AN ENCYCLOPAEDIA OF HORTICULTURE. 



475 



Odontoglossum continued. 



O. r. xanthinum (yellow), fl. 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 (Beichenheim's). A synonym of 0. Iceve. 



O. Roezlii (Roezl's). A synonym of Miltonia Roezlii. 



O. Rossii (Ross 1 ).* 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. 0. acuminatum. See Fig. 717. (B. B. 1839, 48; 



F. d. S. 2110 ; Gn. xxviii. 507.) 



O. R. aspersum (sprinkled). t fl., sepals whitish-yellow, mottled 

 with brown blotches, keeled on the back ; petals broader, whitish- 

 yellow, with a few brown spots at the base ; lip whitish, the 

 basal callus yellow, with brown lines ; bracts short and broad. 

 1879. 



O. R. Ehrenbergii (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 variety, 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 

 petals having their lower halves covered by a large and beautiful 

 blotch, 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 dark purple, turning 

 to chestnut-brown. 1881. 



O. R, Warnerianum (Warner's).* /., sepals and petals 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 flve-flowered. Autumn and winter. I. one on 

 each pseudo-bulb, less than 9in. 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. Schillerlanum (Schiller's).* fl., sepals and petals yellow, 

 blotched with brown, or sometimes nearly all brown, cuneate- 

 oblong, acute ; lip with small, upright basal lobes, and an oblong- 

 acute, wavy, velvety front lobe, yellow, with a purple blotch and 

 two blunt calli on the disk. 1884. A fine species. (B. X. O. 



O. Schlie 



barred ' 



of spots ; scapes erect, many-flowered. Autumn. New Grenada, 

 1856. This species very closely resembles 0. (jrande in habit and 

 growth. (F. M. 461 ; G. C. 1865, 1082 ; B. G. 605 ; B. X. O. ii. 143.) 



O. Schrcederianum (Schroeder'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. 

 1882. 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. Juna Pseudo-bulb 2m. to 3in. long, one- 

 leaved. Mexico, 1839. A pretty, but not very showy, species. 

 (B. O. 13.) 



O. tentaculatum (tentacled). /., 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, 

 pandurate-lanceolate, acute. 1883. 



O. tetraplasium (four-formed), fl. white, with purplish spots, 

 growing on diffuse panicles, and equalling in size those of good 

 forms of 0. odoratum. Peru, 1875. Allied to 0. Weirii. 



O. tripudians (dancing).* fl. 2in. in diameter, brown, with 

 yellowish-green edges and a few dots ; sepals and petals nearly 

 equal, lanceolate ; lip oblong, acuminate, with a white basilar 

 disk ; the region about the calli of a beautiful purplish-violet ; 

 column whitish, with purplish-brown wings. Columbia, 1871. 

 (B. M. 6029 ; F. M. m. s. 208 ) 



O. t. Cinctum (girded), fl., sepals and petals yellow, blotched 

 with maroon ; lip very broad, white, with a large brown blotch 

 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. 1883. 



O. t. oculatum (eyed), fl., lip white, pandurate, crisped, marked 



ieperianmn (Schlieper's). fl. pale yellow, blotched and 

 with a deeper shade of the same colour, or almost destitute 



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 

 yellow hp, mauve blotches, and the crests only pure white. 



i O. triumphans (triumphant).* fl. large and thick in substance, 

 measuring upwards of 3in. 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 

 bearing shining bright green leaves. Tropical America, 1867. A 



' 1 very desirable varie - 



, Ire Skinner's).* /., sepals and petals oblong, 

 light green or greenish-yellow, freckled with reddish-brown spots 

 Ipn. across ; lip broad-cordate, white, thickly covered with soft 

 blue spots, and sometimes tinged with red ; spikes simple, 2ft to 

 3ft. high, from ten to twenty-flowered. Latter part of summer 

 and autumn. Pseudo-bulbs thick, bearing broad lanceolate 

 leaves, 9in. to 32in. in length. Guatemala, 1854. A bold, free- 

 growing species, very distinct in its colouring. It is closely 

 allied to O. bictonense, but may be distinguished by the broad 

 pseudo-bulbs, which become covered, in their second year, with a 

 multitude of small, reddish dots ; its wide sepals and petals and 

 the spotting of the lip. (B. O. 2.) 



O. velleum (fleecy). /., sepals and petals yellow, with brown 

 streaks ; lip whitish, with numerous violaceous stripes and 

 blotches. I. about 6in. long. Pseudo-bulbs narrow, flat. Ecuador, 

 1874. 



O. vexativum (provoking), fl., sepals chestnut-brown, broad; 

 petals broader, white, spotted with olive-green at the base ; 

 lip 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. vexlllariuni (standard). A synonym of Miltonia vexillaria. 



O. Victor (Victor). /., sepals and petals yellow, with brown 

 spots, spreading, wavy, and twisted; lip white, with brown 

 blotches, pandurate, denticulate. 1883. This plant bears great 

 similarity to 0. Hallii. 



O. Wallisil (Wallis'). fl. 2in. to Sin. 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, five to ten-flowered. 

 I. very narrow, gjrass-like, 9in. to 12in. long. Pseudo-bulbs ovoic" 



". purum. (I. H. n. s. 56.) 



,. ,.~~~ v.,^1.,.,. _,*. nu .,,, u,o.iied with lilac or purple, 

 disposed in diffuse panicles; lip wavy, oblong, acute, velvety 



ery narrow, grass-like, 9in. to 12in. long. Pseudo-bulbs ovoid, 

 two-leaved. Columbia, 1870. SYN. 0. purum. (I. H. n. s. 56.) 

 O. Weirii (Weir's), fl. white, marked with lilac or purple, 



spose n use panicles; lip wa 

 n the surface. New Grenada, 1875. 



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 lacinise ; 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 tendnl-like processes each 

 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 0. crispum and 0. luteo-purpureum. 

 (G. C. n. s., xxi. 640.) 



O. W. sulphureum (sulphur-coloured). /. 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. 



ODONTOSFER.MUM (from odous, odontos, & 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, heterogamons ; 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 



