3324 



TETRAPANAX 



TEUCRIUM 



the preference probably lies with placing it in Tetra- 

 panax. This genus, if accepted, differs from Fatsia in 

 its four-merous rather than mostly five-merous flowers, 

 with two-merous ovary, the tomentose-lanate char- 

 acter, and other features. T. papyriferum is an excel- 

 lent subtropical subject. 



Fatsia japonica, Decne. & Planch., remains in that 

 genus, as treated on page 1204. 



TETRASTIGMA (Greek, four and stigma, in refer- 

 ence to the 4-lobed or 4-parted stigma) . Vitacese. About 

 40 species in Trop. and Subtrpp. Asia of shrubs climb- 

 ing by tendrils: Ivs. alternate, digitate or pedate; Ifts. 

 3^-5, sometimes reduced to 1; tendrils with adhesive 

 disks or twining: fls. polygamo-dioecious, in axillary 

 cymes or umbels, 4-merous; petals spreading; disk 

 adnate to the base of the ovary; stigma sessile, 4-lobed 

 or 4-parted: berry 2-4-seeded; seeds ovoid-globose, sul- 

 cate on the inner surface. Allied to Cissus and Par- 

 thenocissus but easily distinguished by the sessile 

 4-lobed stigma and from the latter by the 4-merous fls. 

 Of the numerous species only the following are occa- 

 sionally cult.; T. obtectum and T. serrulatum are proba- 

 bly the hardiest, but tender in the N., and are graceful 

 small-lvd. vines which may be used where vines of more 

 delicate character are desired; the first species clings to 

 walls, the second has twining tendrils. T. Harmandii is 

 a tall-growing vine with larger Ivs. and edible berries, 

 suited only for tropical or subtropical countries. For 

 cult, and prop., see Cissus and Parthenocissus. T. 

 obtectum, Planch. (Cissus obtecta, Wall.)- Climbing with 

 disciferous tendrils: branchlets hirsute: Ivs. long-stalked, 

 persistent or subpersistent; petioles pubescent; Ifts. 

 5, digitate, sessile, cuneate-obovate to elliptic, acute, 

 remotely crenate-serrate with mucronate teeth, gla- 

 brous, or in var. pilosum, Gagnep., pubescent beneath, 

 K-1M in- long: fls. greenish, in slender-stalked umbels; 

 pedicels slender: berries ovoid, J^in. long. Himalayas, 

 Cent, and W. China. T. serrulatum, Planch. (Cissus 

 serrulate, Roxbg. Vltis capreoldta, Don) . Climbing with 

 twining tendrils, glabrous: Ifts. 5, pedate, sometimes 

 3, short-stalked, ovate or elliptic to elliptic-lanceo- 

 late, acute or acuminate, serrate, %-2% in. long: fls. in 

 compound cymes: fr. globose, black, J^in. thick or 

 slightly larger. Himalayas, W. China. T. Harmandii, 

 Planch. High climbing with twining tendrils: Ifts. 3-5, 

 short-stalked, narrowly lanceolate, serrate, glabrous, 

 about 2-3 in. long: fls. in axillary short-stalked cymes: 

 fr. globose, 2-3-seeded. Philippine Isls. Recently 

 intrp. by the Dept. of Agric.; said to have edible berries 

 similar to those of the Scuppernong grape. 



ALFRED REHDER. 



TETRATHECA (Greek, four and cell; the anthers 

 are sometimes four-celled). Tremandraceae. Slender 

 glabrous or stellate-pubescent, heath-like little shrubs, 

 grown in the greenhouse and out-of-doors in the 

 far South. 



Leaves alternate, verticillate or scattered, heath-like, 

 entire, flat and toothed or reduced to minute scales : fls. 

 4-5-merous; stamens apparently in a single series; disk 

 inconspicuous: caps, opening only at the edges. 

 About 20 species, all from Austral. In European green- 

 houses all the plants of this family are considered 

 difficult of cult. They are treated like many other 

 Australian heath-like plants, being potted in fibrous 

 peat and silver sand and watered carefully at all 

 times. It is said that only soft rain-water should be 

 used. 



A. Sts. terete, leafy. 

 B. Lvs. mostly verticillate. 



thymifdlia, Smith. Lvs. almost all verticillate in 3's 

 or 4's, ovate-elliptical or lanceolate: fls. purple; sepals 

 ovate-lanceolate, acute or acuminate, seldom reflexed; 

 ovary glabrous or more frequently pubescent, with 2 

 superposed ovules. B.M. 8028. 



ericifolia, Smith. Subshrub 1 ft. or less high, 

 branched, rough-pubescent or nearly glabrous, rarely 

 hirsute: Ivs. mostly verticillate, narrow-linear, margins 

 closely revolute, rarely oblong-lanceolate and more 

 open: fls. pink, on slender pedicels; sepals ovate, 

 obtuse, not reflexed; ovary glabrous or rarely pubescent 

 with 2 superposed ovules: caps, obovate-cuneate. R.B. 

 28:121. 



BB. Lvs. rarely somewhat verticillate. 



pilosa, Labill. Much branched, glabrous or hispid, 

 about 1-1 }/2 ft.high: Ivs. usually linear, margins much 

 revolute, 4-6 lines long: fls. purple, rather small; sepals 

 ovate, obtuse or acute; petals narrow; ovary glabrous or 

 pubescent, 1-ovuled: caps., obovate. F.S. 10:1065 (as 

 T. ericoides). Gn.W. 20:361. 



AA. Sts. very angular or flat, almost leafless. 

 hirsuta, Lindl. Sts. rather rigid and erect, 6-18 in. 

 high, minutely pubescent and often hispid with few 

 long spreading reddish hairs: Ivs. mostly alternate, 

 ovate-lanceolate to oblong-linear, obtuse, all less than 

 Y<ivh.. long: fls. rather large, pink, on slender pedicels; 

 sepals lanceolate; petals oblong, ovary glabrous or 

 slightly glandular, with 1 ovule in each cell. B.R. 

 30:67. J.H. III. 42:461. F . TRACY HUBBARD. 



TEUCRIUM (Teucer was the first king of Troy). 

 Labiatse. GERMANDER. Herbs, subshrubs, or shrubs, 

 some of which are greenhouse plants or outdoors in the 

 extreme South, others of them hardy in the North and 

 suitable for the wild-garden or rockwork. 



Leaves entire, dentate or incised, sometimes many- 

 cleft; floral Ivs. similar or reduced to bracts: floral 

 whorls 2-fld., rarely many-fld., arranged in racemose 

 spikes or terminal heads, rarely with the fls. in a ter- 

 minal spike or irregularly whorled; calyx tubular or 

 campanulate, rarely inflated, 10-nerved, 5-toothed; 

 corolla-tube included or rarely exserted, limb as if 1- 

 lipped, lower lip large, upper very small or split so as 

 to appear to be wanting; stamens 4, in 2 pairs, exserted 

 through the split notch in the short upper lip : nutlets 

 obovpid, reticulate, rugose. About 160 species, widely 

 distributed through the warmer and temperate regions 

 of the world. Monographed by Bentham in De Can- 

 dolle's Prodromus Systematis Naturalis, Vol. 12 (1848). 

 The specific descriptions in the present article are 

 largely based on this work but the sequence of sections 

 and species is according to Briquet in Engler and Prantl, 

 Pflanzenfamilien VI. 3a. 



The teucriums are little known in cultivation. They 

 probably present no special difficulties to the gardener. 



aureum, 2. 

 betonicum, 12. 

 bicolor, 9. 

 canadensf, 7. 

 Cbamsedrys, 4. 



INDEX. 



flavescens, 2. 

 fruticans, 11. 

 hircanicum, 8. 

 hyrcanicum, 8. 

 Marum, o. 



montanum, 1. 

 orientals, 10. 



Folium, 2. 

 pyrenaicum, 3. 

 Scorodonia, 6. 



KEY TO THE SPECIES. 



Folium 

 pyrenaicum 



A. Floral whorls condensed into a terminal 

 subglobose head. 



B. Lvs. entire 1. montanum 



BB. Lvs. crenate. 



c. Blades oblong or oblong-linear. ... 2. 



cc. Blades rotundate 3. 



AA. Floral whorls not condensed into a ter- 

 minal head. 

 B. Calyx erect. 



c. Lvs. entire or the lower somewhat 



dentate 11. fruticans 



cc. Lvs. incise-dentate or dissected. 

 D. Pedicels shorter than the floral 



Ivs 9. 



DD. Pedicels much longer than the 



floral Ivs 10. 



BB. Calyx declinate. 



bicolor 

 orientate 



