in our gardens, it seems desirable to amend the generic cha- 

 racter, and to bring together all that is now known concern- 

 ing them. 



ZYGOPETALUM. 



{Hooker, in Bof. Mag. t. 2/48. Liridl. Orch. no. 113.) 



Perianthium explanatura, sepalis petalisque ascendeutibus, subaequalibus, 

 cum ungue producto columnse connatis. Labellum muticum, planum, 

 iudivisura, patens, ungue ascendente : crista magna transversa carnosa. 

 Columna brevis, arcuata, marginata, seepius utrinque subdilatata, nunc 

 in cucullum expansa. Anthera subbilocularis carnosa, nunc vertice 

 rostrato. Pollinia 2, bipartibilia, in glandulam trausversam subsessilia. 



Herbse terrestres, subacaules, foliis plicatis patentibus. Flores 



speciosi, suaveolentes, labello ccerulescente. 



1. Z. MacJcaii (Hooker. Bot. Mag. t. 2748. Lod. Bot. Cab. t. I6G4. Eulo- 



fhia Mackaiana, Lindl. in Bot. Reg. t. 1433.) ; foliis lorato-lanceolatis 

 striatis apice recurvis racemo brevioribus, sepalis petalisque oblongo- 

 lanceolatis acutis, labello obcordato glaberrimo, callo crassissimo bilobo. 



Brazil. Known from aU the genus by its blue-veined perfectly 



smooth lip, and two-lobed crest. The blotches on the sepals and petals 

 are somewhat smaller than in the other species. 



2. 7i. intermedium (Lodd. Cat. no. 113G. Z. velutinnm, HofFmannsegg in 



Bot. Zeit. 1. 835.?); foliis ensiformibus racemo brevioribus, sepalis 

 petalisque oblongis acutissimis, labello subrotundo uudulato basi angus- 



tato alte bilobo pubescente, callo crenulato indiviso. Brazil. 



This is generally confounded in collections with Z. Mackaii, from which 

 it is readily known by its downy labellum. It is perhaps the finest of 

 the genus- 



3. Z. brachypetalum ; foliis ensiformi-lauceolatis scapo elato multifloro bre- 



vioribus, sepalis petalisque oblongis obtusis, labello transverso sub- 

 rotundo emarginato basi vix angustato pubescente, callo integerrimo. 



Brazil. -Flowers most like those of Z. intermedium, but less 



than half the size. The sepals and petals are short, stiff, convex, and 

 hardly acute, very much more brown than green, in consequence of the 

 blotches running together. The lip is entirely covered with blue veins 

 and spots, firm, hardly at all narrowed to the base, and very little 

 emarginate. I received it from Mi\ Waterhouse, of Hahfax, in Decem- 

 ber, 1840. 



4. Z.crinitum (Lodd. B. Cab. t. 1687. Bot Mag. t.3402. Z.pubescens, Hffsgg. 



in Bot. Zeit. I. 835. ?) ; fohis lato-lanceolatis, bracteis cucullatis, sepahs 

 petalisque Uneari-lanceolatis acutissimis, labello obovato emarginato basi 

 longe angustato venis villosissimis, callo angusto incurvo emarginato. 



. Brazil. There are varieties of this with pink, blue, and almost 



colourless veins to the hp. They all agree in having those veins quite 

 shaggy, and a lip which, instead of being broader than long, narrows 

 very sensibly towards the base. From the manner in which Count 

 Hoffmannsegg describes his Z. pubescens, " with the tracery of the lip 



