IN EXTRA-TROPICAL COUNTRIES. 87 



Comptonia asplenifolia, Solander. 



North America. The Sweet Fernbush. This dwarf shrub is 

 perhaps quite worthy of dissemination on sterile hills, as the 

 foliage contains nearly 10 per cent, of tannin, an extract of which 

 has come into the tanning trade. 



Condalia microphylla, Cavanilles. 



Chili and Argentina. The Piquillin. Bush yielding sweet, edible, 

 succulent fruit. 



Conium maculatum, Linne". 



The Hemlock. Europe, North Africa, North and West Asia. 

 A biennial herb, important for medicinal purposes. It should 

 however not be allowed to stray from its plantations, as it is apt 

 to be confounded with culinary species of Anthriscus, Chserophyllum, 

 and Myrrhis, and may thus cause, as a most dangerous plant, dis- 

 astrous mistakes. Active principles : coniin in the fruit, also 

 conhydrin. 



Conopodium denudatum, Koch. 



Western Europe. The small tuberous roots of this herb, when, 

 boiled or roasted, are available for food, and known as Earth 

 Chestnuts. The plant is allied to Carum Bu 



Conospermum Stoechadis, Endlicher. 



West Australia. The question has arisen whether this shrub, 

 with C. triplinervium (R. Brown), oughtptdt to be introduced ;into 

 our worst desert country. All kinds oApasture animals browse 

 with avidity on the long, tender, and downy flower stalks and 

 spikes without touching the foliage, thus not^strpying the plant 

 by close cropping. ^^i.***^ 



Convolvulus floridus, Linn6 fil. 



Canary Islands. A shrubby, not climbing or winding species. 

 With C. scoparius it yields the Atlantic Rosewood from stem and 

 root. 



Convolvulus Scammonia, Linne. 



Mediterranean regions and Asia Minor. A perennial herb, from 

 the root, which will grow 2 feet long, is obtained the purgative 

 resin Scammonia. Plants readily raised from seeds. To obtain 

 the resin a portion of the root is laid bare, and into incisions made 

 shells are inserted to collect the juice, which is daily removed (Maw). 



Convolvulus scoparius, Linne fil. 



Tenerifie. One of the Rosewood plants. 



