TEUCBIUM 



TEYSMAXNIA 



3325 



C. Fls. not in regular floral whorls, 



usually in a dense simple 



spike, sometimes somewhat 



whorled. 



D. Calyx with the upper teeth 



slightly broader than the lower. 7. canadense 

 DD. Calyx with the uppermost tooth 



much broader 8. hircanicum 



cc. Fls. in regular floral whorls. 



D. Floral whorls 2-6-fld.: small 

 shrubs or subshrubs erect or 

 procumbent at base. 



E. Lrs.crenateorincised-dentate. 4. Chamsedrys 

 EE. Lts. entire or acutely few- 

 toothed at apex 5. Marum 



DD. Floral whorls 2-fld. 



E. .Species perennial herbs. 6. Scorodonia 



EE. Species hoary shrubs 12. betonicum 



Section I. POLUJM. 



1. montanum, Linn. Low subshrub, prostrate, 

 hoary or pubescent : sts. much branched at base, sum- 

 mit shortly ascending or rarely suberect and 2-4 in. 

 high: Ivs. " oblong-linear, entire, base narrowed to a 

 very short petiole, beneath or both surfaces hoary: 

 floral whorls few, condensed into a terminal head, which 

 is hemispherical: fls. white becoming yellow; calyx 

 tubular-campanulate, glabrous or hoary, teeth lanceo- 

 late, subulate-acuminate. S. Eu. and Orient. 



2. Pdlium, Linn, Low canescent-tomentose, lanate 

 or rarely pilose-hispid shrubs, 2-6, rarely 12 in. high: 

 basal branches procumbent, ascending or rarely sub- 

 erect: Ivs. cuneate-oblong or linear, sessile, crenate, 

 margin revolute, upper surface very short-tomentose, 

 densely lanate or pilose, color, especially above, yellow- 

 ish hoary, golden or rarely green; floral Ivs. similar: 

 floral whorls few, 2-j6-fld., condensed in a globose or 

 oblong head, which is solitary or often several corym- 

 bosely glomerate: fls. white, yellow, or purple; calyx 

 tubular-campanulate; corolla small. Medit. region and 

 Orient. A decidedly variable species. Var. flavescens, 

 Benth. (T. aitreum, Schreb.), has broader Ivs., very 

 hairy heads and yellow tips to the branches. 



3. pyrenaicum, Linn. Perennial, repent or diffusely 

 much branched, villous, sterile branches whip-like, 

 fertile short-ascending: Ivs. petioled, rotundate, 4-8 

 lines diam., crenate, base truncate, rounded or cuneate, 

 both surfaces green and hirsute, especially near the 

 margins and nerves; floral Ivs. petioled, oblong-linear, 

 entire, acute: floral whorls few, condensed in a small 

 terminal head: fls. yellow (or white); calyx campanu- 

 late, teeth acuminate-;acute; corolla-lobes often pur- 

 plish at base. Mountains of S. W. Eu. 



Section II. CHAM.F.DRYS. 



4. Chamaedrys, Linn. Perennial or shrubby, 1-2 ft. 

 high, base decumbent, branching, pubescent or vil- 

 lous: Ivs. short-pet ioled, ovate or oblong, incised- 

 crenate, base cuneate, both surfaces green or canescent 

 beneath; floral Ivs. smaller and dentate: floral whorls 

 2-6-fld., the upper racemose: fls. red-purple or bright 

 rose, with red and white spots, ^in. long, rather showy; 

 calyx tubular-campanulate, teeth lanceolate, acumi- 

 nate. Eu. A good border plant for late summer 

 bloom. 



5. Marum, Linn. Shrub, low, very much branched, 

 and hoary: Ivs. small, ovate, 2-4 lines long, short- 

 petioled, entire or very rarely crenate, hoary beneath; 

 floral Ivs. smaller: floral whorls 2-4-fld., racemose, 

 subsecund, raceme 12 in. long, whorls approximate: 

 fls. purplish; calyx hirsute, tubular-campanulate; 

 corolla villous outside. Medit. region. A low green- 

 house shrubby plant similar in habit to Thymus vul- 

 garis. 



Section III. SCORODONIA. 



6. Scoroddnia, Linn. Erect, hispid perennial, 1-2 

 ft. high, pubescent or subglabrous: Ivs. ovate, 1-2 in. 



long, obtusely crenate, short-petioled, base rounded or 

 cordate, both surfaces green; floral Ivs. minute: raceme 

 somewhat branched, rather paniculate above: fls. yel- 

 low; calyx rather villous, broadly campanulate; corolla- 

 tube exserted, pubescent outside, the tube twice as 

 long as the calyx. Eu. and adventitious in E. N. Amer. 



Section IV. STACHTBOTHTS. 



7. canadense, Linn. Erect, perennial herb, 1-3 ft. 

 high, soft-pubescent or canescent: Ivs. ovate-lanceo- 

 late to oblong-ovate, 2-3 in. long, serrate, base rounded, 

 somewhat canescent beneath, short-petioled; floral Ivs. 

 bract-like, sessile, lanceolate: spikes 2-6 in. long, rather 

 lax, simple: fls. purple to cream-color; calyx short- 

 pedicelled, campanulate, hoary and somewhat villous; 

 corolla-lip elongated. Low ground, Maine to Brit. Col., 

 southwara to Pa., Ohio, Mo., New Mex., and Calif. 

 Useful for low grounds and moist borders. 



8. hircanicum, Linn.; also spelled hyrcanicum. Erect 

 perennial herb 1-2 ft. high, slightly branched, pubes- 

 cent: Ivs. ovate-cordate, 1-3 in. long, obtuse, coarsely 

 crenate, base deeply cordate, scarcely pubescent above, 

 softly somewhat canescent beneath; floral Ivs. as subu- 

 late bracts: spike simple, 3-8 in. long, dense: fls. purple 

 or red; calyx 2-lipped; corolla villous outside. Cau- 

 casus and Persia. 



Section V. TETJCRIS. 



9. bicolor, Smith. Dwarf, herbaceous, glabrous: Ivs. 

 ovate, oblong or lanceolate, about 1 in. long, obtuse, 

 entire or incised, both surfaces green; floral Ivs. usually 

 exceeding the fls.: peduncles axillary, 1-fld., short, 

 upper subracemose: fls. blue and white; calyx broadly 

 campanulatc, green, teeth broad-lanceolate, acute; 

 corolla-tube included. Peru and Chile. Offered in 

 Calif, at one time, but apparently not successful. 



10. orientate, Linn. Erect perennial herb, about 1 ft. 

 high, branched at base, green and glabrous or pubes- 

 cent, canescent: Ivs. 1-2-pinnatisect, lower lJ^-2 in. 

 long, segms. linear, entire or incised, both surfaces pale 

 or green; upper Ivs. smaller; floral Ivs. minute: pedun- 

 cles laxly racemose, irregularly 1-3-fld.; pedicels much 

 longer than floral Ivs.: fls. violet or blue; calyx cam- 

 panulate, teeth lanceolate; corolla 3 times longer than 

 calyx. Caucasus and Asia Minor. 



11. fruticans, Linn. Shrub 2-3 ft. high, divaricate 

 branching: Ivs. ovate, entire, obtuse, glabrous above, 

 white or reddish brown, tomentose beneath, petioled; 

 floral Ivs. similar, smaller: racemes terminal or lateral 

 on short branches, few-fld.; peduncles 1-fld., shorter 

 tb^m the calyx: fls. blue; calyx campanulate, tomen- 

 tose; corolla-lip twice longer than the calyx. Eu. 

 Recommended for dry places S. It has a long blooming 

 season. 



Section VI. TEUCRIOPSIS. 



12. betonicum, L'Her. Shrub 2-3 ft. high: branches 

 hoary-tomentose : Ivs. ovate-oblong, 1-1 ^ in. long, 

 rather long-petioled, hoary beneath or on both sides; 

 floral Ivs. usually lanceolate: floral whorls 2-fld., secund, 

 laxly racemose, raceme 3-6 in. long: fls. purple; calyx 

 campanulate; corolla-tube somewhat exserted, pubes- 

 cent outside, upper lobes of limb forming an obsolete 

 upper lip, lateral lobes small, oblong, lowest oblong, 

 concave. Madeira. R.H. 1912, p. 465. 



T. frutescens, Hort., is offered in the trade as a shrub for the 

 rockery, with downy foliage and heads of pale blue fls. ; not known 

 botanically; possibly it is an error for T. fruticans. 



F. TRACY HUBBARD. 



TEYSMANNIA (named for J. E. Teysmann). Pal- 

 mace&. Low unarmed palm, grown in the warmhouse: 

 caudex underground: Ivs. erect, elongate-rhomboid 

 obtuse, base acute, margin laciniate, divisions 2-cleft: 

 spadix rather short, branches divided at base, reflexed 

 above; spathes papery-leathery: fls. hermaphrodite, 



