SCIENTIFIC AND POPULAR. 135 



669. DICKS(3nIA, L'Her. Dicksonia- Polypodiaceae, 



Named for James Dickson, English botanist, d, 1822, Syn. 

 Balantium, in part. Large Ferns, tropical species often arbor- 

 escent. About 50 species; 1 in U. S. 



a. D. chrysotricha Moore (B. chrysotrichum Hassk. ). Java. 

 CapiUanj chaff from base of stipes is Paku-kidang or Pakoe- 

 kidang, used in surgery as a styptic, see Alsophila, and Cibotium. 



670. DIC6RIA, T. & Gr. Dicoria. Compositae. 



From Greek, "two bugs", alluding to appearance of akenes. 

 Herbs. Two known species, Arizona to California. 



DICRA^OCARPUS, Gray. Dicranocarpus. Compositae. 



From Greek, ' 'pitchfork fruit' '. An inconspicuous annual 

 ?rb. One species, Texas. 



672. DICRALUUS, Hook. f. Dicraurus. Amarauthaceae. 



Herb. One species, Texas. 



678. DICTAMNUS, L. - Dittany. - Rutaceae. 



The classical name from Mt. Dicte. Strong-scented herb 

 with showy flowers. One species. 



a. D. albus L. (D. Fraxinella Pers. ). Europe. White Fraxinella, 

 European or Bastard Dittany, Dittander, Garden Ginger. 

 Moot; Kad. dictamni albae. Bad. fraxinellae; Ger. Weisse Dip- 

 tamwurzel, Escherwurzel, Aeschenwurzel, Spechtwurzel; anti- 

 spasmodic, diuretic. 



674. DICIPELLIUM, Nees. Clove-bark tree. Lauraceae. 

 From Greek, "two goblets". Syn. Persea, Licaria, in part. 



Aromatic tree. One species. 



a. D. caryophyllatum Xees. (P. caryophyllata Mart.. L. Guian- 

 ensis Aubl., apparently the oldest name.). Brazil. Clove 

 Bark tree; Ger. Cravobaum, Nelkenzimmtbaum. Bark; Clove- 

 bark, Clove Cinnamon, Cassia caryophyllata. Cortex caryophyl- 

 lati; resembles cinnamon. The wood, called rose- wood, yields 

 oil of Licaria or of Lign-aloes, used in perfumery. See also 

 Aquilaria. 



675. DIBIPLIS, Eaf. Water Purslane. Lythraceae. 



From Greek, "twice double". Aquatic or "amphibious" 

 herb. One species, U. S. Closely related to the Old World 

 genus Peplis. 



676. DIERVILLA,Moench. Bush Honey-suckle. Caprifoliaoeae. 

 Named for Dr. Dierville of Canada. Syn. Lonicera, in part. 



Shrubs, related to Weigela. Three species; all of U. S. 



a. D. Diervilla (L.) MacM. (L. DiervillaL., D. trifida Moench., 

 D. Canadensis Willd. ) . Canada and northeastern U. S. Bush 

 Honey-suckle, Gravel-weed, Life-of-man. Boot, Uaves and twiys, 

 diuretic, astringent, alterative. 



677. DIGrrALIS, L. Foxglove. Scrophulariaceae. 



From Latin, (glove) "finger". Robust herbs with showy 

 flowers in racemes. About 20 species, Europe and Asia. 



