3392 



TSUGA 



TULBAGHIA 



most commonly used in the E. for framing and clap- 

 boarding of buildings. It is not used for finishing 

 lumber. A number of garden forms have been raised; 

 the following are the most important: Var. albo-spica, 

 Nichols. Tips of the young branchlets creamy white. 

 Var. compacta, Sene'cl. (yar. compacta nana, Beissn.). 

 Dwarf conical pyramid with numerous short branchlets 

 clothed with small Ivs. Var. globosa, Beissn. (var. 

 globuldris erecta, Kunkler). Dense, globose, much- 

 branched form with numerous upright branches nod- 

 ding at the ends. Var. gracilis, Gord. (var. microphytta, 

 Hort.). Slow-growing form with slen- 

 der sparingly ramified branches, spread- 

 ing and more or less drooping at the 

 ends: Ivs. very small, about K m - long. 

 Var. nana, Carr. Dwarf and depressed 

 form with spreading branches and short 

 branchlets. Var. parvifdlia, Veitch. 

 Lvs. very small, J^in. l n g or shorter: branchlets stout, 

 closely set and numerous. Var. pendula, Parsons (var. 

 Sdrgentii pendula, Hort., var. Sargentidna, Kent). 

 Flat-topped form with spreading branches and drooping 

 branchlets. Gn. 32, p. 363; 39, p. 81. M.D.G. 1900 : 367, 

 368, 491. Very distinct and desirable form. 



5. heterophylla, Sarg. (T. Albertidna, Se'ne'cl. T. 

 Mertensiana, Carr.). Tree, attaining 200 ft., with short 

 slender, usually pendulous branches forming a rather 

 narrow pyramidal head in older, but rather broad in 

 young trees: young branchlets pale yellowish brown, 

 pubescent: Ivs. linear, obtuse or acutish, distinctly 

 grooved and dark green above, with 2 white lines below, 

 J^-%in. long: cones oblong-ovoid, sessile, %-l in. long; 

 scales oval, slightly puberulous outside. Alaska to 

 Calif., west to Mont. S.S. 10:605. G.C. III. 12:11. 

 Var. argenteo-variegata, Schneid. Tips of the young 

 branchlets white. 



6. Mertensiana, Sarg., not Carr. (T. Pattonidna, 

 Se'ne'cl. T. Hookeridna, Carr. T. Roezlii, Carr. Abies 

 Williamsonii, Newb. Hesperopeiice Pattonidna, 

 Lemm.). Fig. 3861. Tree, attaining 100 and occasion- 

 ally 150 ft., with slender pendent branches usually 

 forming an open pyramid: young branchlets light 

 reddish brown, pubescent, usually short and upright: 

 Ivs. spirally arranged around the branches, linear, 



usually curved, 

 acutish, mostly 

 rounded or keeled, 

 rarely slightly 

 grooved above, 

 light bluish green 

 or pale bluish 

 white, with whi- 

 tish lines on both 

 sides, J^-l in. 

 long: cones cylin- 

 dric-oblong, usu- 

 ally violet-purple 

 before maturity, 

 brown when ripe, 

 2-3 in. long; scales 

 obovate, puberu- 

 lous outside. Brit. 

 Col. to Calif., 

 west to Mont. S. 

 S. 10:606. G.C. 

 III. 12:10; 13: 

 659; 21:150, 151 

 (adapted in Fig. 

 3861).G.F.4:380; 

 10:6, 7. R. H. 

 1870, p. 21. Var. 

 argentea, Schneid. 

 Foliage bluish 

 white. G.W.14,p. 

 3861. Tsuga Mertensiana. (XK) 602. Var. Jeffreyi, 



Schneid. (T. Pattonidna var. Jeffreyi, Henry). Lvs. 

 greenish, flattened and grooved above. To avoid con- 

 fusion one has to bear in mind that T. heterophylla 

 was known for a long time as T. Mertensiana and still 

 bears this name in many gardens. 



T. chinensis, Pritz. Tree, to 120 ft.: branchlets yellowish gray, 

 pubescent: Ivs. }^-l in. long, rounded or emarginate at the apex, 

 green or nearly so beneath, entire, on young plants sparingly 



3860. A spray of hem- 

 lock spruce. Tsuga 

 canadensis. (Xl) 



toothed and with narrow white lines beneath : cones sessile, about 

 1 in. long, lustrous. Cent, and W. China. G.C. III. 39:236 (cones, 

 as T. yunnanensis). Has proved hardy at the Arnold Arboretum 

 and thrives well. T. dumosa, Sarg. (T. Brunoniana, Carr.). Tree, 

 to 120 ft. : Ivs. gradually tapering from the base, serrulate, acutish, 

 with broad silvery white lines beneath, %-l J^in. long: cone 1 in. 

 long. Himalayas. G.C. II. 26:73, 501. Tender. T. Fretzii= 

 Pseudotsuga taxifolia var. Fretzii.- T. yunnanensis. Mast. Tree, 

 to 150 ft.: branchlets with rufous-gray pubescence: Ivs. rounded 

 at the apex, entire, with white lines beneath, }^-l in. long: cones- 

 %-l in. long, dull, with fewer scales than T. chinensis. W. China. 

 G.C. III. 39:236 (excl. cones). Growing at the Arnold Arboretum, 

 and apparently quite hardy. ALFRED REHDER. 



TSUSIOPEtfLLUM (Tsusia, a subdivision of Rho- 

 dodendron, and Greek for leaf). Ericdcese. A low pros- 

 trate shrub, native of Japan, resembling small-lvd. rho- 

 dodendrons of the section Tsusutsi (Tsusia), like R. 

 Tschonoskii, but corolla tubular, regular, smaller, 

 anther-cells dehiscent with a longitudinal slit, ovary 3- 

 celled and the scales of the winter buds dropping from 

 the base. Recently intro. and probably as hardy as 

 Rhododendron Kaempferi. Cult, and prop, like other 

 alpine Ericaceae. T. Tanakae, Maxim. Low prostrate 

 shrub with setose branchlets: winter buds with the 

 outer scales longer than the inner ones: Ivs. obovate- 

 elliptic, acute and apiculate, setose above, glabrous and 

 glaucous below except the setaceous midrib, M~Min. 

 long: fls. 1-2, short-stalked, white or pinkish; calyx- 

 lobes ovate, obtuse; corolla scarcely %in. long, tubular 

 with short roundish spreading lobes, the tube pubescent 

 outside and inside; stamens not exceeding the tube, 

 style shorter than the stamens; ovary paleaceous-setose. 

 Cent. Japan. ALFRED REHDER. 



TUBEROSE: Polianthes. 



TULBAGHIA (Tulbagh, a Dutch governor at the 

 Cape of Good Hope, died 1771). Lilidcese. Perennial 

 herbs with a short thick woody sometimes corm-like 

 rhizome, usually grown in the greenhouse: Ivs. radical, 

 ligulate: scape simple, leafless: fls. in a terminal umbel, 

 numerous, pedicellate; perianth urn-shaped or almost 

 salver-shaped; lobes 6, subequal, spreading; crown 

 rather fleshy at the throat, shorter than the lobes; 

 stamens 6; ovary sessile, ovoid or subglobose, 3-celled: 

 caps, ovoid or oblong, loculicidally dehiscent. About 

 20 species, Trop. and S. Afr. Greenhouse subjects, 

 little cult.; prop, by seeds and offsets. 



Simmleri, Beauverd. Bulb ovoid: Ivs. lorate-lan- 

 ceolate, rather obtuse: scape much longer than the Ivs.: 

 fls. small, rose, segms. ovate-oblong; corona urn-shaped, 

 crenately 3-lobed. Transvaal. 



