THUNBERGIA 



sion: Ivs. opposite: fls. blue, yellow, purple or white. 

 olitary and axillary or in racemes; calyx annular aii.l 

 carcely lobed or toothed or 10-lo-toothed, surroundi .1 

 by 2 large bracts which often inclose also the corolhi- 

 tube; corolla trumpet - shaped, with a spreading liml.. 

 tube curved or oblique, often compressed, enlarged 

 toward the mouth; stamens 4, didynamous, fixed near 

 the base of the tube, filaments thickened at the base. 



THUNBERGIA 



1799 



■ts into growth after the 

 niii!; winter. These pro- 

 wiiiLC autumn, but bloom 

 .K a rule, the plants flower 

 but tliis may be made to 



2500. ThunbergiaalataCXJ^). 



separate; anther-cells parallel, equal, mostly mucronate 

 at the base: ovary seated on a fleshy disk, 2-loculed. 

 each cell with 2 ovules (rarely only one). The Thun- 

 bergiese are distinguished by the contorted corolla, the 

 4-seeded capsule, and th^ globo.se seeds. 



The Thunbergias are nearly all vigorous greenhouse 

 climbers resomhlinc allamanrt:\s in habit. In large con- 

 servatnrir- -.vtH-r'- t!i.-v nrc ii'>t '■rnini">'l for room they 

 flower fr.-' I .1...:',. ,!:.■::' ti ■, .,, the best ad- 

 vantage. - :.i ,1 I , I I ! .--iiry In small 



Kreenli.iii- i i^. , . ilnwers. The 



biri,'f-r v;,. / .'.,:... /■...;.... /. ij rand t flora. 



r M,, , , . ;ni.l T.fim-infa are rapid growers, re- 

 i.f feeding and root-room. All do better 

 iliaii in pots. They may be propagated 

 , iiliri- I:. .1,1 -., r,ls or by cuttings which are taken from 



plants have been rut 

 duce few flowers th 

 freely the second sea- 

 in late summer or at 

 vary according to treatment in some species. T. alata 

 and its varieties and T. fragraiis are often treated as 

 annual garden phints, flowering in late summer. T. 

 erecta and T. affiiiis when grown in pots form rather 

 compact shrubby plants. See Gn. 24, p. .fU; 30, p. 292: 

 47, p. 1.50. T. elegans of the trade cannot be accounted 

 for by the writer. Heineich Hasselbring. 



Thunbergias nnd o1Inmnn.l:.<-- nr" -rent fnv.rites in 



arbors, .small t tees, cM -' m • . , i n I: - ■ :■.■: :. ■ .liiiijs. 

 Of the blue-IM. kiiMN ■/■ . , -I and 



T. hnirifulhi, known t.. the trade as T. lff:rnsii. lias 

 nearly sky-blue Hs., of a deeper but brighter hue than 

 the preceding. It is a taller-growing and choicer plant, 

 and has 10 or more fls. in a raceme, while those of T. 

 grandiflora are solitary in the axils. T. frafirann is the 

 common white-fld. kind. The form cult, in Florida is 

 probably var. vestUa, as the blossoms are not fragrant. 

 T. alata is a general favorite. The fls. range from 

 buff and white to orange with a deep purplish brown 

 throat, the last form being the most popular. This spe- 

 cies is killed to the ground by sharp frost every winter 

 but sprouts vigorously the following s]>riiig. It also 

 comes tip from self-sown seed. This si,e.-ies grows 

 only 7 or 8 ft. high. All the Thunbergias mentioned 



! easily raised from cuttings or layers in sum- 



:-rei'tn is not a climber but has a somewhat 

 ,- IiaMt. It lias small, dark green Ivs. and 

 ■]. |iiii|.lisli Mue gloxinia-like fls. which are 

 he l.ase. riicve is a pure white variety of it. 

 all sumimr ami autumn. It is readily raised 

 ings during the rainy season. 



H. Neheling. 



INDEX. 



coccine.a, 9. Harrisii. 7. 



cjerule.i. t. intus-aWa, 2. 



Doddsii, 2. laurifolia. 7. 



, 7. t'ragra'iis, 3. Mysorensis, 8. 



:. Fryeri, 2. sulphurea. 2. 



granditlora, 6, 7. unicolor, 2. 



.\. Fls. axiUanj, soUlnrii. 



B. Z/i'.s-. eiilhf 1. afflnis 



BB. LVS. „,„,,lJ„rhl t.u,:li,;I. 



c. Pit'nih X H-,ii,i, ,1 2. alata 



CC. Pftlohs „.,t irunl.d. 



D. Ciilvr vf fls. nhite: corolla- 

 lobes truncate and sinuately 



toothed at the apex 3. fragrans 



DD. Color of fls. blue (white only 



E. Plant suhrrri-l 4. erecta 



EE. Plant ,-llmhi,ni. 



F. Throat, ■ni, rnih, ii.ilinc.'u chrysops 



FF. Thrmit of tin ,;.rnii,i irliite.i). grandiflora 

 AA. Fls. in terminal or ariUarij racemes 

 (see. also, T. grandiflora). 



B. Color of fls. blue 7. laurifolia 



BB. Color of fls. yellow 8. Mysorensis 



BBB. Color of fls. scarlet 9. coccinea 



1. afflnis, S. Moore. A rambling shrub. 10-12 ft. 

 high, smooth: branches 4-angled: Ivs. short-petioled, 

 elliptic, acute, entire: fls. 2 in. across, deep purple-blue, 

 with a yellow throat. Summer. Tropical Africa. B.M. 

 6975. G.C. III. 2:461. G.M. 32:291. -This plant is 

 closely allied to T. erecta, from which it differs by its 

 entire Ivs. and larger fls., which are about twice the 

 size of those of T. erecta. When grown in a pot the 

 plant forms a compact shrub, but when given more 

 room it is a rambling climber. 



2. alita, Boj. Fig. 2.')00. Stem square, climbing- 

 hairy: Ivs. opposite, triangular-ovate, hastate, repand- 

 toothed, rough-pubescent, tomentose beneath; petioles 

 winged, about as long as the Ivs.: fls. solitary, on 

 axillary peduncles; calyx very small, surrounded by 2 

 large inflated bracts; corolla-tube somewhat longerthan 

 the involucre, dark purple within; limb rotate, oblique, 

 of 5 rounded segments, buff or cream-colored. S.E. 

 Africa. B.M. 2591. P.M. 2:2. B. 5:238 (not good). 

 L.B.C. 11:1045. — A perennial climber which may also 

 be treated as an annual greenhouse plant. Usually 

 propagated by seeds. It is used either as greenhouse 

 climber or to grow on trellises outdoors. Outside 

 it flowers mostly in August, but by propagating at 

 various times they may be hail in blossom nearly the 

 whole year in the greenhouse. There are many varie- 

 ties, some of which have been described as species. 



Var. aiba, Paxt. (T. alata. var. alhiflf.ra. Hook.). 

 Fls. white, with ii l,la,-kisli .-enter. P.M. :i:28. B.M. 

 ::-,i:. Var. aurantlaca. Ktze. 17'. innmiDara . Paxt.l. 



FN. I.riu'ht onili-e. witll a .lark .-enter. Tie- hest of the 



^roii|.. l'..M. i;:2ri9. Sulivtir. Doddsii has variegate. 1 

 Ivs. I'.JI. 15:221. F.S. 4:41.-,. Var. B4keri, Hort. (T. 

 Bake ri or Backerli. Ib.rt.i. Fls. pure white. Var. 

 Frjeri, Hort. {T. Friirri. II..rt. 7'. alata, var. intns- 

 alha, B-OTt.). Pali- ..ran^'.-, with a white center. Var. 

 sulphdrea, Hort. Fls. snlfnr-y.ll.iw. Var. Ititea, Hort. 

 {T. aiata, var. unieolor, Hort.). Fls. entirely yellow. 



3. frigrans, Roxb. Stem slender, climbing: Ivs. 

 lanceolate to triangular-ovate, cordate or suh.-ordate, 

 mostly angularly toothed on each side of the base, 

 rough" on "both sides, petiolate: fls. white, axillary; 

 or.Tlla-tube narrow; limb spreading, I'A in. across, 

 l.ilies tninoate and repandly toothed at the end. Sum- 



