Naturalisation in Extra-Tropical Countries. 173 



The young pods, as well as the ripe seeds, of several varieties avail- 

 able for culinary use. It delights in rich soil, and ripens in hot 

 countries within three months ; its yield is about forty-fold, accord- 

 ing to Roxburgh. At Port Darwin its produce has been 180-fold 

 [M. Holtze]. The whole plant forms excellent stable-feed for 

 cattle,. D. cultratus (Thunberg) is a variety. 



Dorema Ammoniacum, D. Don. 



From Persia extending to Afghanistan and Turkestan, up to 

 4,000 feet. A tall perennial herb, yielding the gum-resin Am- 

 moniacum, which might be obtained from plants introduced, 

 especially as this plant will grow in dry regions. The Morocco 

 Ammoniacum is ascertained by Sir Joseph Hooker to be derived from 

 Ferula Tingitona (Linne). 



Dovyalis zizyphoides, E. Meyer. 



South-Africa. A thorny shrub. Berries used for a delicious 

 preserve [Mrs. Barber]. So also the fruits of D. celastroides 

 (Sonder). 



Dracsena cinnabarina, B. Balfour. 



Socotra. Attains 25 feet height and three feet stem-thickness. 

 One of the most remarkable plants extant, for scenic culture 

 particularly eligible, the branches short terminal and almost hori- 

 zontally crowded, giving the tree an umbrella-shaped outline. Pro- 

 duces like D. Draco, D. Ombet (Kotschy and Pryritsch) from Nubia 

 and D. schizantha (Baker) from Samoli red dye-resin. 



Dracaena Draco, Linn. 



The Dragonblood-Tree of the Canary Islands. An imposing 

 feature in scenic horticulture ; it yields one kind of Dragonblood- 

 resin. The famed Dragon-tree of Teneriffe, measured in 1831, 

 showed 46 feet stem-circumference, and even at the commencement 

 of the 15th century was celebrated for its age and large proportions. 

 A Dracsena is cultivated on Kilimanjaro up to 7,000 feet for hedges 

 [H. Johiistone]. 



Dracocephalum Moldavica, Lmn. 



Northern and Middle Asia. An annual showy scent-herb ; also of 

 some medicinal value and particularly for culinary condiment. 



Drimys "Winter!, R. and G. Forster. 



Extra-tropical South- America. The Canelo of Chili, sacred under 

 the name of Boighe to the original inhabitants. Attains in river- 

 valleys a height of 60 feet. The wood never attacked by insects 

 [Dr. Philippi]. Bark used for medicinal purposes. The Australian 

 and New Zealand species may be equally valuable. D. aroraatica 

 (F. v. M.) is particularly burning-spicy, even in its foliage, and is for 

 this reason called Australian Pepper-tree. 



