TETRANTHUS 



TEUCRIUM 



Cuttings of young shoots, nearly ripe, in sand, under a 

 bell-glass, and the stove ones in bottom-heat ; fibrous, 

 sandy loam and turfy peat. Greenhouse and stove 

 temperatures. 



GREENHOUSE EVERGREENS. 



T. ape'tala (no-petaled). 8. Green, yellow. April. N. 



Holland. 1824. 



genicula'ta (jointed). See LITSEA GENICULATA. 

 japo'nica (Japan). See LITSEA JAPONICA. 

 launfo'lia (laurel- leaved) of Jacquin. See LITSEA 



SEBIFERA. 

 Lkuy'sii (Lhuys's). Japan. 1869. 



STOVE EVERGREENS. 



T. sebi'fera (tallowy). See LITSEA SEBIFERA. 

 trine'rvis (three- nerved). 10. Yellow, green. May. 

 Ceylon. 1821. 



TETRA'NTHTJS. (From tetra, four, and anthos, a 

 flower ; four-flowered. Nat. ord. Composites [Com- 

 posite]. Linn. ig-Syngenesia, 2-Superflua.) 



Stove evergreen trailer. Division and cuttings ; sandy 

 loam and a little peat ; requires the stove in winter. 

 T. Lltora'lis (shore). J. White. August. VV. Ind. 1820. 



TETRAPE LTIS. (From tetra, four, and pelte, a small 

 shield ; form of flower. Nat. ord. Orchids [Orchidacese]. 

 Linn. 2o-Gynandria t I'Monandria. Now referred to 

 Otochilus.) 

 T. fro,' grans (sweet-scented). See OTOCHILUS PORRECTUS. 



TETRAPO'GON. (From tetra, four, and pogon, a 

 beard ; the flowering glumes are bearded. Nat. ord. 

 Gramineae.) 



Hardy perennial grass. Seeds ; divisions. Ordinary 

 garden soU. 

 T. villo'sus (shaggy), i. Yellowish. N. Africa. 



TEIRA'PTERIS. (From tetra, four, and pteron, a 

 wing ; the carpels four-winged. Nat. ord. Malpightads 

 [Malpighiaceae]. Linn. lo-Decandria, ^-Trigynia. Allied 

 toHiraea.) 



Stove, evergreen, yellow-flowered climbers. For 

 culture, see MALPIGHIA. 



T. acapulce'nsis (Acapulcan). May. Mexico. 1824. 

 acutifo'lia (pointed-leaved). May. Cayenne. 1826. 

 citrifo'lia. (citron-leaved) of Swartz. See T. IN^VALI- 



FOLIA. 



di'scolor (two-coloured). May. Guiana. 1827. 

 ituzqualifo'lia (unequal-leaved). Yellow. May. 

 Trop. Amer. 1818. 



TETRATHE'CA. (From telra, four, and theke, a cell ; 

 anthers four-celled. Nat. ord. Porenorts [Tremandraceae]. 

 Linn. 8-Octandria, \~Monogynia.) 



Greenhouse.Australian evergreens, and purple-flowered, 

 where not otherwise specified. Cuttings of young shoots, 

 the side ones are the best, in sand, under a bell-glass, 

 and great care taken to prevent damping ; fibrous peat, 

 a little turfy loam, and a good portion of charcoal and 

 broken pots. Winter temp., 43 to 50 ; summer, an 

 airy situation, but the pot saved from direct sun and 

 heavy rains, or careless waterings. 

 T. cilia' ta (eyelashed). Pink. 



encafo'lia (heath- leaved), r. Rose. July. 1820. 



ericoi'des (heath- like). See T. PILOSA. 



glandulo'sa (glanded). r. July. 1822. 



hirsu'ta (hairy). 2. Pink. March. 1834. 



ju'ncea (rushy). 2. July. 1803. 



nu'da (naked). 2. Crimson. May. 1843. 



pili'fera (shaggy). 2. June. 



pilo'sa (shaggy), i. July. 1823. 



rubioi'des (Rubia-like). See T. ERIC^FOLIA. 



rubrise'ta (red-bristled). See T. HIRSUTA. 



thymifo'lia (thyme-leaved), i. July. 1824. 



verticilla'ta (vihotled-leaved). See PLATYTHECA GALI- 

 OIDES. 



vimi'nea (twiggy). 2. July. 



TETRAZY'GIA. (From tetra, four, and zugos, a yoke ; 

 the parts of the flower in fours. Nat. ord. Alelastomads 

 [Melastomaceae]. Linn. 8-Octandria, i-Monogynia.) 



Stove, white-flowered evergreens, from the West Indies. 

 Cuttings of side-shoots, getting firm, in sand, under a 



bell-glass, in heat ; sandy loam and fibrous peat. Winter 



temp., 55 to 60 ; summer, 65" to 85. 



T. a'lbicans (whitish). 10. White. Mexico. 1815. 



angustifo'lia (narrow-leaved). 5. May. 1823. 



di'scolor (tvfo-co\ouied-leave4). 5. May. 1793. 



elceagnoi'des (Elaeagnus-like). 4. March. 



te<ra'ndra(four-stamened). SeeMicoNiATETRANDRA. 



TETTIGO'NIA SPUMA'EIA of some entomologists, and 

 the Cercopis, Cicada, or Aphrophora spumaria of others, 

 Froth insect, Cuckoo-spit, Froth-hopper, or Frog-hopper. 

 Its larva enveloped in its froth is especially prevalent 

 upon the young shoots of the white-thorn or quick ; but 

 it also infests the stems of pinks, carnations, lilacs, and 

 many other plants. If the froth be removed, one and 

 sometimes two small, pale green, aphis-like insects are 

 detected. These are the larva or young of the Froth- 

 fly. By means of its sharp rostrum or beak it extracts 

 the sap of the plant, and voids it as an excrement in 

 the frothy form, which is its characteristic. About the 

 end of July it sheds its skin, leaving it in the froth, and 

 comes forth the perfect insect. About the beginning of 

 August the males and females may be found in pairs 

 numerously on the plants they frequent. They are of 

 a dirty-white colour, thickly dotted and clothed with 

 short hairs ; head broad and bluntly triangular, with 

 black lines down its centre and sides ; eyes, one on each 

 side, near the base of the head ; rostrum long, bent 

 underneath its body when not in use ; antennas ending 

 in a fine bristle ; thorax and shield (scutellum), adjoining 

 the back of the head, brownish. The wing-cases are 

 brown, mottled with ochre, with four whitish patches 

 on the margin ; the under wings are transparent and 

 iridescent. The tegs, six in number, short, but two 

 hind-legs longest, and formed for leaping. So effectual 

 are they for the purpose, that, as Mr. Kirby states, after 

 showing their mode of leaping, they will spring five or 

 six feet at a time, being more than 250 times their own 

 length, or " as if a man of ordinary height should be 

 able to vault through the air to the distance of a quarter 

 of a mile." It is not ascertained where the eggs of this 

 insect are deposited, but probably on the stems of the 

 plants on the shoots of which the larva feeds. It appears, 

 however, that they can travel after hatching, for seed- 

 lings and plants raised from root-cuttings are often 

 affected. We know of no better plan for destroying the 

 insect than drawing the affected shoots between the 

 fingers, and then dipping these into a bowl of water 

 after each grasp. In the case of carnation stems and 

 other flowers, requiring more tender treatment, all the 

 froth may be taken from the insect by means of a piece 

 of sponge, and itself then removed by a camel's hair 

 brush. 



TEU'CRIUM. Germander. (Named after Teucer, a 

 Trojan prince, who first used it medicinally. Nat. ord. 

 Lipworts [Labiatae]. Linn. \\-Didynamia, i-Gymno- 

 spermia.) 



Annuals, seeds in the open ground in April; perennials, 

 by seeds and division ; shrubs, by cuttings in sandy soil, 

 under a bell-glass, in spring, and a hand-light in summer. 

 Most of them in the atmosphere of London, and farther 

 north, require a cold pit or a greenhouse in winter. In 

 dry places in the south of England they will frequently 

 stand our winters uninjured. They are not at all parti- 

 cular as to soil. 



HARDY EVERGREENS. 



T. angusti' ssimum (narrowest-teat ed). See T. FOLIUM. 

 ,, brcvifo'lium (short- leaved), i. Pink. June. Crete. 



1824. 



orienta'le (eastern), i. Blue. July. Levant. 1725. 

 Po'lium (poly), i. Pale. August. S.Europe. 1562. 



" Poly Germander." 

 anguslifo'lium (narrow- leaved). Purple. July. 



Spain. 1732. 

 flave'scens (yellowish). Yellow. July. S.Europe. 



I73i- 

 saxa'tile (rock). J. Pale yellow. July. Valentia. 



1820. 

 ,, Scorodo'nia (Scorodonia). r. Pale yellow. June. 



Europe (Britain). " Wood Sage." 

 ,, cri'spum (crisped). Leaves crisped. 1865. 

 thymifp'lium (thyme-leaved). J. Reddish. August. 



Spain. 1816. 



