R 



RADERMACHIA (after J. C. M. Radermacher, 

 1757-83, a Dutch resident of Java, published a list 

 of Javanese plants). Also spelled Radermachera. 

 Bignaniaces!. Ornamental trees. 



Plants with large opposite, pinnate or bipinnate Ivs. 

 and large fls. in terminal panicles: calyx campanulate, 

 truncate or dentate; corolla campanulate, with 4 or 5 

 included stamens: caps, linear, loculicidal; septum 

 thick, spongy with the seeds 

 in shallow impressions. 

 Only two species seem to be 

 in cult.; they can be grown 

 in subtropical regions only, 

 and are prop, by seeds, also 

 by air-layering and by cut- 

 tings. Species 8, in S. E. 

 Asia. 



R. sinica seems to revel 

 in the light sandy soil of 

 the Florida gardens. Its 

 abundant, large, fern-like, 

 crimped bipinnate foliage 

 and its luxuriant symmetri- 

 cal growth combine to make 

 it an object of great beauty. 

 It grows to a height of 10 to 

 12 feet in one season, and if 

 not cut down by a severe 

 freeze it attains a height of 

 20 feet in two years, pro- 

 vided the soil is made rich 

 by a good fertilizer. Planted 

 out in a conservatory 7 in the 

 North it soon reaches stately 

 dimensions. It is easily 

 raised from cuttings placed 

 in sand. (H. Nehrling.) 



pentandra, Hemsl. (Oro- 

 xylumflavum, Rehd.). Ever- 

 green tree, to 20 ft., gla- 

 brous: Ivs. bipinnate, with 

 the stout petiole 2-3 ft. 

 long; Ifts. oblong to oblong- 

 lanceolate, entire, 3-7 in. 

 long: panicle about 1 ft. 

 long; calyx with 5 short 

 teeth, splitting; corolla yel- 

 low; tube 2 in. long; limb 

 spreading, about 3 in. across; 

 stamens 5 : caps, linear- 

 cylindric, to 3 ft. long. 

 Spring. S.W.China. H.I. 

 2728. S.T.S. 1 : 92. Hand- 

 some tree with bold foliage and showy yellow fls. exhaling 

 a heavy rather disagreeable odor; intro. by the Arnold 

 Arboretum, and flowered in the greenhouse in 1903. 



sinica, Hemsl. (Stereospermum sinicum, Hance). 

 Evergreen tree: Ivs. bipinnate; pinna? 8, each with about 

 7 stalked, ovate-lanceolate entire Ifts. obtusely acumi- 

 nate, glabrous, about 2 in. long: panicle large, terminal; 

 calyx campanulate, with 5 short triangular teeth; 

 corolla pale sulfur-yellow, with funnelform tube about 

 3 in. long and spreading roundish lobes about 1 in. long 

 with crisped margin: caps, subterete, 16 in. long and 

 %in. thick. S. E. China. ALFRED REHDER. 



3331. Radish forms. 1, Triumph, very flat or oblate form; 

 2, Early Dark Red; 3, Early White Turnip radish; 4, Triumph, 

 elongated form; 5, Triumph, typical form; 6, Early Dark Red, 

 another form; 7, Gray Summer Oval; 8, Long Brightest Scarlet; 

 9, Wood Early Frame; 10, Early Deep Scarlet Olive. 



RADICULA (little radish or root). Syn., Ror\pa, 

 Nasturtium. Cruciferz. Herbs, not cultivated except 

 water-cress, horse-radish, and one or two others. 



Plants mostly small, perennial, biennial, and annual, 

 with small white or yellow fls. mostly in racemes: Ivs. 

 (or at least the lowermost) usually pinnate or pinnati- 

 fid, commonly glabrous: fr. a sih'cle or short silique, 

 globular to cylindrical, with strongly convex nerveless 

 valves; seeds usually many, 

 small and marginless, in 

 most species in a double row 

 in each locule, the coty- 

 ledons accumbent. Species 

 more than 50, widely spread 

 in eastern and western 

 hemispheres, inhabiting low 

 grounds, swamps, and pools 

 or streams, mostly weedy 

 in character. These plants 

 formerly appeared under the 

 name Nasturtium, which, 

 however, dates only from 

 1812 whereas Radicula dates 

 from 1756. These plants 

 probably should bear the 

 name Roripa, which see. 

 The nasturtiums of gardens 

 are very different plants, 

 members of the genus Tro- 

 pseolum. 



Armoracia, Robins. (Coch- 

 ledria Armoracia, Linn. 

 Nasturtium Armoracia, 

 Fries. Ron-pa Armoracia, 

 Hitchc. Armoracia rus~ 

 ticdna, Gaertn.). HORSE- 

 RADISH. Stout perennial, 

 2-3 ft. high, from deep hard 

 root: root-lvs. large and 

 dock-like, oblong, crenate 

 or sinuate or the lower early 

 ones often deeply pinnati- 

 fid into narrow segms.; st.- 

 Ivs. lanceolate or the upper- 

 most linear, entire or 

 toothed: fls. white and 

 rather showy, numerous, the 

 style short: pods seldom 

 seen, globular, on ascending 

 pedicels. Eu.; escaped in 

 N. Amer. in moist places 

 and along water-courses. 

 The long tough roots fur- 



nish the horse-radish of gardens. See Horse-Radish. 



Nasturtium-aquaticum, Brit. & Rend. (R. officinalis, 

 Groves. Sisymbrium Nasturtium-aquaticum, Linn. 

 Nasturtium officinale, R. Br. Roripa Nasturtium, 

 Rusby). WATER-CRESS. Spreading and rooting soft 

 perennial: Ivs. more or less irregularly pinnate, of 3-11 

 oblong or roundish nearly entire or somewhat angle- 

 toothed segms. or Ifts.: fls. white, in racemes that 

 elongate in fr., the petals twice exceeding the calyx: 

 pods cylindrical, an inch long more or less, on spreading 

 pedicels, short-beaked. Eu., but widely naturalized in 

 streams in N. Amer. The herbage of this plant is 



(2895) 



