like this has winged fruits. 



1. P. trifoliata. Hop-tree. A small tree of no special 

 merit, with trifoliolate glabrous yellowish green leaves on long- 

 petioles ; leaflets ovate, obscurely crenate. The leaves and fruits 

 when bruised emit a powerful odour resembling hops. There 

 is a variegated variety. 



Fig. 62. Dictamnus albus. ( nat, size.) 



