beauty of B Pseudacacia was earl\ recognized and it 

 was extensively planted, but the attacks of the borer 

 have caused great loss and checked the planting of a 

 beautiful tree 



^ov 





(XK). (See page 1537.) 



Pseudacicia, Linn. Locust. False Acacia. Black 

 Locust. Fig. 2135. This species is the largest of the 

 genus, growing to a height of 80 ft. Lfts. short-stalked. 

 9-19, 1-2 in. long, oval or ovate, smooth, often emargi- 

 nate or mucronate: bark on young wood brown and 

 glandular; stipules glandular, enlarging with age and 

 becoming strong thorns on the 2-year-old wood : fls. 

 white and fragrant, in drooping racemes: fr. a broad, 

 brown, many-seeded pod or legume. May, June. East- 

 em N. A. — Wood very lasting, and adapted to many uses. 

 Many varieties of this species are in cultivation, the 

 following being sold in this country: ailrea, Hort., has 

 pale yellow Ivs.; bella-rdsea, Hort., rose-colored fls., 

 and is probably a hybrid of JS. Pxeudiieacia and if. ris- 

 cosa; var. inSrmis, DC, is a thornless variety, with 

 large dark foliage; bvillita, Hort., is much like Bessoni- 

 ana (below), but more compact; Decaisneina, Carr., is a 

 form with handsome rose-tinted fls. R.H. 1863:1.51. F.S. 

 19:2027. I.H. 12:-t27. Gn. 34, p. 174; spectdbilis, Du 

 Mont Cour., is a strong-growing thornless v.ir. ; mono- 

 phl^lla, Pelz. & Kirchn., is the Single-leaf Locust, and of 

 this there is a slightly pendulous sub-var. ; pendula, 

 Loud., is a form with broad, spreading, somewhat 

 ■drooping branches ; semperfldrens, Hort., is said to 

 flower throughout the summer; vars. gldbula, strlcta 

 and mimosaefdlia are horticultural forms, which are suf- 

 ficiently described by their names; pyramid^lis, Petz. 

 & Kirchn., is a distinct narrow-growing form; umbra- 

 cuUfera, DC. Umbrella Locust. Thornless, the gla- 

 brous branches densely crowded : lfts. ovate. Vars. 

 rubra, stricfa and Bessoniana are forms of this. Very 

 distinct. 



hlspida, Linn. Rose Acacia. Pig. 2136. A shrub 2- 

 8 ft. high, all parts of the plant except the fls. bristly 



or hairy: lfts 

 eels, rose coloi 

 B.M. 311. Gn 



>ike the next species, it 

 iikl be planted where it will 

 s. Seldom matures seed. 



and seed -pods covered with viscid -glandular ha 

 lfts. 11-25: fls. in a short and usually rather erect ra- 

 ceme, rose color. June - - ■ • 

 3:115. B.M. 560.-Thev; 

 acacia, var. hella-rosea 

 Neo-Mezici.na, Gray, 

 stout stipular prickle: 

 glandular-hairy: fls. in drooping axillary 

 color. Southwestern N. Amer. S.S. 3:114 



R. Kelseyi is "a new speeies discovered and introduced in 

 1901, by Harlan P. Kelsey. The bark much resembles R. Pseud- 

 acacia and the plant is sparingly pubescent." It is It. Boyn- 

 toni, Ashe. jOHj, p CowELL. 



ROBIN'S PLANTAIN, Erigeron beUidifoUus. 



ROCAMBOLE {Allium Scorodoprasum, Linn.), is a 

 humble member of the onion tribe, the underground 

 bulbs of which are used abroad like garlic, known in 

 America amongst the Canadian French. The plant is a 

 hardy perennial, with a stem that is twisted spirally above 

 and bears at the top an umbel of flowers, some or all of 

 which are changed to bulblets. The presence of these 

 bulblets distinguishes the plant from garlic. The spe- 

 cies can be propagated by the bulblets, but quicker re- 

 sult-; ui-e secured from the cloves of the underground 

 l.ull.s. In mild climates, the bulbs should be planted in 

 aumum or not later than February; in cold climates, 

 lihuit in spring. In the autumn when the leaves decay, 

 the bulbs are lifted, dried in the sun, and stored. 



Rocambole is a native of Europe, the Caucasus region 

 and Syria. It has flat or keeled leaves, short spathe, 

 bell-shaped, 6-parted perianth, and the 3 inner stamens 

 broader than the rest, 3-cleft, and not longer than the 

 perianth. It is a perennial plant. Good seeds are 

 rarely produced. 



ROCCARDIA. Consult Helipterum. 



ROCHEA (de la Roche, French botanist). Crassu- 

 lilcece. A genus of 4 species of succulent plants from 

 S. Africa, with opposite, oblong-ovate or lanceolate Ivs. 

 and fls. in terminal, few-to many-fld. heads. For generic 

 characters, see Crassula. The best species is I{. coc- 

 cinea. The following points concerning its culture are 

 condensed from Gn. 46, p. 360: This species enjoys an 

 abundance of light and sun-heat, and needs to have its 

 wood thoroughly ripened in the autumn to insure a dis- 

 play of bloom. If small plants can be procured they 

 should be nipped about February 1. If a few leaves are 

 removed, after the top is pinched out, shoots will start 

 more evenly. After pinching, the plants are put into 

 considerably larger pots, a peaty soil being generally 

 used and good drainage given. They should be given a 

 night temperature of 50°, day temperature of 7&-80° 

 in sunshine, with plenty of atmospheric moisture until 

 the new growths are freely produced, when they should 



A shading of the glass may be 

 r the plants may be placed in a 

 sheltered position outside. About August, when the 

 plants have made as much growth as can be ripened 

 that season, they may be placed in a warm, dry, sunny 



