IET 



[774] 



TET 



HARDY ANNUALS., 



T. biflo'rus (two-flowered). . Yellow. July. 

 Barbary. 1818. 



conjuga' tux (twin-padded). . Purple. July. 



Monlpelier. 1759. 



purpu'rpus (purple). 1. Durk purple. July. 



Sicily. 1769- 



TETRAGO'NIA. New Zealand Spinach. 

 (From tetra, four, and gonia, an angta; 

 fruit four-angled. Nat. ord., Aizoons 

 [Tetragoniaceoe]. Linn., I2~lcosandria 

 %-Di-pentfigyn ia. ) 



See NEW ZEALAND SPINACH. 

 T. expu'nsn (stretched). Yellow. August. New 

 Zealand. 1772. Annual. 



TETRANE'MA. (From tetra, four, and 

 nema^a. filament ; four stamens instead of 

 five, as in Pentstemon, which it much re- 

 sembles. Nat. ord., Fif/wm-ts [Scrophu- 

 lariaceee]. Linn., ~L-Didynamia 1-An- 

 giospermia.') 



Stove herbaceous. Seed sown in a slight hot- 

 bed in March; cuttings of youtia: shools, a little 

 firm, in sandy scfcl, under a brll-glas-;. in April and 

 August ; santty loajB and leaf-mould. Winter 

 temp., 45 to 50. In summer the shelter of the 

 greenhouse or a warm place out of doors. 

 T. Mexica'na( Mexican). 1. Purple, white. June. 

 Mexico. 1843. 



TETRANTHE'RA. (From tetra, four, and 

 aner, anther ; four out of nine stamens 

 fertile. Nat. ord., Laurels [Lauracese]. 

 Linn., -Enneandria \-Monogy nia.) 



Cuttings of young shoots, nearly ripe, in sand, 

 under a bell-iriass, and the stove ones in bottom- 

 heat; fibry, sandy loam and turfy peat. Green- 

 house and stove temperatures. 



GREENHOUSE EVERGREENS. 

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

 April. N. Holland. 1824, 



Japa'nica (Japan). 3. White. Japan. 1843. 



STOVE EVERGREENS. 



T. sebi'fera (tallowy). 10. Yellow, green. May. 

 E. Ind. 1820. 



trine 1 rnia (three-nerved). 10. Yellow, green. 



May. Ceylon. 1921. 



TETRA'NTHUS. (From tetra, four, and 

 anthits, a flower; four-flowered. Nat. ord., 

 Composites [Asteracesej. Linn., 19-Syn- 

 genesia 2-SuperJlua.) 



Stove evergreen trailer. Division and cuttings ; 

 sandy loam and a little peat ; requires the stove 

 in winter. 



T. litora'lis (shore). . White. August. W. Ind. 

 1820. 



TETRAPE'LTIS. (From tetra, four, and 

 .pelte, a small shield; form of flower. 

 Nat. ord., Orchids [Orehidacese], Linn., 

 %Q-Gynandria 1-Monandria.) 



Stove orchid, grown in abasket. See ORCH-IDS. 

 Te.fr a' grans (sweet-scented). White. E. Ind. 

 1836. 



TETBA'PTERYS. (From tetra, four, and 

 pteron, a wing j the carpels four- winged. 



Nat. ord., Malpighiads [Malpighiacese]. 

 Linn., IQ-Decandria 3-Trigynia. Allied 

 to Hirsea.) 



Stove, evergreen, yellow-flowered climbers. For 

 culture, see MALPI'GHIA. 

 T. Acupulce'nsis (Acapulcan). Mav. Mexico. 1824. 



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



1826. 



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

 TETRATHE'CA. (From tetra, four, and 



theke, a cell ; anthers four-celled. Nat. 

 ord., Poreworts [Tremandracese]. Linn., 

 8-Octandria I-Monogynia.) 



Greenhouse, New Holland 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 ; fibry peat, a little 

 turfy loam, and a good portion of charcoal and 

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

 i-.n airy situation, but the pot saved from direct 

 .sun and heavy rains, or careless waterings. 

 T. ericeefn'lia (heath-leaved). 1. Rose. July. 1820. 



frlandulo'sa (glanded). 1. July. 1822. 



hirsu'ta (hairy). 2. Pink. March. 1843. 



ju'nr-ea (rushy). 2. July. 1803. 



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



pili'fertt (shaggy). 2. June. 



pilo'sa (shairgy). 1. July. 1823. 



ruhioi'des (ruhia-like). 1. July. 1825. 



rubrisefta (red- bristled). 2. Hose. July. 1834. 



A#/m/V(thyme-leaved). 1. July. 1824. 



vcrtirilltt'ta (whorled-/ea?>ed). 2. June. 1845. 



vimi'nea (twiggy). 2. July. 



TETRAZY'GIA. (From tetra, four, and 

 zyyos, a yoke ; the parts of the flower in 

 fours. Nat. ord., Melastomads [Melasto- 



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 fihry peat. Winter temp., 55 to 60; 

 summer, 65 to 85. 

 T. nngustifo'lia (narrow-leaved). 5. Mav. 1823. 



di'scotor (two-coloured-/ea/>ed). 5. May. 1793. 



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



tetra'ndra (four-stamened). 3. March. 1815. 



TETTIGONIA SPUMARIA of some ento- 

 mologists, and the Oercopis, Cicada, or 

 Aphrophorn spumaria of others, Froth in- 

 sect, 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; hut 

 it also infests the stems of pinks, carna- 

 tions, 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 character- 

 istic. About the end of July it sheds its 

 skin, leaving it in the froth, and comes 



