DIOSPYROS 



6Mrj77if). — Var. cost4ta, Mast. Fr. large, depressed, 

 globular, orange-red, with 4 furrows. R.H. 1870:-tl0. 

 G.C. 11.4:777; III. 9:171 ; 13:51. Gu. 49, p. 171. Var. 

 Maz^li, Mouillef. Fr. orange-yellow, with 8 furrows. 

 B.H. 1874:70. Other varieties are figured in R.H. 

 1872, p. 254; 1878:470; 1887; 348; 1888:60, and A.G. 

 12:331-8,459-62. A very desirable and beautiful fruit- 

 bearing tree for the southern states, where a number of 

 different varieties introduced from Jap. are cultivated, 

 but the hardier varieties from the north of Jap. and 

 China, which are likely to be hardy north to New England , 

 seem hitherto not to have been introduced. Pig. 715 is 

 from Georgeson's articles in A.G. 1891. 



AA. Lvs. small, obtuse or emarginate : corolla and 

 calyx 5-lobed. 



Texina, Scheele {£>. Mexicitna, Scheele MS.). Small 

 tree, intricately branched, rarely to 40 ft.: lvs. cuneate, 

 oblong or obovate, pubescent below, 1-2 in. long: fls. 

 with the lvs., pubescent, on branches of the previous 

 year, staminate with 16 stamens, pistillate with 4 pu- 

 bescent styles, connate at the base: fr. black, %-l iu. 

 in diam. Spring. Tex., N. Mex. .S.S. 6:254. 



D. Ebtnum, Koeuig. Tree, to 50 ft.: lvs. elliptic-oblong, 

 bluntly acuminate, glabrous: fls. white, staminate, in short ra- 

 cemes. E. Ind., Ceylon. For cult, in hothouses or tropical cli- 

 mates. This species is said to yield the best ebony. 



Alfred Rehder. 



DIPLADENIA 



489 



DIFCASI (meaning uncertain). LiliAcece. Tender 

 bulbous plants of minor importance, allied to Galtonia, 

 with radical, thickish, narrowly linear lvs. and loose 

 racemes of odd-colored fls. on leafless scapes. About 20 

 species in southern Europe, tropical and south Africa 

 and India. During the winter, their resting time, the 

 bulbs should be kept dry. A compost of light, sandy 

 loam and leaf-mold has been recommended. Latest mon- 

 ograph in Latin, 1871, bv J. G. Baker, in Journ. Linn. 

 Soc. 11:395: the South African species in English by 

 Baker, in Flora Capensis, vol. 6 (1896-7). 



A. All perianth-segments equally loni/. {Trieharis.) 



Berbtinum, Medic. Lvs. 5-6, fleshy-herbaceous, gla- 

 brous, narrowly linear, 6-12 in. long, 2-3 lines wide near 

 the base, channeled on the face: scape 4-12 in. long: ra- 

 ceme loose, 4-12-fld.: bracts lanceolate, 4-G lines long, 

 longer than the pedicels: perianth greenish brown, ,5-0 

 lines long: ovary sessile or subsessile. S. Eu., N. Afr. 

 B.M. 859. 



AA. Outer peririiilli-.ieyiiteufs longer tliaii llie inner and 

 tailed, 



filamentdsum. Medic. {Z>, vlride, Mcsucb). Lvs. 5-6, 

 fleshy-herbaceous, narrowly linear, glabrous, 1 ft. long, 

 lJ^-3 lines wide near the base ; scape 1-2 ft. high: 

 raceme loose, 6-15-fld. : bracts linear-acuminate. 4-6 lines 

 long: perianth green, 12-15 lines long, outer segments 

 4-6 lines longer than the inner: capsule sessile. S. Afr. 



W. M. 

 •DIPHYLLfilA (Greek, double leaf). Berberid&cece- 

 Umbrella Leaf. An interesting hardy perennial herb 

 with thick, creeping, jointed, knotty rootstocks, send- 

 ing up each either a huge peltate, cut-lobed, umbrella- 

 like, radical leaf on a stout stalk, or a flowering stem 

 bearing two similar (but smaller and more 2-cleft) alter- 

 nate lvs., which are peltate near one margin, and a 

 terminal cyme of white fls. : sepals 6, fugacious : petals 

 and stamens 6 : ovules 5 or 6 : berries globose, few- 

 seeded. This is one of many genera having only 2 spe- 

 cies, one of which is found in N. E. North America, the 

 other iu Japan. There is a wonderful similarity between 

 the floras of these 2 regions, and few areas have pro- 

 duced so many plants esteemed in cultivation. 



cymosa, Michs. Root-lvs. 1-2 ft. across, 2-cleft, each 

 division 5-7-lobed; lobes toothed: berries blue. May. 

 Wet or springy places iu Alleghanies from Va. south. 

 B.M. 1666. -Int. into general trade by H, P. Kelsey. 

 Grows readily iu dry soil under cultivation, but is dwarf. 



DIFLA1)£NIA (Greek, double gland, referring to the 

 two glands of the ovary, which distinguish this genus 

 from Echites). Apocyndcea'. A 

 charming genus of coolhouse twiners, 

 mostly from Brazil, with large, showy 

 more or less funnel-shaped fls. having 

 a remarkable range of color, rarely 

 ~\ white or dark red, but especially rich 



. m rosy shades and with throats often 



1 rilliantly colored with yellow. The 

 i uds, too, are charming. The genus is 

 '* fully as interesting as AUamanda, 



'^ J \hich belongs to another tribe of the 

 ^ j ^ime order. Other allied genera of 

 ^^' 1 _,reat garden interest are Echites, 

 "y. I < >ntadenia, Mandevilla and Urechites. 

 *■ Some species are naturally erect 

 \ ushes, at least when young, and 

 many can be trained to the bush 

 '^ J foim. The group is a most tempting 



one to the hybridizer. An all-yellow- 

 flowered kind is desirable. Many names 

 appear iu European catalogues, but 

 they are badly mixed, as the genus 

 greatly needs a complete botanical re- 

 vision. Very many pictures are found 

 in the European horticultural periodi- 

 cals. Several prizes for American seed- 

 lings have been taken at Boston, by Geo. 

 McWilliam, Whitinsville, Mass., who 

 has given a full account of his cultural 

 methods in Gardening, 5:18 (1896). 

 W. M. 

 Although Dipladenias are natives of the tropics, they 

 grow at high altitudes, and it is a mistake to keep them 

 in close, steaming hothouses, as many gardeners do in 

 the Old World. The writer has kept them in a house 

 whose temperature was never above 50° F., and fre- 

 quently went down to 40° on winter nights. Cuttings 

 should be rooted in winter, and the young plants planted 

 outdoors during the summer, being careful not to bury 

 the crowns deep iu the soil. They can endure 5 degrees 

 of frost without losing their foliage, but even after 7 

 degrees of frost and complete loss of foliage, the plants 

 have been lifted, brought into the greenhouse, and 

 flowered with success. A good specimen will have 

 50-80 open fls. at one time. Tufts of fern root are ex- 

 cellent for potting soil, with some sharp sand added. A 

 fine specimen may be grown in a pan 2 ft. across and 

 9 in. deep. Plants never need shading. In late fall, as 

 the nights getcooler, the water supply maybe gr.adually 

 reduced until the middle of November, when water is 



