94 
PHARMACAL PLANTS AND THEIR CULTURE. 
312. Diplacus glutinosus Wendl. Glutinous monkey flower. Scro- 
phulariacece. 
313. Distichlis spicata Greene. Salt grass. Liliacece. 
Used in indigestion. Requires careful study as to its reputed prop- 
erties. 
314. Drosera rotundifolia L. Sundew. Droseracece. 
Introduced, found in conservatories and other places. This species, 
as well as D. longifolia L. and varieties, are said to be useful in 
phthisis. Well known medicinally, though no longer officinal. Ap- 
plied in the form of poultices to corns, bunions and warts. Used in 
Italy to make a liquor called “rossoli.” (Proc. A. Ph. A. 27 : 225-227, 
1879.) 
315. Dryopteris felix-mas (L.) Schott and D. marginale (L.) 
Gray. Male ferns. Filicinece. 
These important drug plants, of which the rhizomes and stipes yield 
the oleoresin (male fern oil) which is the most reliable remedy to 
expel tapeworm. May readily be grown in moist shady places. 
Whether they can be grown profitably remains to be determined. The 
grower should also market and manufacture the oil, which is worth 
thirty-five cents per ounce retail. The rhizomes are worth about 
twenty-five cents per pound. 
316. Duboisia species. Solanacece. 
These plants are readily grown, and some of them should be more 
carefully investigated as to chemical constituency and medicinal 
properties. D. myoporoides is well known; contains duboisine, an 
alkaloid identical with hyoscyamine. 
317. Duboisia myoporoides R. Solanacece. 
Grown in experimental gardens. Properties like those of bella- 
donna and stramonium. Poisonous. (See 316.) 
318. Echinacea angustifolia D.C. Niggerhead. Compositce. 
Said to be an antidote for rattlesnake bite, for blood poisoning, etc. 
Highly spoken of by such authority as J. U. Lloyd. Used as a cancer 
remedy and blood purifier. (Am. Journ. Pharm., 15-20, 1904.) 
This species is closely related to E. purpureum, known as black 
Sampson. Both species are well worthy of more careful study as 
regards their several reputed properties. Much used by the eclectics. 
319. Echinocactus cylindrica. Niggerhead. Hedgehog thistle. 
Cactacece. 
The young shoots and seeds are eaten. Juicy, rich in water. 
