THE EVOLl'TIOX OF PLANTS. 
33 
Helianthus tuherosus (Artichoke), 
Lactuca sativa (Lettuce). 
Lycopersicum esculentum (Tomato). 
Fapavcr somniferum (Opium Poppy). 
Bihes Grossularia (Gooseberry). 
Solanum Melongena (Aubergine). 
Spinacia oleracea (Spinach). 
Triticum monococcum. 
Subspontaneous differing- enough from the cultivated plants to be 
regarded by most authors as different species : — 
Allium ascalonicum. 
A Ilium Scorodoiyrasum. 
Secede cereale (Rye). 
Subspontaneous similar to cultivated forms, but possibly escaped 
from cultivation : — 
Amygdaliis per sic a. 
Avena sativa (Oat). 
Avenco orientalis. 
Cucurhita moschata. 
Gossypiam harhadense (Cotton). 
Holcus Sorghum. 
Lepidium sativum (Cress). 
Not known wild, or even half -wild, derived perhaps from cultivated 
species at the beginning of agriculture, but too different not to be 
commonly regarded as distinct species : — 
Hordeum liexasticlion. 
Hordeum vulgare (Barley). 
Triticum Spclta. 
Not found in a wild state or even half wild, but originating in 
countries which are not sufficiently explored : — 
Brassica chinensis. 
Capsicum annuum. 
Citrus nob His. 
Pisuin sativim (Common Pea). 
Zea 2Iajjs. 
At the time of writing his book, which was published in 1883, De 
Candolle's figures were twenty- seven kinds doubtful, or half wild, and 
twenty-seven not found wild. These numbers have since been slightly 
reduced. 
Let me bring to your notice quite a recent case of what Bailey regards 
as the origin of new species. In his " Survival of the Unlike " he figures 
several of the accepted species of the genus Lycopersicum, the Tomato 
genus. Then he draws attention to the 'Upright ' and the ' Mikado ' types of 
Tomato, and he points out that they are as much or even more different 
from each other and from their own common parent, than are the other 
long accepted species from one another. 
Further examples from the same author are several kinds of Maize 
and Beans. 
The Soy Bean, described by Maximowicz under the name Glycine 
D 
