ZYGOPETALUM 



zomes. like /. nitifillare. thrive best on sections of tree 

 fern, osmumUi rhizome or in baskets. A good compost 

 consists of ciiiail 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 devoted to clean drainage material. After 

 distributing the roots, the compost should ],< worked in 

 carefully but not too firmly about them, leaving tin- 

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

 the pot. Repotting should be done when the plants 

 show new root action. The temperature should range 

 about 60 P. by night and 65 to 70 by day in winter, 

 and in summer as low as possible, with free ventilation 

 during inclement weather. A cool, light location in the 

 cattleya department is favorable. The compost should 

 be kept in a moist condition at all times. The plants 

 are propagated by cutting through the rhizome between 

 the old pseudoliulbs at a good eye, potting up the parts 

 and removing them to a rather higher temperature un- 

 til they start into new growth. 



The Batemannia, Pescatoria and Warczewiezella 

 groups are very similar in habit of growth, and all 

 thrive well in orchid baskets suspended from the roof 

 of the odontoglossum or coolhouse, in a compost con- 

 sisting almost entirely of chopped live sphagnum, 

 freely interspersed with rough pieces of charcoal. Au- 

 tumn is the best time to rebasket the plants, as they 

 suffer during Hie warm weather if disturbed <t 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 Bollea group is closely allied and requires the 

 same general culture but needs 5 F. higher tempera- 

 ture during the winter season. 



The Promenasa 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. g jj_ QREY. 



ZraOPBTALUM 



2015 



dingy yellowish given, with htot.-ln- ,,f ,,., 

 Inside, lanceolate, acute, ere.-t. spreading, all mi 



the 



Tln> is distinguished from /. 

 erinitttm by its smooth labellnm and IK, 

 Vurs. sup6rbum. grandilldnim, majus 

 tlaed. 



3. Qautteri, hem. I'-eudobulbs oblong -ulrntf 4 in 

 high: scape _'-;{- tld. : Us. :t in. across; s,.,, a i - 



men blotched with brown; lnbeiluin bnmdh r .-i, 

 deep purple at the base, white in froid. 

 nearly all deep purple with a darker .T. -t. AI.' 

 Hray.il. I.M. U :.-,:{.-,. < in. 4!l: HI:,:;. - The lv>. are f : , - 

 late, narrowly oblong, keeled, 1'J Hi in. long: ii 

 o-nce shorter than the l\s. 



4. maxillare, Lodd. Pseudobulbs 2 in. long: lv. 



lanceolate, 1 ft. long: scape '.I in. long. 1,-c Hd. : ]! 

 in. across: sepals and petals ovate oblong, acute. . 

 with transverse brown blotches; labellum hori. 

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



shoe-sliaped crest, middle 

 lobe roundish, waved, and 

 obscurely lobed. Winter. 

 Brazil, 'l: !. I', r. 



I*:177;. .1.11. III. 

 I' M I -T! IHstingnisheil 

 by its small H*. ntid very 



large crest 



Burtii, 12. 

 eoeleste, 9. 

 eseruleHm, 5. 

 crinituui, 5. 

 discolor, 13. 



INDEX. 



Gautieri, :f. 

 intermedium, 6. 

 Lalindei, 11. 

 Mackaii. '_'. 

 maxillare, 4. 



A. Sctipr lull, .irwr!-fld. 



B. Anther lony-roxtmt? 1. 



BB. A nther not rostra t? 



c. Pftdls spotted jr blotched. 



D. Labellum glabrous 2. 



3. 

 4. 



DD. Labellum pubescent 5. 



6. 



CC. Peta Is a n itortn ly colored 7. 



AA. Scape shorter than the Ivs., 1-fld. 

 B. Column hood-like, arching over 

 the crest. 



c. J< J ls. deep violet 8. 



cc. Fls. violet-purple 9. 



ccc. Fls. rose-colored 10. 



11. 

 BB. Column not hood-like. 



c. Fls. broicn, spotted 12. 



CC. Fls. white or greenish white... 13. 



14. 



1. rostratum, Hook. Pseudobulbs oblong, compressed: 

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

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

 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. May, June, 

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



2. Mackaii, Hook. Fig. 2799. Pseudobulbs large, 

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

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



127 



Patini, 10. 

 rostratum, 1. 

 Sedeni, 7. 

 violaceum, 8. 

 Wendlandi. 14 



2799. Zygopetalum 



Mackaii (X %). 



:,. crinitum, Lodd. Habit of /?. intermrditim: lv. 

 broadly linear-lanceolate: rts. on long, stout scapes; 

 sepals and petals 2 in. long, oblong -lanceolate, green 

 with rather few brown blotches; labellum '_' in. noroM. 

 spreading, wavy, scarcely emarginate. white with purple 

 veins radiating from th'e thick crest, disc hairy. 

 at various times. Mra/.il. L.B.C. 17:1C,:',7. M-M 

 IMS /.. M.i,-k'iii, var. crhiitnni \ . -Tins has f, wer brown 

 blotches on the sepals and petals than /.. i 

 There are varieties with pink. bin.-. r almost pol 

 veins on the labellum. Var. coeruleum, BOrt., has the 

 vines deep vivid blue. 



