108 
PHARMACAL PLANTS AND THEIR CULTURE. 
Hibiscus flowers are used in preparing shoe polish. Rich in a mucil- 
aginous substance. 
433. Hibiscus californicus Kell. Rosemallow. Malvacece. 
Has not yet been investigated chemically. 
434. Hierochloa macrophylla Thurb. Holy grass. Large leaved 
vanilla grass. Gramineaz. 
Found in the coast redwood belt of California. Very fragrant, due 
to the presence of cumarin. Retains its fragrance for thirty years or 
more. Of possible great value to perfumers in the manufacture of 
sachet powders. Almost exterminated in Marin County. Attempts 
should be made to perpetuate it by cultivation. 
435. Humulus lupulus L. Hop. Moracece. 
Hop culture is one of the most important industries in the State. 
The plant has escaped from cultivation in different parts of the State. 
Strobiles much used by the Indians in the form of poultices for swell- 
ings and bruises. 
436. Hydrangea arborescens L. Hydrangea. Saxifragacem. 
Extensively cultivated as an ornamental plant. The root has long- 
been known medicinally. The Cherokee Indians and white settlers use 
a decoction for calculus troubles. (Am. Journ. Pharm., 122, 1887.) 
437. Hydrastis canadensis L. Golden seal. Ranunculacece. 
This native of Canada and the eastexm United States is becoming- 
very rare, due to the herb gatherers. Whereas the rhizomes sold for 
about ten cents per pound some years ago, it is now worth over three 
dollars per pound. Cultural attempts are now being made in various 
parts of the United States. The efforts in California are thus far 
purely experimental. H. L. Scherb of Los Angeles has made attempts 
at its culture. Some plants received from him for the botanic garden 
in Golden Gate Park grew exceedingly well. Golden seal requires a 
moist, rich, shady soil. In fact, it is grown much like ginseng. The 
rhizomes with rootlets attached are dxxg up and dried. A most valu- 
able medicine for which there will be continued good demand. (See 
Farmers’ Bulletin No. 51, United States Department of Agriculture, 
for full particulars as to culture, etc.) 
438. Hyoscyamus niger L. Henbane. Solanacece. 
An introduced plant which has escaped from cultivation. Well 
known medicinally. (See Chap. III.) (Henbane culture in England. 
Proc. A. Ph. A. 25 : 136, 1877.) (W. A. Puckner, The Assay of Hyos- 
cyamus. Proc. A. Ph. A. 47 : 297-301, 1899.) 
439. Hypericum species. St. John’s wort. Hypericacece. 
The native species require further study. Perhaps have properties 
