582 
THE DICTIONARY OF GARDENING. 
ORTHOCHILUS. A synonym of Eulophia (which 
see). 
OSMUNDA. To the varieties of O. regalis described 
on p. 530, Vol. II., the following should now be added: 
O. regalis gracilis (slender). A graceful form, the fronds of 
which sometimes come up tinted. See Fig. 53, for which we 
are indebted to Messrs. W. and J. Birkenhead. 
Fic, 53, OSMUNDA REGALIS GRACILIS. 
OSTEOCARPUS (from osteon, a bone, and karpos, 
fruit). Orv. Convolvulacee. 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 wood. 
O. rostratus (beaked). /l. azure-blue, bell-shaped. Summer. 1. 
scattered, terete. Branches pubescent. A remarkably pretty 
sub-shrub. (R. G. 1884, 1175, a-e.) SyNns. Alona rostrata, Nolana 
rostrata. 
OSTROWSKIA (named by Regel, in honour of the 
Russian botanist, Ostrowski). Orb. Campanulacee. 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. T.). 
O. magnifica (magnificent), /. blue, on long stalks, disposed 
in a terminal raceme; calyx with a series of linear pores at 
the base of the long, linear, acute segments ; corolla campanu- 
late, 3in. long and broad. J. in whorls, large, lanceolate, acutely 
toothed. h. 4ft. to 5ft. Central Asia, 1887. (G. C. ser. iii., 
vol. iv., p. 65; J. H. xvii., 1888, p. 53; R. G. 1887, p. 639; R. H. 
1888, 544.) 
OTANDRA. A 
see). 
OXALIS. ‘'o the species and varieties described on 
pp. 540-2, Vol. II., the following should now be added: 
O. catharinensis (Santa Catharina). #. white, greenish at 
base ; petals sin. to jin. long, narrow cuneate-oblong ; peduncles 
terete, unbellately four to fifteen-flowered. J., leaflets three, 
triangular, sub-sessile, 24in. 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 flore-pleno (imbricated, double-flowered). 7. of 
a deep rose-colour, ‘‘as double as the most double of Chinese 
Primulas” (W. Watson), nodding; peduncles hairy. JU. hairy. 
Port Elizabeth, 1886. (G. C. ser. iii., vol. ii., p. 681.) 
synonym of Geodorum (which 
OXERA (from ozeros, sour; in allusion to the acrid 
taste). Syn. Oncoma. Orv. Verbenacee. A genus em- 
bracing ten species of glabrous, often climbing, stove 
shrubs, natives of New Caledonia. Flowers whitish or 
yellowish-white, pedicellate, rather large; calyx four or 
five-cleft, or rarely sinuate-toothed; corolla limb four- 
cleft ; perfect stamens two, long-exserted ; 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. 
O. pulchella (pretty). #., calyx of four 
green sepals, 4in, to jin. long; corolla yel- 
lowish or faintly greenish-white, 2in. long, 
between funnel and bell-shaped, the lobes 
broadly oblong; cymes many - flowered. 
December. J. 2in. to 5in. 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. xvi., 1888, p. 87.) 
PZ:ONIA. 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 Ponies, and a very 
select group for ordinary establishments 
is as follows: 
Single Herbaceous Pzonies. ACasTa, 
flesh-colour; ASTROCA, silvery-rose ; BACELUS 
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 Pzeonies. ADELAIDE, pure white; 
ADONIA, 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; Lapy LroNORA BRAMWELL, silvery-rose; MEDIA, pale 
rose, large; MerpusA, 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 ; VESPER, primrose, outer petals pinkish-blush. 
Moutan or Tree Pzonies. ANTIGONUS, pale rose; HECATE, 
maroon, yellow stamens; ILLUSTRIS, rose; Laura, white and 
pale purple; LorpD TENNYSON, violet-purple; MAGNIFICENCE, 
cerise; PHdsBUS, rose, tinted salmon; REGALIS, rose, hand- 
some; VENOSA, white, flushed carmine. 
PALICOUREA. To the species described on p. 8, 
Vol. IIIL., the following should now be added: 
P. jugosa (ridged). J. opposite, elliptic-oblong, dark, satiny 
green, with depressed midrib and veins, the under surface 
purple. Brazil, 1886. 
P. nicotianzefolia (Tobacco-leaved). fl. Zin. long, shortly pedi- 
cellate; calyx pubescent, the lobes triangular; corolla pale 
yellow, tomentose, tubular, the lobes short, triangular, margined 
red; thyrse terminal or from one of the upper axils, 4in. to 7in. 
long, contracted. September. J. opposite, Sin. to Yin. long, 2in. 
to 3in. broad, elliptic-lanceolate or oblong, acuminate, rather 
membranous. Brazil. (B. M. 7001.) 
PALLASIA (of L’H¢ritier). 
(which see). 
PANAX. To the species described on p. 14, Vol. IIL., 
the following should now be added. All are stove shrubs. 
P. crispatum (crisped). J. densely disposed, triangular, pin- 
nately divided, deep green, with several pairs of overlappin, 
leaves and a terminal one, each of which is deeply incised an 
slightly toothed on the margins, thus imparting a crispy appear- 
ance; petioles and stem olive-green, spotted lighter green. 
Brazil, 1888. 
A synonym of Encelia 
