Tetragonotheca 



( 386 ) 



Thalia 



rosy pur. (*;/. Brassa- 

 vola elegans). 

 serrulata, 3", spr., wh., 

 lip crim. pur. (st/n. 

 Leptotes serrulata). 



TETRAGONOTHECA. 



Hardy perennial herbs (prd. Composite;). Prop- 

 agation, by division or by seeds. Light and well- 

 manured soil. 



Principal Species : 



helianthoides. 2' to 3', Aug., yel. 



TETRAMICRA. 



Intermediate house epiphytal Orchids (ord. 

 Orchidaceic). Propagation, by division when 

 growth is starting. They thrive in small Teak 

 baskets, or on blocks of Tree Fern stem, with a 

 little sphagnum about the roots. 



Principal Species : 

 bicolor, 2", win., wh., lip 

 marked pur. (it/im. ser- 

 rulata aud Leptotes bi- 

 color). 

 rigida, iy, spr., gm., lip 



TETRANEMA. 



A pretty herbaceous stove perennial {ord. Scro- 

 phularineie). Propagation, by seeds or cuttings in 

 spring, in very sandy soil. Soil, sandy loam and 

 fibrous peat. 



Only Species : 



rnexicana, (>", Jo., whitish pur. Mexican Foxglove. 



TETRANTHUS. 



Stove evergreen trailers (ord. Composite). Prop- 

 agation, by cuttings or division in spring. Soil, 

 three parts sandy, fibrous loam and one part fibrous 

 peat. 



Principal Species : 



littoralis, 1", Aug., wh. 



TETRAPOGON. 



Hardy perennial Grasses {ord. Gramineaa). Prop- 

 agation, by seeds and division. Any ordinary 

 garden soil. 



Principal Species : 



villosus, 1', aut., yel. 



TETRAPTERIS. 



Stove evergreen climbers {ord. Malpighiacese). 

 Propagation, by cuttings of ripened growths in 

 summer, retaining the leaves, and inserting in sand 

 under a bell-glass. Soil, fibrous loam and sandy peat. 



Principal Species: 



acutifolia, 6', My., yel. inaequalis, 6', My., yel. 



discolor, 6', My., yel. (yn. citrifolia). 



TETRATHECA. 



Elegant, hard- wooded, greenhouse evergreens (ord. 

 Tremandrea 1 ). Propagation, by cuttings of the 

 side growths in sand, under a bell-glass. Great 

 care should be taken to prevent damping. Soil, 

 three parts fibrous peat and one part sandy loam, 

 with charcoal and sharp grit to ensure porosity. 



Principal Species : 



erioffifolia, 1', Jy., ro. (see 

 figure). 



juncea, 2', Jy., pur. 



pilosa, 1J', Jy., pur. 



fflandulosa, 1.;', Jy., pur. verticillata (now Platy- 

 hirsuta, '2', Moll., pk. theca galioides). 



TETRAZYGIA. 



Stove evergreens {nrd. Melastomacene). Prop- 

 agation, by cuttings of side growths getting firm, 

 in sand. Soil, sandy loam and fibrous peat. 



Tctrn mi- rin HI (si i' Varamea). 

 Tetrantliera (see Litsea). 

 Tetraprltii (see Otochilm). 



Principal Species : 



angustinora, 5', My., wh. 

 discolor, o', My., wh. 



ela'aguoides, 4', spr., pk. 

 or wh. 



TETTIGONIA. 



This generic title is sometimes used instead of 

 Cercopsis, Cicada, or Aphrophora for a species 

 named spumaria, an insect better known in gardens 

 us the Cuckoo Spit (which see) or Frog Hopper. 



TEUCRIUM. 



Hardy and greenhouse evergreens and herba- 

 ceous perennials (ord. Labiates). Propagation, by 

 division in spring for the herbaceous species, and 

 by cuttings for the evergreens. Ordinary, fertile 

 soil. 



TETKATHECA EKif.i:i'OLiA. 



Principal Species and Varieties : 



fruticans, 2' to 4', Jy., 



Aug., hdy. or hlf-hdy. 



shr., bl. 

 hircamum, U', Sep., 



hdy., pur. 

 Marum, 1', sum., hdy., 



reddish pur. 

 Scorodonia, 1', Je., hdy., 



yel. 



variegatum, varie- 



gated. 



TEYSMANNIA. 



Stove Palms (nrd. Palmip). Propagation, by im- 

 ported seeds. Soil, sound loam. The only species 

 is altifrons, 10', with large, entire leaves. 



THALIA. 



Greenhouse or stove evergreens (ord Scitaminea?). 

 Propagation, by division. Soil, rich, light loam. 

 Dcalbata is quite hardy at Kew. 



bicolor, 1', Jy., grh., pur. 



bl. (ayii. orchidoum). 

 cauadeuse, 2', Aug.,hdy., 



pur. 

 Cliumiedrys, 9", Jy., luly., 



pur. 

 foliis aureis, hdy., Ivs. 



yel. 

 flavum, 2', Aug., hdy. or 



grh., yel. 



Umbrella, Tree (MeHii .\:e<lnriirh um- 

 hriiriilifiirinis). 

 Tlialamia (see 1'liylloeladi/s). 



