THUNBERGIA 



THUNIA 



3339 



lobes truncate and repandly toothed at the end. Sum- 

 mer. India. 



Var. laevis, Clarke, is glabrous. B.M. 1881. L.B.C. 

 20:1913. G.C. III. 46:410. Var. vestita, Clarke, is 

 more hairy and the fls. are not fragrant. 



4. erecta, T. Anders. (Meyenia erecta, Benth.). 

 Shrub, 2-4 ft. high, with loose spreading branches, half- 

 erect: Ivs. opposite, petiolate, ovate or subrhomboid, 

 smooth, entire or sinuate-toothed: fls. solitary on axil- 

 lary peduncles; calyx cut into 12-14 short teeth, con- 

 cealed by the large bracts; corolla funnelform; tube 

 curved, deep yellow within; limb purple, 1^-2 in. 

 across, of 5 subrotund obcordate lobes. Trop. W. Afr. 

 B.M.5013. F.S. 11:1093. R.H. 1863:251. I.H. 3:99. 

 F. 1855:225. J.H. III. 28: 35; 49: 261; 54: 39. A green- 

 house shrub, producing fls. freely at almost any season. 

 Grows in the open in Fla. Not a climber. Var. alba, 

 Hort. Fls. white. Var. casrulea, Hort. Fls. large, 

 intense violet, with orange throat. 



5. natalensis, Hook. Plants erect, 2 ft. or more high, 

 shrubby at base, green above: sts. quadrangular, 

 mostly glabrous: Ivs. somewhat crowded, oppo- 

 site, sessile, ovate, acute or subacuminate, sinuate- 

 dentate, glabrous above, hairy on the veins beneath: 

 fls. large, pale blue, yellow in the throat, subhori- 

 zontal on erect peduncles which are shorter than 

 the Ivs.; tube of the corolla yellow, 2 in. long, curved 

 upward, limb of 5 broad spreading obcordate lobes; 

 calyx of 6 teeth. Natal. B.M. 5082. G.C. III. 

 37:162. Very near T. erecta, which has petiolate 

 Ivs. and a greater number of calvx-teeth (if con- 

 stant?). 



6. chryspps, Hook. St. climbing, slightly hairy: 

 Ivs. opposite, petiolate, ovate-cordate, angularly 

 toothed: peduncles axillary, solitary, 1-fld.: corolla 

 funnelform or campanulate; tube yellow, limb pur- 

 ple, bluish around the throat. Sierra Leone. B.M. 

 4119. F.S. 1:5. P.M. 11:221. F. 1844:193. Natu- - 

 rally a climber, but said to become somewhat erect 

 if grown in a coolhouse. 



7. grandiflora, Roxbg. Fig. 3803. St. tall, climb- 

 ing: Ivs. broadly ovate, angularly cordate and 

 toothed or lobed, somewhat roughened on both 

 sides, petiolate: fls. solitary or in short, stout 

 racemes in the If.-axils, bright blue, becoming 

 whitish in the throat; corolla -tube bell-shaped; 

 limb 3 in. across, of 5 large, spreading rounded 

 lobes. Bengal. B.M. 2366. P.M. 7:221. L.B.C. 

 4:324. B. 2:76. B.R. 495. Gn. 47:150. I.H. 

 42:32. G.C. III. 9:789. A very large perennial 

 greenhouse climber; flowers during the summer or 

 autumn. There is also a white-fld. variety. 



8. laurif&lia, Lindl. (T. Hdrrisii, Hook. T. grandi- 

 flora, Wall.). St. terete, smooth except the youngest, 

 twining: Ivs. long-petiolate, ovate-oblong to oblong- 

 lanceolate, acuminate, rounded at the base, smooth, 

 entire or slightly toothed: fls. 3 in. across, pale 

 blue, white or yellow in the throat, borne in axillary 

 whorls or in a raceme in which they are clustered or 

 whorled; corolla with a wide, oblique trumpet-shaped 

 tube and a large 5-lobed limb. India. B.M. 4985; 

 4998. F.S. 12:1275. Gn. 12, p. 420; 30:292 and p. 

 293. R.H. 1860, p. 342. J.H. III. 28:345; 45:131. 

 Gng. 3:295. G. 3:42, 43. G.W. 3, p. 45; 10, p. 180. 

 Perennial greenhouse climber, flowering profusely in 

 winter. Prop, by cuttings. 



9. mysorensis, T. Anders. (Hexacentris mysorensis, 

 Wight). Climbing shrub, with long, slender branches: 

 Ivs. opposite, petiolate, oblong-lanceolate, acuminate, 

 entire or somewhat distantly toothed: racemes long, 

 pendulous: fls. yellow, 2 in. across, the tube purple, 

 inclosed by the spathe-like bracts; limb 4-lobed, the 

 upper lip erect, concave, with reflexed side lobes, lower 

 lip of 3 subequal, spreading lobes. India. B.M. 4786. 



F.S. 8: 752. S.H.2,p. 130. G.C. 111.40:356. J.F.3:285. 

 G.W. 3, p. 187. A tall greenhouse climber which flow- 

 ers, according to treatment, at all seasons. 



Var. liitea, Hort. (Hexacentris lutea, Hort., Veitch. 

 G.C. 1854, p. 151, not T. lutea, T. Anders.), has the fls. 

 pure yellow; a variety with a crimson limb and yellow 

 tube is figured in Paxton's Flower Garden, 3:88. 



10. coccinea, Wall. (Hexacentris coccinea, Nees). A 

 very tall climber: st. much branched, 4-angled: Ivs. 

 short-petiolate, variously shaped, the lower broadly 

 ovate, with a hastate or cordate angled base, the upper 

 ovate, cordate, all angularly toothed or the upper 

 entire: fls. in terminal or axillary racemes, 1-3 ft. long; 

 bracts large, inflated, as long as the tube; limb scarlet, 

 of 5 reflexed emarginate lobes; throat orange. Autumn 

 and winter. India. B.M. 5124. L.B.C. 12:1195. 

 F.S. 23:2447-48. R.H. 1890, p. 197. G.W. 3, p. 44. 



11. elegans, Borzi. Resembles T. coccinea. The fls. 

 are said to vary from red to intense yellow. Known 

 only from plants in the Palermo Botanic Garden, to 

 which it is supposed to have been intro. from a nursery 



in S. France. 



T. Gibsonii, S. Moore. Sts. prostrate: 

 Ivs. about 1 in. long, triangular, glossy 

 above: peduncles axillary, erect, 3 in. 

 long: fls. solitary, about 1 J in. across, 

 yellow, each with a pair of inflated and 

 united crimson-stained bracts. British 

 E. Afr. B.M. 8604. T. primtilina, 

 HemsL Perennial, silky hairy at first: 



3803. Thunbergia grandiflora. ( X }>) 



lys, rhomboid ovate, 1}^-2J^ in, long, with 1 small lobe 911 each 

 side: fls. axillary, solitary, about 1 Yt in. across, resembling the 

 common primrose in shape and color. E. Trop. Afr. B.M. 7969, 

 T. VogeliAna, Benth. (Meyenia Vogeliana, Benth.;. Erect: Ivs. 

 large, ovate or oblong, dark green; fls. a"bout equaling those of T. 

 erecta, deep bluish violet with yellowish throat: handsome sum- 

 mer-flowering species. Fernando Po, Afr. B.M. 5389. 



HEINRICH HASSELBRING. 



THUNIA (Count Thun-Tetschen, who had an impor- 

 tant collection of orchids about the middle of the nine- 

 teenth century). Orchidacese. Tall plants with annual 

 leafy stems terminating in a raceme of showy flowers. 



Formerly united with Phaius, from which it differs by 

 the terminal infl.: sepals and petals similar, spreading; 

 labellum convolute over the column, spurred, orna- 

 mented with several crests consisting of lines of fleshy 

 hairs; pollinia 8: fls. subtended by large membranous 

 bracts. About 6 species in N. India, Burma, and in the 

 S. Himalaya region ascending to a height of 6,000 ft. 



