EHI 



481 



EHO 



Rhizop6gon, Trinius. From rMza, a root, and 

 pogon, a beard. Linn. 24, Or. 9, Nat. Or. 

 Lycoperdacece. This species is found by the 

 waysides. Synonyms : 1, Lycopirdon gibbbswm 

 — albus 1. 



JRhodanthe, Lindley. From rhodon, a rose, 

 and antkos, a flower ; in allusion to the colour 

 of the flower-heads. Linn. 19, Or. 1, Nat. 

 Or. Asteraccce. These are some of the most de- 

 lightful annuals ever introduced to our collec- 

 tions. To obtain flowering plants in March, 

 the seed should be sown in August, in a com- 

 post of decayed leaf-soil and light maiden 

 earth, in equal parts, having the pots well 

 .drained. The seed-pots should not be placed 

 in a lower temperature than 60, nor ever higher 

 than 80 degrees. The earth should never be 

 allowed to become too dry, taking care to 

 apply water of a temperature nearly equal to 

 that of the house. They will require several 

 shifts previous to flowering ; at the two last, 

 viz., those in January and March, decayed 

 manure should be substituted for leaf-mould, 

 and a small portion of white sand added to 

 the compost ; a second sowing should be made 

 < in October and treated as the first, and they 

 will flower beautifully the following May ; and 

 if a final sowing is effected in March, the 

 plants will be ready to plant out in the flower- 

 garden in May or June, where they will flower 

 during the autumnal months. After the 

 plants raised from any of the sowings have 

 been potted, they should be removed to a 

 much cooler house, and when properly estab- 

 lished, placed on some elevated situation near 

 the glass. Seed should be obtained from the 

 plants grown in the greenhouse. 



1 atrosangulnea Red . . 6, G. A. 1J Axistralia 

 maculata . Koee . . 6, G. A. 1 Australia 

 Manglfcsii . . Bo. yeL . 6, G. A. 1£ S. River . 1832 



Rhodiola. See Sedum. 



Rh6dium LfGNUM. See Genista canari&nsis, 

 Gonvilvulus fl6ridus, and scoparia, and Physo- 

 calfimma florib&nda. 



BhodochIton, Zucc. See Lophospirmum. 



Rhododendron, Linn. From rhodon, a rose, 

 and dendron, a tree ; because of the appearance 

 of the terminal bunches of flowers. Linn. 10, 

 Or. 1, Nat. Or. Ericdteeas. The Rhododendron 

 is decidedly one of the finest of all known 

 genera, containing some, of the most hand- 

 some, elegant, and showy shrubs ; all of which 

 are admirably adapted either for ornamenting 

 the greenhouse or shrubbery, or for planting 

 singly on lawns. Peat soil is most suitable to 

 these plants, but they may also be grown in 

 very sandy loam, or vegetable mould. Propa- 

 gation may be effected by layers or seeds ; if 

 the latter mode be preferred, the seeds must 

 be sown early in- spring, in flat pans filled 

 with peat soil, and the seed covered very 

 slightly over ; the pans should then be set in 

 a close frame till the plants make their appear- 

 ance, taking care to water very slightly when 

 the soil appears dry. The seedlings having 

 attained to a sufficient height, so as to admit 

 of their being drawn without fear of injury, 



should be removed into other pots or pans, 

 using the same kind of mould. After this 

 removal they should be kept in a close frame 

 till fresh roots are produced, and they may 

 then, by degrees, be hardened to the air. The 

 small- wooded kinds may be also increased very 

 freely by young cuttings, planted in sand 

 under a glass. The tender kinds may be 

 easily propagated by young cuttings torn off 

 close to the stem, planted in sand, and plunged 

 in heat under a glass. Synonymes: 1, R. aro- 

 m&tictwm; 2, R. cinnamomewm ; 3, R. Album; 

 4, R. Russe.lia.nwm ; 5, R. NobUanum ; 6, R. 

 officinale; 7, R. azaleoideS; 8, R. myrtifblium; 

 9, R. oblHswm; 10, R. indicum Smithii, Azi.Ua 

 Indica Smithii; 11, R. Smithii; 12, Rhodbra 

 canadensis; 13, Vireya javdnica ; 14, R. for- 

 mosum; 15, R. camtschdticum, lancifdlium; 

 16, R. zeyldnicum ; 17, R. Grtffithsii ; 18, R. 

 Rbylei ; 19, Vireya dlba; 20, R. elcsagnoides, 

 obovhtum, salignum. 



