582 



The Dictionary of Gardening. 



ORTHOCHXLTTS. A synonym of EulopMa (wliicli 1 

 see). 



OSMXJNDA. To the varieties of 0. regalis described 

 on p. 530, Vol. II., the following should now be added : 



O4 regalis gracilis (slender). A graceful form, the fronds of 

 which sometimes come up tinted. See Fig. 53, for which we 

 are iuJebted to Messrs. >Y. and J. Birkenhead. 



OXIiRtA (from oxeros, sour ; in allusion to the acrid 

 taste). Stn. Oncoma. Oed. Verbenaceoe, A ^enus em- 

 bracing ten species of glabrous, often climbing, stove 

 shrubs, natives of New Caledonia. Flowers wbitisli or 

 yellowish- white, pedicellate, rather large; calyx four or 

 five-cleft, or rarely sinuate-toothed; corolla limb four- 

 cleft; perfect stamens two, long-esserted ; bracts usually 



small ; cymes dichotomous, peduncu- 

 late in the upper axils, or disposed in a 

 terminal, trichotomous panicle. Leaves 

 opposite, entire, coriaceous. Only one 

 species has been introduced. It thrives 

 in good, rich, loamy soil, and may be 

 increased by cuttings. 



pnlchella 



fl., calyx of four 



o-reen sepals, Jin, to jin. long ; corolla yel- 

 lowish or faintly greenish-white, Sin. long, 

 between funnel and bell-shaped, the lobes 

 broadly oblong ; cymes many - flowered. 

 December. /, 2in. to Sin. long, petiolate ; 

 upper ones oblong, obtuse or sub-acute ; 

 lower ones longer, oblong-lanceolate, ob- 

 tusely acuminate, entire or with shallow 

 crenatures. 1886. A handsome climber. 

 (B. M. 6938: G. C. ser. iii, vol. iii., p. 209; 

 Gn. xxxiii., 510; J. H. xvl, 1888, p. 87.) 



Fig. 53. OsMUWDA regalis gracilis. 



OSTEOCABFTJS (from osteon, a bone, and Icarpos, 

 froit). Obd. Convolvulaceoe, A genus of greenhouse 

 herbs or sub-shrubs, founded by Philippi, only differing 

 from Nolana in the very hard, bony fruit (whence the 

 generic name). They thrive in sandy loam, and may be 

 increased from seeds, or by cuttings of the young wxod. 



O. rostratus (beaked). /. azure-blue, bell-shaped. Summer. /. 

 Bcattered, terete. Branches pubescent. A remarkably pretty 

 sub-shrub. (11. O. 1884. 1175, a-e.) Syns. Alona rostrata, ^Nolaiia 

 rout rata. 



OSTROWSKIA (named by Eegel, in honour of the 

 TCussian botanist, Ostrowski), Ord. Camjmnnlacece. A 

 monotypic genus.. The species is a very handsome and 

 distinct, hardy, perennial herb, requiring similar culture 



to the tall perennial species of Campanula (which see, 

 on p. 253, Vol. I.), 



O. magnifica (magnificent), fi, blue, on long stalks, disposed 

 iu a terminal raceme ; calyx with a series of linear pores at 

 the base "f the long, linear, acute segments; corolla campanu- 

 late, 3In. long and broad. I. in whorls, large, lanceolate, acutely 

 toothed, h. 4ft. to Wt. Central Asia, 1887. (G. C. ser. iii., 

 vol. iv., p. 65; J. H. xvii., 1888, p. 53; K. G. 1887, p. 659; R. H. 

 1888, 344.5 



OTANDBA. 



see), 



OXAZiXS. To the species and varieties described on 

 pp. 510-2, A"ol. II., the following should now be added: 



O, catharlncnsis (Santa Catharina). ,/f. white, greenish at 

 base; petals I'm. to|in. long, narrow cuneate-oblong ; peduncles 

 terete, unbellately four to fifteen-flowered. I., leaflets three, 

 triangular, sub-sessile, 2^in. broad, cuneate at base, truncate 

 at apex, green and glabrous above, paler or purplish and 

 minutely hairy beneath ; petioles 2in. to 8in. long. Rhizome 

 branching, covered with fleshy scales. South Brazil, 1887, 



O. imbricata florc-plcno (imbricated, double-flowered), /f. of 

 a deep rose-colour, **as double as the most double of Chinese 

 Primulas" (W. Watson), nodding; peduncles hairy. I. hairy. 

 Port Elizabeth. 1886. (G. C. ser. ill., vol. ii., p. 631 ) 





A synonym of Geodomm. (which 





P2IONIA. The single varieties of 

 this useful, hardy flower have recently 

 taken a high position in the estimation 

 of gardeners. There are something like 

 150 named garden P^eonies, and a very 

 select group for ordinary establishments 

 is as follows : 



Single Herbaceous Pseonies. Acasta, 



flesh-colour; Astroca, silvery-rose ; BACELts 

 pink, yellowish centre ; Goliath, crimson ; 

 GORDius, maroon ; Gorgonius, purple ; 

 Janus, light purple; Levoni, white; Or- 

 THIA, white, rose margin ; Queen of May, 

 French white. 



Double Herbaceous Fseonies* Adelaide, pure white ; 

 Adoxia, rosy-purple; Agenoria, cream; Ancona, bright rose, 

 large; Atalanta, rose; Beatrice Kelway, flesh colour; 

 Glory of Somerset, soft pink, large ; Labolas, purplish-rose, 

 distinct yellow tip ; Lady Gwendoline Cecil, rose, large and 

 full; Ladv Leonora Bramwell, silvery-rose; Media, pale 

 rose, large ; Medusa, rosy-lilac ; Millais, maroon ; Pearl, 

 white, with a pale rose tint ; Prince Henry of Battenberg, 

 purple ; Princess Beatrice, pink outer petals, yellow and pink 

 centre ; Princess Irene, primrose centre, pink petals ; Princess 

 Mary of Cambridge, rose ; Princess of Wales, flesh-colour ; 

 Queen Victoria, rose, broad outer petals; Sir Frederick 

 Leighton, purplish-crimson; Thisbe, pale pink; Vertumnus, 

 rosy-blush ; Vesfer, primrose, outer petals piukish-blush. 



Moutan or Tree Paaonies. Antigonus, pale rose ; Hecate, 

 maroon, yellow stamens ; IlluSTRis. rose ; Lauta, white and 

 pale purple ; LORD Tennyson, violet-purple ; Magnificence, 

 cerise; Phcebus, rose, tinted salmon; Regalis, rose, hand- 

 some ; Venosa, white, flushed carmine. 



PAIiICOITREA. To the species described on p. 8, 

 Vol. III., the following should now be added : 



P. Jugosa (ridged). I, opposite, elliptic-oblong, dark, satiny 

 green, with depressed midrib and veins, the under surface 

 purple. Brazil, 1886. 



P. Hi cotianae folia (Tobacco-leaved), fl. §in. long, shortly pedi- 

 cellate ; calyx pubescent, the lobes triangular ; corolla pale 

 yellow, tomentose, tubxUar, the lobes short, triangular, margined 

 red ; thyrse terminal or from one of the upper axils, 4in. to 7in. 

 long, contracted. September. I. opposite, bin. to 9in. long, 2in. 

 to 3in. broad, elliptic-lanceolate or oblong, acuminate, rather 

 membranous. Brazil. (B. M. 7001.^ 



\ -> 



FAI.I.ASIA 



(which see). 



A synonym of Encelia 



To the species described on p. 14, Vol. III., 

 the following should now be added. All are stove shrubs. 



P. crispatxuii (crisped), h densely disposed, triangular, pin- 

 nately divided, deep green, with several pairs of overlappin- 

 leaves and a terminal one, each of which is deeply incised am 

 slightly toothed on the margins, thus imparting a crispy appear- 

 ance; petioles and stem olive-green, spotted lighter green. 

 Brazil, 1888. 



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