67 • 



In addition to these we have a plant in cultivation, disco- 

 vered by Mr Hartweg in Guatemala, the habit of which is 

 exactly that of a Peristeria, but which has the lip not only 

 articulated in the middle but also with the column, and has 

 the caudicle and gland of Lycaste, from which it differs, inde- 

 pendently of habit, in having two pollen-masses and not four. 

 To this plant I propose to give the old classical name of 

 Lacaena, which the incision between the upper and lower half 

 of the lip renders applicable. 



The following will be the technical characters of the plants 

 to which these observations apply. 



Peristeria. Hooker Bot. Mag. 3116. Perianthium globosum. Sepala 

 basi connata concava. PetaJa conformia, pauld minora. Labellum cum 

 columna continuum, epichilio carnoso incumbente indiviso cum hypo- 

 chilio sagittato leviter articulato. Columna erecta, semiteres, aptera, c. 

 hypochilio continua. Anthera ecristata, bilocularis. Pollinia 2, postice 

 fissa, in glandulam linearem sessilia.— — Herbse subterrestres, pseudo- 

 bulbosae. Folia plicata. Scapi vaginati, radicales, multiflori. Flores 

 speciosi. 



1. P. elata (Hooker in Bot. Mag. t. 3116); scapo erecto orgyali, racemo 

 laxo elongato, epichilio rotundato serrulato medio elevato calloso, hypo- 

 chilio maximo lobis obtusis disco unidentatis columna longioribus.— — — 



Panama. Flowers white, with lilac specks on the base of the lip, 



very sweet-scented. Stem sometimes six feet high. 



2- P. pendula (Hooker in Bot. Mag. t. 3479. P. maculata, Hort.) ; scapo 

 brevi pendulo, racemo denso, epichilio rotundato integerrimo supra bi- 

 lamellato, hypochilio elongato lobis rotundatis callo maximo lunato in 



medio, columna bicorni, rostello truncato. Demerara. Flowers 



pale purple, spotted with lilac, with a scarcely pleasant aromatic odour. 



3. P. guttata (Knowles & Westcott, Floral Cabinet, t. 70); racemo brevi 



denso pendulo, epichilio rhombeo'-oblongo serrulato leviter verrucoso, 



hypochilio brevi lobis acutis, columna mutica, rostello brevi.' Demerara. 



Flowers deeply speckled with brownish purple, on a pale dingy 



ground, rather agreeably sweet-scented with an aromatic resinous odour. 



4. P. cerina (Lindl. in Bot. Reg. t. 1953.) ; scapo brevi pendulo, racemo 



denso, epichilio ovato emarginato crispo serrulato, hypochilii lobis bre- 



. vibus acutiusculis, columna mutica, rostello truncato.- Central America. 



Flowers yellow, unspotted, with the smell of bruised juniper leaves, 



only more aromatic. 



100. ACINETA. 



Perianthium carnosum, patulum, sepalis basi connatis supremo subascendente. 

 Petala conformia, paulo minora. Labellum cum columna continuum, 

 carnosissimum, hypochilio oblongo concavo, epichilio haud articulato tri- 

 partite ascendente, basi appendice carnosa aucto. Columna erecta 

 utrinque in marginem latum rotundatum producta. Anthera ecristata, 

 bilocularis. Pollinia 2, postice sulcata, caudicula lineari, glandula lu- 



nata. Herbse Peristeriee habitu. 



tf— 1843. * 



