1018 



DIPLADENIA 



DIPLARRHENA 



start climbing ahead of the others, and after they 

 show a flower-stem pinch the shoot immediately ahead 

 of the flower. This will encourage the belated breaks 

 to start and catch up to these leaders. When they have 

 all set flower, they may be trained evenly over a globe 

 trellis if they are desired for a specimen plant. By the 

 above treatment ninety-five open flowers, all at one 

 time, have been secured on a plant in a 12-inch pot. 

 Dipladenias are subject to mealy-bug, scale, thrips, 

 and red-spider. Fumigate with hydrocyanic gas 

 during the cold months, and syringe regularly and 

 thoroughly during the summer, and these pests will 

 give no trouble. (George F. Stewart.) 



A. Fls. white; throat yellow inside. 

 boliviensis, Hook. Plant everywhere glabrous: sts. 

 slender: Ivs. petioled, 2-3 % in. long, oblong, acumi- 

 nate, acute at base, 

 bright green and 

 glossy above, pale 

 beneath; stipules 

 none : racemes axil- 

 lary, 3-4-fld.; pedun- 

 cles much shorter 

 than the Ivs., about 

 as long as petioles 

 and pedicels; bracts 

 minute at the base of 

 the twisted pedicels; 

 calyx - lobes ovate, 

 acuminate, 3 lines 

 long; corolla almost 

 salver - shaped, tube 

 % and throat slender 

 and cylindrical, the 

 former ^in. long, the 

 latter twice as long 

 and half as broad 

 again; limb \Yi in. 

 across; lobes broadly 

 ovate, more acumi- 

 nate than in D. atro- 

 purpurea. Bolivia. B. 

 M. 5783. Gn. 44: 

 140. Gng. 7:342. 



AA. Fls. dark purple. 

 atropurpurea, DC. 



(D. Marie Henrietta, 



Hort.). Fig. 1274. 



Glabrous: Ivs. ovate- 

 acute, about 2 in. long, acute at the very base: racemes 

 axillary, 2-fld.; peduncles a little longer than the Ivs.; 

 pedicels twisted, bracted; calyx-lobes lanceolate-acumi- 

 nate, a little shorter than the pedicel, and a third as 

 long as the cylindrical part of the corolla (of which the 

 tube is about 2 in. long); corolla dark purple inside 

 and out, tube funnel-shaped above the middle; lobes 

 triangular, wavy, spreading, shorter than the dilated 

 part of the tube. Brazil. B.R. 29:27 (as Echites). 

 Gn. 44:488. I.H. 42:33. Gt. 43, p. 548. Var. Clarkei, 

 Hort. Lvs. rather small: fl. deep crimson shaded vel- 

 vet-black, about 2^4 in. across, the tube paler. Gn. W. 

 8:661. D. atropurpurea is a handsome species, but 

 considered to be a shy bloomer. 



AAA. Fls. rose; throat deep rose or purple within, whitish 



outside. 



splendens, DC. (Echites splendens, Hook.). Fig. 

 1275. St. glabrous, the branches terete: Ivs. subsessile, 

 48 in. long, elliptic-acuminate, cordate at the base, 

 wavy, pubescent, especially beneath, veins elevated, 

 numerous: racemes axillary, longer than the Ivs., 

 4-6-fld.; calyx-lobes red-tipped, awl-shaped, as long as 

 the cylindrical part of the corolla-tube, which is half 

 the length of the funnel-shaped portion; limb flat, 

 4 in. across, the lobes rotund, subacute, almost as long 



1275. Dipladenia splendens. ( X J) 



as the tube; corolla-tube 1^ in. long, white outside, 

 lobes rosy, throat deeper, almost purple. Brazil. B.M. 

 3976. F.S. 1:34 shows a yellow-throated form. Var. 

 profusa, Rod. (D. profusa, Hort.), has larger and 

 brighter rosy fls., lined with yellow inside, the outside 

 of the tube rosy except at the base, which is yellow. 

 J.H. III. 57:277. I.H. 30:491. Intro, by B. S. Wil- 

 liams. D. amdbilis, Hort., is said to be a hybrid of D. 

 crassinoda and D. splendens. Lvs. short-stalked, oblong, 

 acute: fls. rosy crimson, 4-5 in. across; corolla-lobes 

 very round and stiff. Gn. 51, p. 227. G. 12:89; 14:461. 

 I.H. 27:396, shows a 12-fld. raceme with exceptionally 

 bright red fls. 



AAAA. Fls. salmon-colored; throat yellow inside and out. 



urophylla, Hook. Glabrous erect bush, not a vine: 

 branches numerous, swollen at the joints: Ivs. ovate- 

 oblong, obtuse at the base, suddenly narrowed at the 

 apex into a narrow point %in. long: peduncles long, 

 drooping, flexuose; racemes axillary, 4-6-fld.; calyx- 

 segms. awl-shaped; corolla dull yellow outside, deeper 

 and brighter yellow within; tube cylindrical in lower 

 third, then swelling into an almost bell-shaped throat; 

 lobes of the limb salmon inclined to purple, acute. 

 Brazil. B.M. 4414. P.M. 16:66. F.S. 5:425. 



D. amasna, Moore. Free-flowering, with good foliage: Ivs. oblong- 

 acuminate: fls. pink tinted with rose; corolla-lobes rounded and 

 not reflexed. Of garden origin (D. splendens XD. amabilis); offered 

 abroad. F. 1868:73. G.6:391; 11:43. D. Brearleyana, Hprt. Lvs. 

 oblong, acute, dark green: fls. pink at first, changing to rich crim- 

 son, very large. Gn. 51, p. 226. F.W. 1875:161. G. 8:92; 12:703. 

 Probably a form of Odontadenia speciosa. D. carissima, Hort. 

 Fls. very large (about 5 in. diam.), delicate pink lined with bright 

 rose. Garden origin. G.Z. 27, p. 49. D. crassindda, DC. Glabrous: 

 st. much branched, with many nodes: Ivs. lanceolate, acute or 

 almost acuminate, acute at the base, shining and leathery on both 

 sides: racemes axillary, about 6-fld.; calyx-lobes lanceolate, acumi- 

 nate, a little shorter than the cylindrical part of the corolla-tube, 

 2 or 3 times shorter than the pedicel; corolla-tube bell-shaped 

 above the middle; lobes obovate-orbicular. Brazil. The above is 

 the original description by De Candolle, who adds that the Ivs. are 

 3-3 Yi in. long, %-l in. wide; petiole 2-3 lines long: stipules inter- 

 petiolar, with 4 short cuspidate teeth. The plant pictured in B.R. 

 30:64 was renamed D. Lindleyi by Lemaire chiefly for its pilose 

 st. and stellate-lobed stipules. Later authorities refer B.R. 30:64 

 to D. Martiana. F.S. 22:2310 may be the same plant as B.R. 

 30:64, but with variable Ivs. and stipules. The plant was prized for 

 its delicate colors, being white at first, then shot with soft rose like 

 a flame tulip, and finally a deep rose. Only 1 fl. in a raceme waa 

 open at a time, and each lasted 8 or 9 days; throat orange inside. 

 D. eximia, Hemsl. Very slender, twining, nearly glabrous, the st. 

 rose-red: Ivs. opposite, very short-stalked, 1-1 y&n. long, orbicular- 

 ovate to elliptic: fls. 6-8 in a cyme, 2}^-3 in. across, rose-colored, 

 the tube nearly 2 in. long, corolla-lobes orbicular and obtusely 

 cuspidate. Probably Brazil. B.M. 7720. D.flava, Hook. Fls. size 

 and color of common yellow allamanda; climbing: Ivs. opposite, 

 short-stalked, ovate to elliptic: fls. 4-6 in a lax cyme, yellow, the 

 tube very hairy on the outside and suddenly enlarged above. Colom- 

 bia. B.M. 4702. J.F. 4:373. See Urechites, to which this is prop- 

 erly referred. D. Hdrrisii, Hook. = Odontadenia speciosa. D. 

 hybrida. Lvs. large, stout, bright green: fls. flaming crimson-red. 

 Garden form. G. 32:647. D.illustris, DC. Glabrous or pubescent: 

 Ivs. oblong or rotund, obtuse or nearly acute, rounded or sub- 

 cordate at the base, many-nerved; stipules none; petiole short: 

 racemes terminal, 4-8-fld.; fls. rosy, throat yellow inside, purple at 

 the mouth; corolla-tube cylindrical to the middle, then funnel- 

 shaped; limb 3-3 Kin. across, lobes rosy, orbicular-ovate, obtuse. 

 Brazil. F.S. 3:256. Var. glabra, Muell. Arg. B.M. 7156. D. insig- 

 nis, Hort. Stout-growing: foliage strong: fls. rosy purple. Of garden 

 origin. R.H. 1904, p. 419. G.Z. 16:145. D. pastdrum, Mart., var. 

 tenuifdlia, Hook. f. A very slender tuberous-rooted glabrous twin- 

 ing herb with very narrow (Kin- or less broad) Ivs. 2-3 in. long, 

 and rose-colored fls. 1 K in. across and bearing a golden 5-clef t ring 

 at the throat. Brazil. B.M. 7725. D. Sdnderi, Hemsl., has flesh- 

 colored, fls. with throat yellow inside, and outside at the base, has 

 smaller Ivs. than D. illustris, and no circle of purple at the mouth 

 of the fl. Gn. 51:226. WlLHELM MlLLER. 



L. H. B.f 



DIPLARRHENA (Greek, two anthers; the third being 

 imperfect). Iridacese. Tender rhizomatous plants from 

 Australia and Tasmania, with white and variegated 

 flowers. Herbs: rhizome short: sts. erect, simple or 

 somewhat branched: Ivs. mostly radical, narrow, rigid, 

 acuminate, equitant: spathe terminal, rigid, acumi- 

 nate; perianth without any tube above the ovary; 

 segms. unequal, inner ones shorter, connivent; upper 

 stamen imperfect; fls. usually more than 1 to a spathe, 

 not lasting. 



