10 



scarcely at all verging upon blue, and having a broad white margin," 

 I presume he must have had in view some variety, perhaps the pink one, 

 of this. 



5. Z. stenochilum (Lodd. Bot. Cab. t. 1923.) ; foliis latioribus racemo sequa- 



libus V. longioribus, sepalis oblongis acuminatis, petalis brevioribus 

 duplo angustioribus, labello angusto oblongo obtuso villoso, callo emar- 



ginato. Brazil. Of this very distinct species the sepals are 



blotched, and somewhat striped with brown. The lip is white, with 

 blue or violet veins in the middle only. Its small petals and very narrow 

 lip readily indicate it. 



6. Z. maxillare (Lodd. Bot. Cab. t. 17/6. L. no. 2. Bot. Mag. t 3686.) ; 



foliis lineari-lanceolatis undulatis acuminatis racemo flexuoso longiori- 

 bus, sepalis petalisque ovato-oblongis acutis, labello glabro obovato, 



crista unguhformi maxima crenata. Brazil. Sepals and petals 



green, with blotches and broken bands of chocolate brown. Lip violet, 

 with a deep blue bridge. According to Mr. Gardner this species always 

 occurs on Tree-ferns. 



7. Z. Murrayanum (Hooker in Bot. Mag. t. 3674.) ; pseudobulbis ovatis pro- 



funde sulcatis, racemis foliis brevioribus, sepalis petalisque ovato-lauceo- 

 latis, labelli 3-lobi lobis lateralibus ovatis. crectis intermedio ovato- 



lanceolato reflexo glabro, callo integro sulcato. Brazil. A species 



of little beauty. The sepals and petals are pale green and unspotted. 

 The lip is white, with some dark claret-coloured spots at the base. Itf 

 was found on the Organ Mountains, "at the height of about 4000 feet 

 above the sea." 



8. li. graminemn ; foliis lineari-lanceolatis, scapo subunifloro capillari brevi 



ascendente, vaginulis laxis una in medio duabus sub pedicello, labello 

 subrotundo fimbriato tenui supra basin appendicibus 2 ovato-lanceatis 

 acutis aucto. Flores 3 Z. Murrayani magnitudine, magis membranacei. 



Scapus 2-pollicaris. Folia spithameea. Popayan ; in woods rare. 



This is much smaller than the other species, and is the only one 



yet found west of the Andes. It is not in cultivation. 



9. Z. cochleare (Lindl. in Bot. Reg. t. 1857.) ; foliis obovato-oblongis pe- 



dunculis unifloris multo longioribus, sepalis petahsque ovato-lanceolatis 

 conniventibus inferioribus multo majoribus, labello cochleato subrotundo 



bilobo velutino, crista arcuata crenata, anthera ecristata. Trinidad. 



Leaves unusually broad in this genus. Flowers pure white, except 



the lip, which is of a rich lapis lazuli blue, and very fragrant. Remark- 

 able in this genus for its solitary flowers. 



10. Z. rostratum (Hooker in Bot. Mag. t. 2819.) ; foliis lato-lanceolatis 

 patentibus scapo paucifloro longioribus, sepalis petalisque lineari-lanceo- 

 latis undulatis acuminatis, labello subrotundo-ovato, callo baseos lunato 



crenato, columna apice cucullata dentata, anthera rostrata. Deme- 



rara. The broad short leaves of this plant readily distinguish it. 



The sepals and petals are greenish, dashed with purple, but not at all 

 blotched. The lip is white, with a violet crest, and a few pink radiating 

 lines. It has no scent. 



