3342 



THYMUS 



THYSANOTUS 



glaucous; floral Ivs. ovate, with reyolute margins, hir- 

 tellous: heads dense, ovate: fls. white; calyx hirtellous, 

 upper lip 3-toothed to hardly the middle, margin re vo- 

 lute; lower lip with bristle-like teeth. Portugal. 



9. vill&sus, Linn. Subshrub, about 3 in. high: sts. 

 much branched, erect, pubescent: Ivs. narrow-linear, 

 acute, ciliate, fascicled at the axils; floral Ivs. broadly 

 ovate, acuminate, villous: floral whorls in an ovate- 

 globose spike: fls. purplish crimson; calyx villous, teeth 

 of upper lip short, ovate-lanceolate, of lower subulate. 

 Portugal. Some of the -material offered in the trade 

 under this name may be a form of T. Serpyllum. 



10. striatus, Vahl (T. Zygis, Sibth. & Smith, not 

 Linn.). Subshrub, about 3 in. high: branches woody, 

 procumbent; flowering branchlets erect, somewhat hir- 

 sute: Ivs. stiff, sessile, linear or subspatulate, glabrous, 

 more or less ciliate beneath; floral Ivs. broadly cordate- 

 ovate, striate and pubescent: fls. congested in a dense, 

 ovate head with the uppermost Ivs. forming an involu- 

 cre, white (purple?); calyx-teeth lanceolate; corolla- 

 tube rather included. 



11. capitatus, Hoffmgg. & Link (Coridoihymus capi- 

 tatus, Reichb. f.). Subshrub, 6 in. to about 1 ft. high: 

 branches stout and erect, sterile branches finally 

 spiny: Ivs. stiff, linear, very short, rather 3-sided: head 

 ovate, dense, cone-like: fls. rose; calyx compressed at 

 the margins, teeth ciliate; corolla-tube short-exserted. 

 Medit. region. Treated as a distinct genus, Cori- 

 dothymus capitatus, by Briquet in Engler & Prantl, 

 Pflanzenfamilien IV. 3a. 



T. c6rsicus, Pers.=Satureia Corsica. T. er ictus, Hort., is offered 

 in the trade as a small shrubby evergreen about 9-12 in. high, with 

 a rigid habit and clusters of rose or pale pink fls. T. ericsefdlius, 

 Roth=Micromeria varia, Benth. Subshrub, procumbent, pubescent 

 or villous: Ivs. sessile, lower ovate, upper lanceolate, somewhat 

 canescent beneath: fls. minute, sessile in a sessile or peduncled fas- 

 cicle; calyx usually purplish. Canary Isls. 



F. TRACY HTJBBARD. 



THYRSACANTHUS (Greek, thyrse and flower). 

 Acanthdcese. Erect, glabrous, pubescent or villous 

 herbs, which are adapted to the warmhpuse. Lvs. 

 opposite, entire, usually large: fls. red, fascicled at the 

 bract-axils, pedicelled; fascicles or cymes arranged in a 



terminal thyrsoid, 

 simple raceme or panic- 

 ulately branched; 

 calyx short, rather 5- 

 parted, segms. narrow, 

 acute or acuminate; 

 corolla -tube elongate, 

 straight or somewhat 

 incurved, limb some- 

 what 2-lipped, 4-cleft; 

 stamens 2, staminodia 

 2; disk rather thick: 

 caps, oblong; seeds 4 or 

 fewer by abortion. 

 About 23 species, Trop. 

 Amer. The oldest and 

 now accepted name of 

 the genus is Odonto- 

 nema. 



O. Schomburg- 



kianum, Kuntze (Thyr- 

 sacdnthus Schomburg- 

 kidnus, Nees. T. 

 rutilans, Planch.). Fig. 

 3805. A shrubby plant, 

 becoming 6 ft. high: 

 Ivs. oblong-lanceolate, 

 nearly sessile : racemes 

 8-10 in. or even 3 ft. 

 long from the upper 

 axils, slender, droop- 



3805. Odontonema (Thyrsacanthus) ing: fls. tubular, red, 

 Schomburgkianum. (XH) about 1^ in. long, 



pendulous. Dec.-March. Colombia. B.M.4851. R.H. 

 1852:160. Gn. 42, p. 482; 69, p. 209. F.S. 7:732. G. 

 20:177; 36:177. G.W. 4, p. 352; 11, p. 196. 



O. callislachyum, Kuntze (Thyrsacanthus callistachyus, Nees. 

 T. lilacinus, Lindl. Justicia lilacina, Hort.). Shrub, 2 ft. high: Ivs. 

 oblong, petioled, tomentose: fls. red; sepals pubescent, bristly- 

 acuminate; corolla glabrous. Mex. J.F. 2:165. 



F. TRACY HUBBARD. 



THYRSOPTERIS (Greek, bunch or raceme and fern; 

 the fructification is disposed in racemose bunches). 

 Polypodiacese. Tree-like fern: Ivs. decompound, the 

 fertile portions appearing like bunches of stipitate 

 acorn-cups, the sterile portions twice-pinnate and 

 then deeply pinnatisect. One species, Isl. Juan Fernan- 

 dez, T. elegans, Kunze. Tree fern about 15 ft. high: Ivs. 

 decompound, reaching a length of 5-6 ft., one-third of 

 which is naked; sterile portions bipinnate, with lan- 

 ceolate incised pinnules; fertile parts tripinnate, each 

 pinna becoming a raceme of stalked involucres: sori 

 globose; involucre cup-shaped. 



THYRSOSTACHYS (Greek, thyrse and spike). Gra- 

 minese, A genus of 2 species of arborescent bamboos 

 native to Upper Burma and Siam, which has been 

 referred to Rottboellia but is probably sufficiently 

 distinct. The st.-sheaths are long, thin and persistent, 

 with a long narrow blade. The Ivs. are small or moder- 

 ate-sized. T. siamensis, Gamble, is a tender, deciduous, 

 "giant bamboo," with very graceful tufted sts. 25-30 

 ft. high and 1^-3 in. thick: st.-sheaths waved and 

 truncate at the top, 9-11 x4^-8 in.; auricles short- 

 triangular: blade narrowly triangular: Ivs. small, nar- 

 row, linear, 3-^6 x H-%in. Siam. Once intro. in S. 

 Calif., but it did not persist. Probably not now in cult, 

 in this country outside test-grounds. 



THYSANOTUS (Greek, fringed and ear, alluding to 

 the 3 inner perianth-segms. which are fringed) . Liliaceae. 

 Perennials, suitable for the greenhouse. Rhizomes 

 sometimes very short, sometimes stout and horizontal: 

 Ivs. radical, grass-like, flat or terete: scapes leafless, 

 now erect and simple or paniculate above, now much 

 branched or in one species twining: fls. sometimes 

 densely fascicled, with 1 terminal fascicle or few at 

 the top of the scape, sometimes variously panicled; 

 perianth withering, persistent, segms. distinct, outer 

 narrow, margin entire, inner with a broad colored 

 margin, beautifully fimbriate-ciliate; stamens 6; ovary 

 sessile or short-stipitate, 3-celled: caps, globose or 

 ovoid. About 21 species, Austral., one of which is also 

 found in the Philippines and China. The difference in 

 the inner and outer stamens and the absence of the 

 latter in some species may not always be as constant 

 as it would appear at first sight. The following species 

 have been occasionally cult. They thrive in sandy 

 loam and may be increased by offsets. 



T. dich6tomus, R. Br. (T. intricatus, Lindl. T. tenuis, Lindl., not 

 Endl.). Rhizome thick; sts. very variable, sometimes erect, 

 branched, 1-2 ft. high, rarely almost twining: Ivs. radical, few, short: 

 fls. 1 or 2, rarely 3, in terminal umbels; perianth-segms. purple; 

 stamens 6. B.R. 24:50; 26:4. J.F. 4:402. T. junceus, R. Br. 

 Rhizome thick: sts. slender, loosely branched, erect or flexuous, 1-2 

 ft. high: Ivs. radical, few, narrow-linear, short: fls. 1-3, in terminal 

 umbels and sometimes 1 or 2 sessile along the lower branches; peri- 

 anth-segms. purple, 5-6 lines long; stamens 6. B.M. 2351. B.R 

 656. T. muUifldrus, R. Br. Rootstock densely tufted: Ivs. all radi- 

 cal, densely tufted, erect, rigid, much shorter than the scape: scapes 

 simple, 6-18 in. high, bearing a single terminal, many-fld. umbel or 

 rarely a second one lower down: perianth-segms. purple, the outer 

 very acute, inner rather shorter; stamens 3. Var. prolifer, Hort. (T. 

 proliferus, Lindl.), is a luxuriant form, with a large terminal umbel, 

 frequently a second rather lower down: the Ivs. sometimes exceeding 

 the scape. B.R. 24:8. F.S. 18:1911. T. tuberdsus, R. Br. (T. 

 elatior, R. Br. T. isantherus, Lindl., not R. Br.). Roots swollen 

 into tubers: Ivs. radical, not numerous, narrow-linear, as long as 

 the scape which is erect, rigid, terete and 6-12 in. (or more) high, 

 branching into a loose, irregularly dichotomous panicle, each branch 

 bearing a terminal 1-4-fld. umbel and sometimes a lateral sessile 

 one: perianth purple, sometimes 6-7 lines long; stamens 6. B.R. 



655 ' F. TRACY HUBBARD. 



