464 



HENDERSON'S HANDBOOK OF PLANTb 



TEI 



Tri'xis. From trixos, triple; alludiui? to the 

 three-celled, triangular capsule. Nat. Ord. 

 Co7nposita3. 



A genus of green-house plants of variaV)le 

 habit, natives of Central and South America 

 and the West Indies. T. divuricata auricu- 

 lata ;md T. senecioides are interesting plants 

 "with white or yellowish-Avhite flowers and 

 may be increased by cuttings or by seeds. 



Tro'llius. Globe Flower. From trol, the Ger- 

 man lor round ; the flowers are globular. Nat. 

 Ord. Ranunculacece. 



A genus of hardy, yellow- flowered, herba- 

 ceous plants. T. laxus, the only native species, 

 has llowers twice the size of the Buttercup, 

 of a pale greenish yellow color. T. EuropcBus, 

 a native of Great Britain, has much largi'r 

 flowers, and of a brighter color, and, with T. 

 Amaticiis, is an excellent plant for the her- 

 baceous border or rock garden. They aie 

 generally increased bj' division or by seeds, 

 which, however, rarelj' vegetate the first year, 

 but come up vigorously the following spring. 



Tropaeola'ceae. A genus now included as a 

 sub-order of Geruniucece. 



Tropaeo'kini. Nasturtium, Indian Cress. From 

 trapiiion, a trophy; tiie leaves resemble a 

 buckler, and the llowers an empty helmet. 

 Nat. Ord. Lieraniacece. 



An extensive genus of hardy annuals and 

 green-house tuberous and herbaceous peren- 

 nials, all natives of tropical America. The 

 tuberous-rooted varieties arc conlined to Peru. 

 The well-known annual plants, called Nastur- 

 tiums, are comm')n in every garden, and only 

 require sowing with the other hardy annuals 

 in spring. There W(>i-e formerly only two kinds 

 of the annual TropiDolums, T. major and T. 

 minor, but since 1830 numerous varieties have 

 been raised. One, with very dark flowers, is 

 called T. minor alro^anguineum, and another, 

 with dark stripes, is T. minor venustum. The 

 tali-growing varieties are not easily surpassed 

 for covering arbors or unsightly objects ; 

 while the dwarf sorts are beautiful plants for 

 the mixed flower bordtn* or for placing in b(>ds 

 by themselves ; they are exceedingly compact 

 and floriferous. As the double varieties do 

 not seed they must be increased by cuttings, 

 which root readily in sand. The young shoots 

 of these plants are succulent, and taste like 

 the common land Cress, the botanical name 

 of which is Nasturtium, and hence they have 

 received their popular name. Besides the 

 hardy annual kinds, thei'e are several tender 

 species, most of which are kept in the green- 

 house. The best known of these is Tropceolum 

 tricolorum, with flow^ers marked red, black and 

 yellow, wiiich has tuberous roots, and such 

 very weak and slender stems that it is found 

 necessary always to train them over a frame 

 or trellis, as they are quite unable to support 

 themselves. In Paxton's " Magazine of Bot- 

 any "it is stated that the tuber of the root 

 shoidd not be buried, but only placed on the 

 surface of the soil, so that the fibrous roots 

 may penetrate it. This, it is said, will en- 

 large the size of the tuber in " a truly aston- 

 ishing manner ;" and though the plants will 

 not appear healthy the first season, they will 

 aftei'ward become extremely vigorous. It is 

 also recommended to use double pots for these 

 plants, and fill up the interstices with river 

 sand, which should always be kept moist. 



TSU 



Substantiallj' the same plan has been followed 

 in this country for numy years and found to 

 succeed well. T. hrachi/cerfui may be treated 

 in the same manner, and it would probably 

 succeed with T. tuberoHtim, a species which it 

 is very diflicult to throw into flower under 

 ordinary treatment, but which grows best in 

 the open ground, in rich soil, and with plenty 

 of air and light. T. peregrinum, the Canary 

 Bird Flower, was formerly considered a green- 

 house plant, but it is now fouml much better 

 to treat it as a half-hardy annual, raising the 

 seeds on a hot-bed, and planting them out in 

 May near some trellis-work or otln'r support, 

 which the plant will soon cover in the most 

 graceful manner, producing hundreds of its 

 elegant fringe-like, pale-yellow flowers. Pro- 

 pagated by cuttings and by seeds. First 

 introduced in 1596. 



True Love. A local name for Paris quadrifolia. 



Truffle. Tuher ciharixim. A species of Fungus 

 found in various parts of Europe and much 

 esteemed as a rai'e dish. It grows under the 

 ground and was formerly sought after with 

 dogs trained for the purpose, but is now usu- 

 ally discovered by a particular species of fly 

 hovering over the place of its growth. It is 

 said that the Truffle has been found in the 

 State of New York. 



Trumpet Creeper. See Tecoma radicans. 



Trumpet Flow^er. A common name for vari- 

 ous large, trumpet-shaped flowers, as Datura, 

 Brugmansia, etc. 



Trumpet Honeysuckle. A common name for 

 Lonicera si iitpercirots. 



Trumpet Leaf. The genus Sarrucenia. 



Trumpet Lily. Lillum longijlorum, also Riclt/- 

 ardla yElliiopica. 



Trumpet "Weed. Eupatorium i^urpureum. 



Trumpets. Surracenia flara. 



Truncate. Blunt, as if cut off at the end; as 

 the leaf of the Tulip tree. 



Tryma'lium. From tnjmalia, a perforation ; in 

 reference to the small holes at the top of the 

 capsule. Nat. Ord. Rhamnacem. 



A small genus of Australian greenhouse 

 shrubs with the habit of Ponuulerris, but with 

 snudler flowers. T. odoratvisimum is well de- 

 serving a place in every collection of green- 

 house plants on account of its snow-white 

 flowers, which being produced in numerous, 

 loose, drooping panicles, render it a very 

 beautiful object when in blossom ; its flowers 

 are also deliciously fragrant. It thrives in a 

 compost of sandy loam and leaf-mould, and is 

 increased by cuttings. 



Tsu'ga. The Japanese name for these trees. 

 Nat. Ord. Coniferce. 



Of the eight species that compose this 

 genus, two belong to eastern Asia, one to 

 eastern and five to western North America. 

 All the species are closely allied, and were 

 formerly included under Abies. T. Canaden- 

 sis, known better in cultivation as Abies Can- 

 adensis, is the well-known Hemlock Spruce, 

 one of the most beautiful and useful of our 

 native evergreens. T. Pattoniana is found in 

 the highest timber regions of the Sierra Ne- 

 vada, where it forms a large tree. In a young 

 state it has the aspect of a Juniper, the leaves 



