1130 ONCIDIUM 



regions under more or less similar conditions. A tem- 

 perature of 55° to 60° at night, and correspondingly 

 higher during the day, will suit most species. An abun- 

 dant supply of air and light, though in partial shade, is 

 indispensable. Water must be used freely during the 

 growing season and somewhat reduced during their 

 respective resting seasons. An occasional dipping in 

 manure water (either cow or sheep manure) will greatly 

 assist these plants in bringing to perfection their 

 flower-spikes, which are oftentimes very large. In a 

 good many species the flower-spikes are out of all pro- 

 portion to the size of the plants, and unless they are 

 assisted as indicated, they will very soon run out. 



For potting, use very soft fibrous peat, with a sprink- 

 ling of live sphagnum. Pot firmly, or the plants will be 

 very slow in taking hold. John E. Lager. 



INDEX. 



alliiflonim, 31. exeavatum, 20. micvopogon. 1. 



album, 31. flexuosum, 13. nubigenum, 11. 



altissimum, 24. 25. Forbesii. 7. ormthorhyiiclium, 



ampliatum, 19. grandiHonim. 9, 21. 31. 



aurosum, 20. giittatum. 44. PapUio, 45. 



Barkeri, 21. Harrisianum, 29. Phalsenopsis, 15. 



Batemanniammi, Harrisonianum, 29. phymatochtlum, 2. 



28. hastiteruin, 5. pulvinatum, 33. 



Baueri, 24. Henchmannii, 43. pumilum, 38. 



bicallosum. 40. inciu-vum, 23. reflexum, 27. 



bicolor, 12. iridifolium, 39. Rogersii, 14. 



Carthaginense. 43. Janeirense, 16. roseum, 43. 



Cavendishianum, Jonesianum. 47. sanguineum, 43. 



41, iuncifoliuin, 48. serratum, 3. 



CeboUeta. 48. Kramerianum. 46. spbacelatum, 26. 



cheirophorum, 37. Lanceanum, 42. splendidum, 22. 



concolor, 18. leucochilum, 30. superbiens, 4. 



cornigenim, 10. Limminghii, 36. superbum. 1, 42. 



crispura, 9. longipes, 16. tigrinum, 21. 



Crista-galli. 39. Louvrexianiun, 42. triquetrum, 49. 



cucallatum. 11. hiridum. 44. undulatum, 43. 



eurtum. 8. macranthum, 5. unguiculatum, 18, 



dasystyle. 17. maeulatum. 35. 21. 



divaricatum, 32. Marshalliiinum, 6. varicosum, 14. 



Eckhardtii, 45. Martianum, 12. Warneri, 34. 



Synopsis op Sections. 



A. Leaves plane, not terete. 



B. Labellitm smaller than the sepals and 



petals Species 1-5 



BB. Labellum at least as large as the other 

 segments, often greatly exceeding them. 



C. Lateral sepals more or less united at base. 



Species 6-18 



CC. Lateriil sipalx free, 

 v. All the sei/meiils having a distinet blade, 

 none III them Unear-subterete. 



E. Pse,i,l„h,ill,.i /, resent Species 19-37 



EB. Pseii'Inlnilhs Hfi iif i iifi ne obsolete .. .Species 38-44 

 ryv. Oiihi hit.ral sf/uils leifh distinct blade; 

 ilnrsal se/nil d ml petals elongate, linear, 



erect, with au obsolete blade Species 45-46 



AA. Lvs. terete or subterete Species 47-48 



AAA. Lvs, subtriangular in section Species 49 



Description op Species. 



A. Lateral sepals united at base..\. micropogon 

 AA. Lateral sepals free. 



B. Sepals and petals linear, 



flaccid 2. phymatoohilum 



BB. Sepals and petals broad, ser- 

 rate 3. serratum 



BBB. Sepals and petals broad, entire 

 or subentire. 



c. Fls. brown 4. superbiens 



CC. Fls. yellow 5. macranthum 



1. micropdgon, Reichb f. Pseudobulbs almost in 2 

 rows ou the rhizome, broadly ovoid : Its. 4-G in. lone;, 

 linear-oblong, rounded at the top, leathery: raceme 

 8-10 in. long, on a long stalk, flexuous, pendulous: fls. 

 IK in. across ; sepals linear -obloug, undulate, yellow, 

 barred with brown ; petals clawed, orbicular, yellow, 

 with a deep red-brown claw; labellum yellow, smaller 

 than the petals, having 3 almost equal, rounded, clawed 

 lobes. Aug. Trop. Amer. B.M. 6971. — Var. supSrbum, 

 Hort. , is advertised. 



2. phymatoohilum, Lindl. Pseudobulbs broadly fusi- 

 form, 4-5 in. long, purplish brown, with several large 



ONCIDIUM 



scales at the base: lvs. 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. serritum, Lindl. Fig. 1523. Pseudobulbs 4-6 in 

 long, partly enclosed by sheathing lvs., 1-2-lvd.: lvs 

 about 1 ft. long and 2 in. broad : inflorescence 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, 

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

 they almost meet over the column, yellow with brown 

 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, Riicbb. f. Pseudobulbs 3-4 in. long, 



ovate tci "vatc-laiH late, much flattened: lvs. linear, 



14 iTi. loni; :ind 1 ',-1 '., in. broad, some sheathing the 

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

 flexuous, bearing 20-30 fls. each 2K in. 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. H..M. 5980. 



5. macranthum, Lindl. (0.7i<)s/!7en«»n, Hort.). Pseudo- 

 bulbs ovoid or flask-shaped, 3 in. long: lvs. narrowly 

 lanceolate, acuminate, 1 ft. long : panicle climbing, 

 loosely branched and many-fld. : fls. 3-4 in. across; se- 

 pals 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. 24:416. 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 

 lubelliim. 



B. Fls. iiellow: column wings 



short . ,iiia,lr<ite 6. Marshalllanum 



BB. Fls. r, il-hrmeii: column wings 



ihtrn'ie, iiiiiiular 7. Forbesii 



BBB. Fls. dull brown, with yellow 

 markings, 

 c. Column wings small, truncate. S. eurtum 

 CC. Column icings large, sharply 



serrate 9. crispum 



A.\. Petals and dorsal sepals obo~ 



rule, cucullate, not clawed.. 10. comigerum 

 AAA. Petiils mill ilnrsal sepals sub- 

 siniiliir, reni small: label- 

 lum hirqer than the rest of 

 the floieer. 

 HB. Labellum white, spotted with 



rose-purple 11. cucuUatum 



BB. Labellum yellow. 



c. Blade bifid 12. Martianum 



i:!. flexuosum 



CC. Blade quadrifid 14. varicosum 



AAAA. Petals and sepals Irineeolafe, 

 oral. . ele.. iil Last nne-half 

 as h.11,1 as the lahi Hum and 

 of a iliffrreni farm. 

 B. Fls. lehile.spntted with purple.l5. Fhalaenopsis 

 BB. Fls. yellow or greenish, spot- 

 ted and barred with brown. 



c. Crest serrate 16. longipes 



CC. Crest a smooth, heart-shaped 



callus 17. dasystyle 



BBB. Fls. entirely yellow 18. concolor 



