SCIENTIFIC AND POPULAR. 137 



V'd. D. obtusifolia Willd, Mexico. Zapote prieto, Zapote negro; 

 Bark and leaves astringent, tonic. 



e. D. Virginiana L. Khode Island to Florida and west to Texas 

 and Kansas. Common Persimmon (Parsimon), Seeded Plum, 

 Winter Plum, Possum-wood, Lotus-tree, Jove's-fruit, North 

 American Ebony; Ger. Amerikanische Dattelpfiaume; Fr. 

 Plaqueminier de Virginie. Fruit, Virginian Date-plum|, 

 esculent. Unripe fruit a powerful astringent. In India (f ) D. 

 Embryopteris Pers., called Uaub. is also used as an astringent. 



682. DIPHOLIS, DC. .Bully-tree*. Sapotaceae. 



From Greek, "double scale". Syn. Bumelia, in part. 

 Shrubs or trees. About 3 species, West Indies; 1 in S. Florida. 



683. DIPHYLLEIA, Michx. Umbrella-leaf. Berberidaceae. 



From Greek, "double leaf. Herbs resembling Podo- 

 phyllum, with cymose flowers. Two species, one of Japan, 

 one of soutlieastern U. S. 



684. DIPLACUS, Nutt. Diplacus. Serophiilariaceae. 



Syn. Mimulus, in part. Glutinous evergreen sub-shrubs 

 with solitary showy flowers, New World; 10 in U. S. 



686. DIPLOTAXIS, DC. Kocket, Crossweed. Cruciferae. 



From Greek, "double ranked", of the seeds. Syn. Sisym- 

 brium, Brassica, in part. Herbs resembling Mustard. About 

 30 species. Old W^orld; 2 adv. in U. S. 



a. D. muralis (L. ) DC. (S. murale L. ). Europe, adv. in U. S. 

 Sand Kocket, Cross-weed, Flix-weed. 



686. DIPSACUS, L. . Teasel. . Dipsaceae. 



The Greek name, "thirst plant". Kobust herbs with flowers 

 in dense spinv heads. About 15 species. Old World; 2 nat. in 

 U. S. 



a. D. Fulloniim L. Europe; adv. in U. S. Probably only a 



variety of (b). Fuller's Teasel, Fuller's Thistle, FuUer's-weed, 

 Draper's Teasel, Clothier's-brush, with other synonyms of (b). 

 Heads used to raise a "nap" in cloth. 



b. D. sy^vestris Mill. (D. Fullonum L. in part). Europe and 



northern Asia, nat. in U. S. Teasel; Wild, Common or Card 

 Teasel, Card Thistle, Indian Thistle, Church-brooms, Gypsy- 

 combs, Hutton-weed, Prickly-bark, Pricky-bark, Shepherd' s- 

 stafi". Tassel, Venus' -bath, Venus'-cup, Wood-brooms. Moot 

 diuretic, diaphoretic, stomachic. 



687. DIPTEROCARPUS, Gaertn. Dipterocarpaceae. 



From Greek, "two- winged fruit". Resinous trees with 

 leathery leaves. About 45 species, south eastern Asia and East 

 Indies. 



a. D, aldtus Roxb., (b) D. incauus Roxb. (D. costatus Gaertn.), 

 (c) D. turbin^tus Gaertn. (D. laevis Hamilton), and other 

 species of India and the East Indies, yield the oleoresin called 

 Gurjun balsam or Wood oil, Balsamum ptcrocarpi, Balsamum 

 Gurjun (s. gurjunicum), resembling copaiba, especially useful 

 in treating leprosy. 



