ZYGOPETALUM 



zomes, like Z. maxilhire, thrive best on sections of tree 

 tern, osmunda rhizome or in baskets. A good compost 

 consists of equal parts of chopped sod, peat liber and 

 sphagnum moss, well mixed and interspersed with 

 pieces of rough charcoal, about one -half of the pot 

 space being ilevoted to clean drainage material. After 

 distributing the roots, the compost should be worked in 

 carefully but not too firmly about them, leaving the 

 base of the plant even with, or just above, the rim of 

 the pot. Repotting should be done wluii tin- |ihints 

 show new root action. The tempt'r;ituir >li.inM r:uise 

 about 60° F. by night and C5° to 711" hy .l;i\ in uiiili-r, 

 andin sumni.-i- as low as possible, ivith In , ^r,,Ill^,tion 



cattleya ■!. i ' i ' ' • : ■ • ' ^" ' ' ■ I' '• ■■ ' ^'"■nl'l 



be kept i ■:•.•:• ..i M ■ i nuts 



are propa^.i: ■.., : .i,_ : .i : • -i^ .. . '.■ : !. " ■ '■ ! .^'■'■T1 



the old psru.li.t.ull..^ u! a u '■.'•[ vy . l>"!llii;; up Hi' |i:tlts 

 and removing them to u rather liiglu-r temperature un- 

 til they start into new growth. 



The Batemannia, Pescatoria and Warczewiczella 

 groups are very similar in habit of growth, and all 



of the odontoglossuni or eoolhoii-e, in a eomiM-t eou- 



freely interspersed with rou^'h pieces ot cliareoal. Au- 

 tumn is the best time to rebasket tlie plants, as tliey 

 suffer during the warm weather if disturbed at the 

 roots during spring. They need a shaded location, a 

 moist atmosphere and a liberal supply of water at the 

 roots at all seasons. Never allow them to remain dry, 

 as they have no resting season. 



The BoUea group is closely allied and requires the 

 same general culture but needs 5° F. higher tempera- 

 ture during the winter season. 



The Promenfea group comprises a few small-growing 

 species, all good subjects for the cool department. 

 They grow best suspended from the roof in small bas- 

 kets or perforated pans in a mixture of peat fiber and 

 chopped sphagnum with a liberal supply of water and 

 good drainage. R. Ji. Grey. 



INDEX. 



Bnrtii, 12. Rautieri. 3. Patini, 10. 



cceleste, 9. intermedium. 6. rostratuin, 1. 



o»rulenra, B. Lalindei, 11. Sedeni, 7. 



crinitum, 5. Mackaii, 2. violaeeum, 8. 



discolor. 13. maxillare, 4. Wendlaudi, 14. 



A. Saipe tall, several-f!d. 



B. Anther long-rostrate 1. rostratum 



BB. Anther not rostrate 



c. Petals spotted or blotched. 

 1). Labellitm glabrous 2. Mackaii 



3. Gautieri 



4. maxillare 

 DD. Labellum pubescent 5. crinitum 



6. intermedium 



cc. Petals uniformly colored 7. Sedeni 



AA. Scape shorter than the Irs., 1-fhl. 

 B. Column hood-like, arching over 

 the crest. 



c. Fls. deep violet 8. violaeeum 



cc. Fls. violet-purple 9. coeleate 



ccc. Fls. lose-colored 10. Patini 



11. Lalindei 

 BB. Column not hood-like. 



0. Fls. brown, spotted 12. Burtii 



cc. Fls. white or greenish white .. .V.i. discolor 



14. Wendlandi 



1. rostriltum, Hook. Pseudobulbs oblong, compressed: 

 Ivs. lanceolate, 5 in. long: scapes 4 in. long, bearing 

 1-3 fls.: sepals and petals linear-lanceolate, greenish 

 brown, wavy, 2-3 in. long; labellum about as long as 

 the petals, subrotund, with reflexed margins, pure white 

 with few radiating lines near the base: column wings 

 rounded, sharply serrate on the upper margin : anther 

 with a long beak surmounting the column. Mav, June, 

 Oct. Guiana. B.M. 2819. J.H. III. 28:7. A.F. 6:633. 



2. M&ckaii, Hook. Pig. 2799. Pseudobulbs large, 

 ovate: Ivs. many, linear-lanceolate, 1 ft. long: scape 

 18 in. long, bearing 5 or 6 large fls. : sepals and petals 



127 



ZYGOPETALUM 



2015 



dingy yellowish green, with blotches of purple on the 

 inside," lanceolate, acute, erect, spreading, all united 

 toward the base; labellum large, rounded, emarginate, 

 white with radiating vein-like deep blue lines, glabrous. 

 Brazil. B.M. 2748. B.R. 17:1433 (as Dulophia Mack- 

 aiana). P.M. 3:97. L B.C. 17:1664. J.H. III. 33:295. 

 — This is distinguished from Z. intermedium and Z. 

 crinitum by its smooth labellum and narrower Ivs. 

 Vars. superbum, grandifldrum, m4ju8 are also adver- 

 tised. 



3. QautiSri, Lem. Pseudobulbs oblong sulcate, 4 in. 

 high: scape 2-3-fld.: fls. 3 in. across; sepals and petals 

 green blotched with brown; labellum broadly reniform, 

 deep purple at the base, white in front, sometimes 

 nearly all deep purple with a darker crest. Autumn. 

 Brazil. I.H. 14:.53r). Gn. 49:1053. -The Ivs. are fascicu- 

 late, narrowly oblong, keeled, 12-16 in. long: inflores- 

 cence shorter than the Ivs. 



4. maxillire, Lodd. Pseudobulbs 2 in. long: Ivs. 

 lanceolate, 1 ft. long: scape 9 in. long, 6-8 fld.: fls. IJ^ 

 in across: sepals and petals ovate-oblong, acute, green, 

 with transverse brown blotches; labellum horizontal, 

 purple, with a very large, glossy-purple, notched horse- 

 shoe-shaped crest, middle 

 lobe roundish, waved, and 

 obscurely lobed. Winter. 

 Brazil. H.M. 3686. L.B.C. 



J.H. III. 33:295. 

 '71.— Distinguished 

 small fls. and very 



Lodd. Habit of Z. intermediu 

 broadly linear-lanceolate- fls. on long, stout 

 sepals and petals 2 in. long, oblong lance ..Lite 

 with rather few brown blotihc ^ I 1 II ii i _ in 



till. I 



(as Z. Mackaii, var. crinitum I — 1 his li.is ic vm 

 blotches on the sepals and petals than Z. intern 

 There are varieties with pmk, blue, or almost c 

 veins on the labellum. Var. coeritleum, Hort., 

 vines deep vivid blue. 



\ Fls. 

 \I. 3402 

 r brown 



