THUJA 



THUNBERGIA 



3337 



compact, globose shrub, golden yellow in spring, chang- 

 ing to bright green. G.W. 1, p. 299. Var. aurea con- 

 spicua, Hort. More erect, the intense golden foliage 

 partially suffused with green. Var. aurea nana, Hort. 

 Golden" yellow foliage and very dwarf and compact 

 habit. Var. a&reo-variegata, Hort. Of pyramidal 

 habit : branchlets variegated with yellow. Var. bever- 

 leyensis (Thuja beverleyensis, Hort.). A columnar form 

 with the tips of the branchlets golden yellow. Var. 

 decussata, Beissn. & Hochst. (Reiinisporajunipermdes, 

 Carr. Chamsecyparis decussata, Hort.). Fig. 3369. 

 Dwarf globose form: Ivs. linear-lanceolate, spreading, 

 stiff, acute, bluish green. A juvenile form; see, also, Reli~ 

 nispora. Var. elegantissima, Gord. Of low columnar 

 habit, bright yellow in spring, yellowish green after- 

 ward. Var. falcate, Lindl. Of dense pyramidal 

 growth, deep green, the horns of the strobiles curved 

 backward. Var. filifdrmis stricta, Hort. Round- 

 headed dwarf bush, with upright, thread-like branches. 

 Var. gracilis, Carr. Of pyramidal somewhat loose and 

 slender habit, with bright green foliage. Var. frene- 

 loides and var. nepalensis are hardly different from this. 

 Var. meldensis, Veitch. Of columnar pyramidal some- 

 what irregular growth : Ivs. acicular, bluish green, some- 

 times passing into the normal form. Intermediate 

 between the var. decussata and the tvce. Var. pendula, 

 Parl. (var. filifdrmis, 

 Henk. & Hochst. T. 

 pendula, Lamb. T. 

 filiformis, Lindl.). 

 Branches pendulous, 

 thread-like, sparingly 

 ramified, and with 

 the Ivs. wide apart 

 and acuminate. Var. 

 funiculata, Hort., and 

 var. intermedia, 

 Carr., are intermedi- 

 ate forms between 

 this variety and the 

 type. H.TJ. 4:70. 

 Var. pyramidalis, 

 Endl. Of pyramidal 

 habit, with bright 

 green foliage; one of 

 the tallest and hardi- 

 est varieties. Var. 

 semperaurescens, 

 Veitch. Dwarf, glo- 

 bose; the golden hue 

 of the foliage remains 

 throughput the whole 

 year. Var. Sieboldii, Endl. (var. japonica, Sieb. Var. 

 nana, Carr. Var. Zuccariniana, Veitch. Var. compdcta, 

 Beissn.). Globose compact low form, bright green. 



T. dolobrata, Linn.=Thujopsi3 dolobrata, 



A T L'Lj"pT\ T?T"TTT)ER 



THUJOPSIS (Greek, Thuja-like). Also spelled 

 Thuyopsis. Pinacese. Ornamental tree or shrub grown 

 chiefly for its handsome evergreen foliage and the formal 

 habit! 



A tree closely related to Thuja and chiefly distin- 

 guished by the broader much flattened branchlets and 

 by its conelets having 3-5 winged seeds under each 

 scale. Only one Japanese species. Its yellowish white 

 close and straight-grained wood is very durable and is 

 used in Japan in boat- and bridge-building. 



Thujopsis is one of the most beautiful Japanese coni- 

 fers and forms a pyramidal tree, in cultivation some- 

 times shrubby, with spreading branches, the branchlets 

 arranged in a frond-like fashion, much flattened and 

 clothed with scale-like glossy green foliage. It is well 

 adapted for planting as a single specimen on the lawn 

 wherever it can be grown successfully. It is hardy as 

 far north as Massachusetts, but usually suffers from 

 summer drought. It thrives best in a sheltered and 



3800. Thuja plicata. (X X) 



shaded position and in moist loamy soil, and seems to 

 grow to perfection only in cool and moist climates. 

 Propagation is by seeds, also by cuttings and by 

 grafting like thuja. Plants raised from cuttings usually 

 grow into bushy round-headed plants. Plants grafted 

 on thuja are said to be short-lived. Seedlings are there- 

 fore to be preferred. 



dolobrata, Sieb. & Zucc. (Thuja dolobrata, Linn.). 

 PjTamidal tree, attaining 50 ft., or sometimes shrubby: 

 branchlets irregularly whorled or scattered, horizontally 

 spreading and often nodding at the ends; branchlets 

 $-$4 in. broad: Ivs. glossy green above, marked with a 

 broad white band beneath, those of the upper and under 

 side obovate-oblong, obtuse, adnate except at the apex, 

 the lateral ones spreading, ovate-lanceolate and curved 

 (hatchet-shaped), obtusish: cone globose-ovoid, about 

 %in. long; scales 6-10, much thickened at the obtusely 

 pointed apex, the middle 

 ones fertile and with 3-5- 

 winged seeds under each 

 scale. Japan. S.Z. 2:119, 

 120. G.C. II. 18:556. Gn. 

 M. 2:23. G.Z. 25, p. 49. 

 F.E. 16:517. C.L.A.7:364. 

 S.I.F. 1:11. Var. altissima, 

 Ansorge. Vigorous and 

 of almost columnar habit. 

 Var. cristata, Ansorge. 

 Branches compact, very full 

 and somewhat crisped." Var. 

 nana, Sieb. & Zucc. (T. 

 teterirens, Lindl.). Dwarf 

 form, with more slender and 

 narrower branchlets of a 

 lighter green. Var. plicata, 

 Ansorge. Very vigorous 

 with heavy branches which 

 hang over and appear 

 folded. Var. variegate, For- 

 tune. Tips of branchlets 

 creamy white. Var. Hdndai, 

 Makmo(T. Hdndai, Henry) . 

 Tall tree, to 100 ft.: 

 branches more densely 

 ramified: Ivs. smaller and 

 whiter beneath: cone sub- 

 globose, with the scales not 

 thickened at the apex. This 

 is the more northern form 

 and probably hardier than 

 the type which has been 

 called var. australis by 

 Henry. Recently intro. and now growing at the Arnold 

 Arboretum. 



T. boreolis, Hort.=Chamsecyparis nootkatensis. T. Stdndishii, 



ALFRED REHDER. 



THUNBERGIA (after Karl Peter Thunberg, profes- 

 sor of botany at Upsala and successor to Rudbeck and 

 Linnaeus; died 1828). Acanthaceje. Mostly tall peren- 

 nial climbers producing flowers in great profusion; 

 greenhouse, and in the open far South. 



Leaves opposite: fls. blue, yellow, purple, or white, 

 solitary and axillary or in racemes; calyx annular and 

 scarcely lobed or toothed or 10-45-toothed, surrounded 

 by 2 large bracts which often inclose also the corolla- 

 tube; corolla trumpet-shaped, with a spreading limb, 

 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, 

 separate; anther-cells parallel, equal, mostly mucro- 

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

 loculed, each cell with 2 ovules (rarely only 1). The 

 Thunbergieae are distinguished by the contorted corolla, 

 the 4-seeded caps., and the globose seeds. About 75 

 species, in the tropics of the world, particularly in Afr. 



3801. Thuja Standisbii. (xJi) 



