Tab. 39. A. 
IONOPSIS UTRICULARIOIDES. 
Nar. Orv. Orchidee ; Tribus Vandee. Linn. Syst. Gynandria Monandria. 
IONOPSIS, Kunth in Humb. ct Bonpl. Nov. Gen. et Sp. Pt. 1. 348. (lantha, Hooker Exot. Fl. t. 113.) Pollinia 
2 cereacea postice sulcata: caudiculé lineari tecté; glandula obovata. Anthera terminalis opercularis decidua J -lo- 
cularis rostrata. Stigma obcordatum excayatum : rostello cuspidato. Columna aptera semiteres. Labellum se- 
palis multo majus, basi calcaratum: ungue bicalloso columna parallelo. Sepala conniventia : duobus exterioribus 
lateralibus basibus approximatis cum basi labelli connatis.—Herbe epiphyte (Americe eequinoctialis ) non bulbose ; 
foliis enervibus ; scapis terminalibus ; floribus pallidis paniculatis. 
4 
Tonopsis, foliis lanceolatis discoloribus, scapo paniculato multifloro, labello bilobo cuneato : calcare integro. 
Epidendrum utricularioides. Swartz. Prodr. 122. 
Dendrobium utricularioides. Swartz. Nov. Act. Ups. 6. p. 83. 7lld. Sp. Pl. 4.133. Pers. Syn. 2. 522. 
Descr. Herba parasitica acaulis. Folia circiter 4, disticha, lanceolata, subcomplicata, coriacea, subenervia, discolora, scapo 
breviora, cum basibus suis articulata. Scapus erectus, filiformis, teres, biramis, coloratus, glaberrimus. Panicula flexuosa, pau- 
ciflora, floribus erectis, albis, rubido tinctis. Bractee minima, ovate, sphacelate. Ovarium teres, subangulatum, basin versus 
attenuatum. Perianthium connivens, sepalorum exteriorum superiore recto, parvo, oblongo, obtuso, lateralibus labello suppo- 
sitis et suboccultis, carinatis, antice basibus saccatis approximatis cum basi saccato labelli connatis; interioribus obtusis, erectis, 
oblongis, superiore paulo longioribus, margine altero sepalo superiori appresso, altero labelli ungui extus adherente. Labellum 
sepalis multo majus, limbo albo cuneato bilobo patente, ungue plano basi saccato, facie: columne applicito, subbarbato, in 
medio callis duobus conicis subincurvis. Colwmna ungue labelli duplo brevior, semiteres: st7gmate excavato sursim repando, 
feré totam faciem columne occupante. Anthera terminalis, opercularis, decidua, 1-locularis, subcarnosa, antice in rostro brevi 
obtuso producto. Pollinia 2, globosa, postice biloba : caudicula plana, oblonga, glandule obovate brunnee stigmatis affixa. 
RETA oa aI 
This plant is a native of the West Indies. Our drawing was made from an individual which flowered in a stove 
in the Horticultural Society’s garden at Chiswick, in May 1824. It had been sent to the Society by His Excellency 
Sir R. Woodford the Governor of Trinidad. ; : 
When the genus Jonopsis was proposed by M. Kunth, one certain species only was known ; and from the cha- 
racter attributed to it from an examination of dried specimens, it appeared nearly related to Oncidium, to which 
in fact it was subsequently referred by Dr. Meyer. It proves however, upon a view of living plants, to be a very 
curious and distinct genus, differing from Dendrobaun and its allies in having a calcarate labellum and only two 
pollen masses, and from all the calcarate Vande, in the union of the front sepals with the labellum. 
Besides the subject of this article and the Jonopsis pulchella of Kunth, we believe the Dendrobium testiculatum 
of Swartz is referable hither. The Jantha pallidiflora of Professor Hooker is represented with flowers so much 
larger than those of J. utricularioides, that it is not safe to quote it as a synonym. ‘ 
EXPLANATION OF THE PLATE. 
1. A flower seen Jaterally. 2. The stigma and anther, 3. The pollen masses and appendages. 
