2342 



ONCIDIUM 



ONCIDIUM 



scales at the base : Ivs. membranous, oblanceolate, 12-14 

 in. long: scape rather slender, over 1 ft. long, with a 

 pendent panicle more than a foot long: sepals and 

 petals linear-subulate, flaccid and somewhat twisted, 

 greenish yellow, with deep orange blotches; labellum 

 shorter than the sepals, white, with a yellow and orange 

 crest; the middle lobe triangular-ovate, acuminate. 

 Brazil. B.M. 5214. F.S. 23:2465. G.C. 1848:139. 



3. serratum, Lindl. Fig. 2577. Pseudobulbs 4-6 in. 

 long, partly inclosed by sheathing Ivs., 1-2-lvd.: Ivs. 

 about 1 ft. long and 2 in. broad: infl. a long, twining, 

 loosely-branched panicle, 6-10 ft. long; fls. numerous, 

 3 in. across; upper sepals broad, reniform, the lateral 

 ones very much longer, obovate, all chocolate-brown, 

 with yellow tips and margins, strongly undulate, ser- 

 rate; petals shorter, oblong, wavy and curled so that 

 they almost meet over the column, yellow with brown 



2577. Oncidium serratum. ( X Ji) 



spots, margins serrate; labellum small, hastate, fleshy, 

 with a crest of 5 ridges. Winter. Peru. B.M. 5632. 

 F.S. 6, p. 167. 



4. superbiens, Reichb. f. Pseudobulbs 3-4 in. long, 

 ovate to ovate-lanceolate, much flattened: Ivs. linear, 

 14 in. long and 1J4-1H in. broad, some sheathing the 

 pseudobulb: panicle 2-3 ft. long, loosely branched and 

 flexuous, bearing 20-30 fls. each 2^ in. diam.; sepals 

 long-clawed, undulate, chocolate-brown with yellow 

 tips; the upper one trowel-shaped, with a cordate base, 

 the lower pair more ovate; petals rather smaller, with 

 shorter, broader claws, much recurved and wavy, yellow 

 with brown bars; labellum less than half as large as the 

 sepals, revolute, trowel-shaped, with auriculate side 

 lobes, brown with a yellow crest. Spring. Venezuela, 

 Colombia. B.M. 5980. 



5. macranthum, Lindl. (0. fiastiferum, Hort.). 

 Pseudobulbs ovoid or flask-shaped, 3 in. long: Ivs. nar- 

 rowly lanceolate, acuminate, 1 ft. long: panicle climb- 



ing, loosely branched and many-fld.; fls. 3-4 in. across; 

 sepals rounded-oblong, with green claws, the upper one 

 yellowish brown, the lower pair orange-yellow; petals 

 similar, golden yellow, streaked with blood-red at the 

 base; labellum small, hastate, purple-brown, with a 

 prominent white crest. Spring and summer. Cent. 

 Amer. B.M. 5743. Gn. 24:486. F. 1871, p. 187. J.H. 

 III. 34:337. A magnificent orchid, of which there are 

 several varieties, some of secondary merit. 



A. Petals clawed, with a broad, obovate 

 or rounded blade, not much smaller 

 than the labellum. 

 B. Fls. yellow; column-wings short, 



quadrate 6. Marshal- 

 SB. Fls. red-brown; column-wings nar- [lianum 



row, angular 7. Forbesii 



BBB. Fls. dull brown, with yellow mark- 

 ings. 



c. Column-wings small, truncate. ... 8. curtum 

 cc. Column-swings large, sharply ser- 

 rate 9. crispum 



AA. Petals and dorsal sepals obovate, 



cucullate, not clawed 10. cornigerum 



AAA. Petals and dorsal sepals subsimilar, 

 very small; labellum larger than the 

 rest of the fl. 



B. Labellum white, spotted with rose- 

 purple 11. cucullatum 



BB. Labellum yellow. 



C. Blade bifid 12. Martianum 



13. flexuosum 



cc. Blade quadrifid 14. varicosum 



AAAA. Petals and sepals lanceolate, ovate, 

 at least one-half as long as the label- 

 lum and of a different form. 



B. Fls. white, spotted with purple 15. Phalasnopsis 



BB. Fls. yellow or greenish, spotted and 

 barred with brown. 



c. Crest serrate 16. longipes 



CC. Crest a smooth, heart-shaped cal- 

 lus 17. dasystyle 



BBB. Fls. entirely yellow 18. concolor 



6. Marshallianum, Reichb. f. Pseudobulbs ovoid, 

 2-4 in. long: lys. narrowly oblong, 6-8 in. long: fls. 

 numerous, 2^4 in. across, borne on a stout panicle 1-2 

 ft. high; the upper sepals oblong-apiculate, the lateral 

 ones united, yellow, with purplish bands; petals much 

 larger, fiddle-shaped, wavy and 2-lobed, golden yellow, 

 with few blotches of chocolate-brown; labellum with a 

 very large spreading 2-lobed middle lobe and ear-like 

 side lobes, yellow, with orange-red spots on the base. 

 May. Brazil. B.M. 5725. F.M. 1877:285. A very 

 effective and showy plant related to 0. crispum. Var. 

 sulphur eum, Hort., has yellow fls. without the usual 

 markings. 



7. Forbesii, Hook. Pseudobulbs rather small, oblong, 

 compressed and sulcate: Ivs. lanceolate, dark green, 

 9 in. long: panicle about 1 ft. high, bearing numerous 

 handsome fls. 2 in. across; fls. rich reddish brown, mar- 

 gined with yellow; sepals small, obovate; petals twice 

 as large, obovate-rotund ; side lobes of the labellum 

 small; middle lobe spreading, fan-shaped. Autumn. 

 Brazil. B.M. 3705. G.C. II. 11:525. A rare but very 

 ornamental orchid. Var. atratum, Hort., has large fls., 

 purple-brown. Var. Bradshawae, Hort., an alpine form 

 with yellow markings. 



8. curtum, Lindl. Lvs. and pseudobulbs like those 

 of O. crispum: infl. an erect, much-branched pyramidal 

 panicle; fls. 1-1 J/ in. across; lateral sepals united, 

 rather small; dorsal sepals and petals obovate-obtuse, 

 yellow, with reddish brown bars and blotches ; labellum 

 with small lateral lobes and a roundish, notched middle 

 lobe, yellow bordered with brown; crest lobed and 

 warted, yellow, with red spots. Brazil. B.R. 33:68. 

 Gn. 10, p. 131; 31, p. 198; 34, p. 87. Blossoms in 

 spring, the fls. remaining fresh for several weeks. 



9. crispum, Lodd. Pseudobulbs oblong, sulcate, 

 rough and usually dark brown : Ivs. leathery, lanceolate, 



