G7 



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

 vered bv Mr HartwefT- 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 

 Laca3na, 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. Petala conformia, paulo minora. Labellum cum 

 columna continuum, epicliilio carnoso incumbente indiviso cum hypo- 

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

 liypochilio continua. Anthera ecristata, bilocularis. Pollinia 2, postic^ 



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



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

 speciosi. 



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



laxo elongate, epichilio rotundato serrulato medio elevato calloso, liypo- 

 chilio maximo lobis obtusis disco unidentatis columna longioribus. 



Panama. FloM^ers white, with lilac specks on the base of the lip, 



very sweet-scented. Stem sometimes six feet high. 



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



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

 lameUato, liypochilio elongate lobis retundatis calle maximo lunate in 



medio, columna bicorni, rostello truncate. Demerara. Flowers 



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



3. Y. guttata (Knewles & Westcett, Floral Cabinet, t. 70); raceme brevi 



denso pendulo, epichilio rhombeo-oblongo serrulato leviter verrucose, 



liypochilio 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. ceritia (Lindl. in Bot. Reg. t. 1953.) ; scapo brevi pendulo, raceme 



denso, epichilio ovate emarginato crispo serrulate, hypechihi lobis bre- 



vibus acutiusculis, columna mutica, rostello truncate. Central America. 



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



only more aromatic. 



100. ACINETA. 



Perianthium carnesum, patulum, sepalis basi cennatis supremo subascendente. 

 Petala conformia, paulo minora. Labellum cum columna continuum, 

 carnosissimum, hypochilio oblongo concave, epichilio hand articulate tri- 

 partite ascendente, basi appendice carnosa aucte. Columna erecta 

 utrinque in marginem latum rotundatum producta. Anthera ecristata, 

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

 nata. Herbae Peristerise habitu. 



X— 1843. » 



