152 PHARMACAL PLANTS AND THEIR CULTURE. 



Taxus brevifolia Nutt. (Pacific yew) has bright red berries which are 

 edible, but the seeds are considered poisonous. The wood is very tough. 

 (Contrib. U. S. Nat. Herb. 7: 305.) 



814. Thalictrum species. Meadow rue. Ranunculacece. 



Many species seem to have medicinal or poisonous properties. Several 

 have been examined and found to contain alkaloids (thalictrine), which 

 is said to be a very powerful cardiac poison. The group requires 

 further study. 



815. Thalictrum polycarpum Wats. Meadow rue. Ranunculacece. 

 Perhaps contains thalictrine. The juice is applied externally to 



relieve headache. Decoction of roots used for colic and stomach-ache. 

 Said to have the action and properties of strychnine. (Am. Journ. 

 Pharm., page 336, 1881.) 



816. Thea (Camellia) japonica. Japanese tea. Ternstrcemiacece. 

 The leaves of this plant are much used as an adulterant of true tea. 



It does not contain any theine. (Proc. A. Ph. A. 27 : 209, 1879.) 



817. Thea (Camellia) sinensis Link. Tea. Ternstrcemiacece. 



A shrub extensively cultivated in China, Japan and other countries. 

 Has been introduced into the Southern States, with varying success. 

 Can be grown in California (southern part). 



818. Therofon (Borkinia) elatum Greene. Boykinia. Saxifragacece. 

 A delicately aromatic plant growing on wet, mossy banks. The Yuki 



Indians use it medicinally. (Contrib. U. S. Nat. Herb. 7: 353.) 



819. Thuja occidentalis L. Arbor vitae. Coniferce. 



This and other specimens are cultivated in the State. A decoction 

 is much used in the treatment of intermittent fevers, coughs, scurvy, 

 rheumatism, as an emmenagogue, etc. 



820. Thymus vulgaris L. Thyme. Labiatce. 



Thrives well in California, where it is a very common pot and garden 

 herb. (See statements under lavender.) The oil, which is made from 

 the leaves, is worth $1.50 per pound, the leaves are worth about thirty 

 cents per pound. 



821. Thysanocarpus elegans F. and M. Lace pod. Cruciferce. 



A leaf decoction is given in colic and stomach-ache. The seeds are 

 eaten. (Contrib. U. S. Nat. Herb. 7: 352.) 



822. Tilia americana L. Linden. Tiliacece. 



The saccharine exudation of the leaves resembles manna. The leaves 

 of T. argentia (T. tomentosa) are used as a substitute for tea in Greece. 

 (Proc. A. Ph. A. 31: 145, 1883.) 



