AN ENCYCLOPADIA 
475 
OF HORTICULTURE. 
Odontoglossum—continued. 
O. r. xanthinum (yellow). . yellow; sepals and petals twisted, 
streaked and spotted with mauve-purple; callus of lip ochre, 
with mauve-purple radiating rays around and before it. Colum- 
bia, 1880. A pretty variety. 
O. Reichenheimii (Reichenheim's). A synonym of O. Ine. 
O. Roezlii (Roezl's). A synonym of Miltonia Roezlii. 
O. Rossii (Ross’).* fl. from lin. to 2in. across; sepals lanceolate, 
about lin. long, white, transversely barred with brown; petals 
sub-hastate, much broader than the sepals, pure white, with a 
few spots at their bases only; lip oblong or cordate, pure white, 
with a lemon-yellow, bilobed crest; column white ; scapes from 
two to five-flowered. Winter. Pseudo-bulbs angular. Mexico, 
1839. Syn. O. acuminatum. See Fig. 717. (B. R. 1839, 48; 
F. d. S. 2110; Gn. xxviii. 507.) 
O. R. aspersum (sprinkled) f ., sepals whitish-yellow, mottled 
with brown blotches, keeled on the back ; pa broader, whitish- 
ellow, with a few brown spots at the base; lip whitish, the 
asal callus yellow, with brown lines ; bracts short and broad. 
1879. 
O. R. Ehrenber; (Ehrenberg’s).*t fl., sepals pure white, 
narrow ; petals white, barred with brown at base; lip white. 
Autumn and winter. Pseudo-bulbs and leaves small, dark green. 
Peru, 1842. A very pretty little 3 which may be grown 
in a rustic basket, suspended from the roof of a Wardian 
case, (F. d. S. 846; I. H. i. 30.) 
O. R. Humeanum (Hume’s). fl., sepals yellow at their ends, 
with cinnamon bars, triangular-acuminate; petals oblong-acu- 
minate, crisped, white, with three sepia-brown blotches at 
their base; lip two-lobed, white, with a yellow callus, striped 
inside with red ; peduncle two-flowered. 1876. 
O. R. musaicum (mosaic). A very handsome form, the violet 
pran having their lower halves covered by a large and beautiful 
lotch, green and yellow, and the lobes streaked and dotted. 
O. R. rubescens (ruddy). A grand variety, with large, light, 
rose-coloured flowers, richly marbled with k purple, turning 
to chestnut-brown. 1881 
O. R. W. um (Warner's).“ fl., sepals and — pure 
white, with a few brown spots; lip white, shaded with rose, and 
having a yellow blotch at the base; scape longer than the 
leaves, four or five-flowered. Autumn and winter. J. one on 
each pseudo-bulb, less than Qin. long, membranous, sharp- 
pointed, narrowed at the base into a channelled petiole. 
Mexico, 1865. A very handsome, dwarf species. (B. O. 13; 
G. C. 1865, 579.) 
O. Schillerianum (Schiller’s).* fl., sepals and petals yellow, 
blotched with brown, or sometimes nearly all brown, cuneate- 
oblong, acute; lip with small, upright basal lobes, andan oblong- 
acute, wavy, velvety front lobe, yellow, with a purple blotch and 
two blunt calli on the disk. 1884. A fine species. (R. X. O. 
i, 22.) 
O. Schlie um (Schlieper’s). ji. pale yellow, blotched and 
barred with a deeper shade of the same colour, or almost destitute 
of spots ; scapes erect, many-flowered. Autumn. New Grenada, 
1856. This species very closely resembles O. grande in habit and 
growth. (F. M. 461; G. C. 1865, 1082; R. G. 505; R. X. O, ii. 143.) 
. Schræderianum (Schræder’s). fl., sepals. and petals white, 
with mauve-purple blotches, oblong, acute, wavy ; lip pandurate, 
white, with two mauve-purple blotches on the disk ; callus having 
a plate of radiating spines on each side, yellow, with red spots. 
1382. A distinct hybrid, in the way of O. tripudians. 
O. stellatum (starry-flowered). fl. pale yellow, barred with 
brown; sepals and petals about lin. long; lip white, somewhat 
concave, very much jagged round the margin; scapes about 4in. 
high, one-flowered. June. Pseudo-bulb 2in. to Sin. long, one- 
. 6 13 Mafi, 1839. A pretty, but not very showy, species. 
tentaculum (tentacled). fl., sepals and petals yellow, spotted 
with white, narrow, without angles; lip whitish, with a large 
brown spot on the disk, and some small ones at the base, 
pa lanceolate, acute. 1 
O. tetraplasium (four-formed). f. white, with purplish spots, 
growing on diffuse panicles, and equalling in, size those of good 
forms of O. odoratum. Peru, 1875. Allied %0. Weirii. 
y 
O. tripudians (d * fl. Lin. in diameter, brown, with 
yellowish-green edges and a few dots; sepals and petals nearly 
equal, lanceolate; lip oblong, acuminate, with 4 white basilar 
—＋ the ree anoi the a of a beautiful purplish-violet ; 
column whitish, wi urplish-brown win; Columbia, 1871. 
(B. M. 6029; F. M. m. s. 208.) jr ; 
O. t. cinctum (girded). fl., sepals and 
with maroon ; lip. very broad, white, wi 
and smaller ones beside it. 1883, 
O. t. Harryanum (Mr. Harry Veitch’s). In this form, the sepals 
and petals are almost blackish inside, tipped with light yellow ; 
the lip is light yellow, and mauve at the base. 1 
O. t. oculatum (eyed). f., lip white, pandurate, crisped, marked 
tals yellow, blotched 
a large brown blotch 
odontoglossum continued. ; : 
with violet around the crest, and with a large brownish-violet 
blotch in front. : 
O. t. xanthoglossum (yellow-lipped). A variety with a totally 
45 lip, mauve blotches, and the crests only pure white. 
O. triumphans (triumphant).* jl. large and thick in substance, 
measuring upwards of Jin. in diameter; sepals and petals bright 
golden-yellow, blotched with deep brownish-crimson ; lip cordate, 
the front portion deep warm rose-colour, and the basal half pure 
white, with a yellow centre; scape erect, many-flowered, branched. 
Spring. Pseudo-bulbs short, thick, speckled with brown, and 
1 Apatite baene groen enves Tropical Anina 1867. A 
splendid species, of whic ere are several very desirable varie- 
cea, (B. O. 23; I. H. 609; W. O. A. 258.) 1 
O. Uro-Skinneri (Ure Skinner's).“ fl. light green or greenish- 
yellow, freckled with reddish-brown s h 13 in. across; sepals 
and petals oblong ; lip broad-cordate, white, thickly covered with 
soft blue spots, and sometimes tinged with red; — i simple, 2ft. 
to 3ft. high, from ten to twenty-flowered. Latter part of summer 
and autumn. Pseudo-bulbs thick, bearing broad lanceolate leaves, 
din. to 12in. in length. Guatemala, 1854, A bold, free-growing 
species, very distinct in its colouring. It is closely allied to O. bic- 
tonense, but may be distinguished by the broad pseudo-bulbs, 
e pecon: year, with a multitude of 
sma. ish dots, e sepals and petals, and the spotting of 
the lip. (B. O. 2.) Ea ae fetes} 
O. velleum (fleecy). f., sepals and petals yellow, with brown 
streaks ; lip whitish, with numerous ra hs aoa stripes and 
Sm l. about 6in. long. Pseudo-bulbs narrow, flat. Ecuador, 
O. vexativum (provoking). fl., sepals chestnut-brown, broad; 
vetals broader, white, spotted with olive-green at the base; 
ip with a broad, semi-ovate blade, white, with a few oliva- 
ceous spots; callus yellow, with small red blotches; column 
white, wingless, tomentose ; inflorescence large; bracts spatha- 
ceous. Mexico, 1877. A beautiful orchid. 
O. vexillarium (standard). A synonym of Miltonia vexillaria. 
O. Victor (Victor). fl., sepals and petals yellow, with brown 
3 spreading, Mee and Poot py lip white, with brown 
blotches, pandurate, denticulate. 1883, This plant bears great 
similarity to O. Hallii. 
O. Wallisii (Wallis). f. 2in. to 3in. across; sepals and petals 
oblong, about lin. long, golden-yellow, blotched with rosy- 
purple; lip straw-coloured, with a rosy blotch near the apex, 
partially adnate to the column, and having the crest, margin, 
and apex white; spike erect or arching, tive to ten-flowered. 
l. very narrow, grass-like, 9in. to 12in. long. Pseudo-bulbs ovoid, 
two-leaved. Columbia, 1870. Syn. O. purum. (I. H. n. s. 56.) 
O. Weirii (Weir's). fl. white, marked with lilac or purple, 
disposed in diffuse panicles; lip wavy, oblong, acute, velvety 
on the surface. New Grenada, 1878. 
O. Weltoni(Welton’s). A synonym of Miltonia Warscewiczii. 
O. Wilckeanum (Herr Wilcke’s).* fl. of a very light whitish- 
yellow ; sepals triangular, crisp ; petals oblong, triangular, much 
broader, with some projecting angular laciniæ; both sepals and 
petals have elegant brown blotches, which are transverse in 
the former and marginal in the latter; lip similar to that of 
O. crispum, with three to five small tendril-like processes eac 
side, and two ragged keels, which are free at their ends, 
including an intermediate apiculus, orange at the base, else- 
where lightest yellow, with some brown blotches ; column pale 
whitish-yellow, with a few brown spots; peduncles bearing a 
raceme of about five flowers. 1878. A very handsome hybrid, 
just intermediate between O. crispum and O. luteo-purpurewm. 
(G. C. n. s., xxi. 5] 
O. W. sulphureum (sulphur-coloured). f. sulphur-coloured, 
having a few red blotches and lines on the lip, and one or 
two on the lateral sepals. 1884. 
ODONTOLOMA. Included under Davallia (which 
see). 
ODONTOSORIA. Included under Davallia. 
ODONTOSPERMUM (from odous, odontos, a tooth, 
and sperma, a seed; the pappus of the seeds is toothed). 
Syns. Asteriscus, Nauplius. ORD. Composite. A genus 
comprising about eight species of hardy or- greenhouse, 
annual or perennial herbs, rarely shrubby, natives of 
the Mediterranean and Canary region, from the Orient 
to the Cape de Verde Islands. Flower-heads yellow, 
mediocre or rather large, heterogamous; involucre hemi- 
spherical or broadly campanulate; receptacle slightly 
convex; achenes villous or glabrescent. Leaves oppo- 
site, entire, or rarely toothed or sub-pinnatifid. The 
first of the undermentioned species requires similar treat- 
ment to that found necessary for common hardy annuals : 
sow the seeds in the open border, in spring, and thin 
