464 



HENDEESON'S HANDBOOK OF PLANTS 



TRI 



Tri'zis. From trixos, triple; alluding to the 

 three-celled, triangular capsule. Nat. Ord. 

 CompositcB. 



A genus of green-house plants of variable 

 habit, natives of Central and South America 

 and the West Indies. T. divaricata auricu- 

 lata und T. aenecioides are interesting plants 

 ■with white or yellowish-white flowers and 

 may be increased by cuttings or by seeds. 

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

 man for round ; the flowers are globular. Nat. 

 Ord. Ranunculacece. 



A genus of hardy, yellow- flowered, herba- 

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

 has flowers twice the size of the Buttercup, 

 of a pale greenish yellow color. T. EuropcEus, 

 a native of Great Britain, has much larger 

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

 Asiaticus, is an excellent plant for the her- 

 baceous border or rock garden. They are 

 generally increased by division or. by seeds, 

 which, however, rarely vegetate the first year, 

 but come up vigorously the following spring. 



Tropaeola'ceae. A genus now included as a 

 sub-order of Geraniacece. 



Tropaeo'lum. Nasturtium, Indian Cress. From 

 trapaion, a tropliy; the leaves resemble a 

 buckler, and the flowers an empty helmet. 

 Nat. Ord. Geraniacece. 



An extensive genus of hardy annuals and 

 green-house tuberous and herbaceous peren- 

 nials, all natives of tropical America. The 

 tuberous-rooted varieties are confined to Peru. 

 The well-known annual plants, called Nastur- 

 tiums, are common in every garden, and only 

 require sowing with the other hardy annuals 

 in spring. There were formerly only two kinds 

 of the annual Tropseolums, T. major and T. 

 minor, but since 1830 numerous varieties have 

 been raised. One, with very dark flowers, is 

 called T. minor atroaanguinewm, and another, 

 with dark stripes, is T. minor vemustum. The 

 tall-growing varieties are not easily sui'passed 

 for covering arbors or unsightly objects; 

 while the dwarf sorts are beautiful plants for 

 the mixed flower border or for placing in beds 

 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, there are several tender 

 species, most of which are kept in the green- 

 house. The best known of these is TropoBolum 

 trieolorwm, with flowers marked red, black and 

 yellow, which 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 

 should not be buried, but only placed on the 

 surface of the soil, so that the flbrous 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 

 afterward 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 



Substantially the same plan has been followed 

 in this country for many years and found to 

 succeed well. T. brachyceras may be treated 

 in the same manner, and it would probably 

 succeed with T. tuberosum, a species which it 

 is very difficult 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 considereil a green- 

 house plant, but it is now found 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 other 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 Paria quadrifolia. 



Truffle. Tuher ciharivm. A species of Fungus 

 found in various parts of Europe and much 

 esteemed as a rare 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 radicana. 



Trumpet Flower. A common name for vari- 

 ous large, trumpet-shaped flowers, as Datura, 

 Brugmxunaia, etc. 



Trumpet Honeysuckle. A common name for 

 Lonicera aempenxireha. 



Trumpet Leaf. The genus Sarracenia. 



Trumpet Lily. Lilium longijlorwm, also Bich- 

 ardia JElhiopica. 



Trumpet Weed. Eupatorium pwrpureum. 



Trumpets. Sarracenia flava. 



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

 the leaf of the Tulip tree. 



Tryma'lium. From trymalia, a perforation ; in 

 reference to the small holes at the top of the 

 capsule. Nat. Ord. Bhamnacece. 



A small genus of Australian green house 

 shrubs with the habit of Pomaderria, but with 

 smaller flowers. . T. odoratiasimu/m 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 AsiSi, one to 

 eastern and five to western North America. 

 All the species are closely allied, and were 

 formerly included under Abiea. T. Canaden- 

 aia, known better in cultivation as Abiea Can- 

 adenaia, is the well-known Hemlock Spruce, 

 one of the most beautiful and useful of our 

 native evergreens. T. Pdttoniana 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 



