422 FOREST CULTURE AND 
of the tall Pimelea clavata, Labill., a West Australian 
bush, being particularly tenacious. 
Thymus capitatus, Hoffm. and Link. (Satureja 
capitata, L.)—Around the whole Mediterranean Sea. 
Since the times of Hippocrates, Theophrastos, and 
Galenus this small, scented shrub has been employed 
in medicine. 
Thymus Mastichina, L.—Spain, Portugal, Morocco. 
A half shrub of agreeable scent, used also occasionally 
in medicine. 
Thymus Serpillum, L. — Europe, Western Asia. » 
A perennial herb of some medicinal value. It would 
live on our highest alps. An essential oil can be 
obtained from it. One particular variety is lemon- 
scented. 
Thymus vulgaris, L.—The Garden-Thyme. South 
Europe. This small, shrubby plant is available for 
scent and for condiments. It is also well adapted for 
forming garden-edges. The essential oil of this plant 
can be separated into the crystalline thymol and the 
liquid thymen and cymol. T. stivus, Reut., and 
T. hiemalis, Lange, are closely cognate plants. Sev- 
eral other species with aromatic scent occur at the 
Mediterranean Sea. 
Tragopogon porrifolius, L.— The Salsify. Middle 
and Southern Europe, Middle Asia. The root of this 
herb is well known as a useful culinary vegetable. 
Trapa bicornis, L. fil.*—The Leng or Ling or Links 
of China. The nuts of this water-plant are extensively 
brought to market in that country. The horns of the 
fruit are blunt. The kernel, like that of the two fol- 
lowing species, is of excellent taste. The plant is reg- 
ularly cultivated in lakes and ponds of China, 
