184 ORGHIDES. pleurothallis. 



flavo-viridi, carinato ; floribiis 1— 3 , brevi - p«dicellalis ; pedunculo bracleis lilacino- 

 puberulis ornato; germine puherulo ; perigonii foliolis exterioribus 2 , intus pilosis 

 viridibus . liiacino striatis . membranaceis , supremo laiiceolato . acuto, altero e binis 

 lateralibus connnlo, ovato-orbiculnri , aculo , usque ad medium flsso , paullo convexo, 

 intus basi nertario excavaio instructo et labelio breviter connato ; foliolis interioribus 

 oblique oblongis, longe falcato-atienuatis . pellucidis trinerviis, nervjs inferne el apice 

 lilacinis , viridescenlibus , ereclis , exieriores aequantibus ; labelio multoties minori, 

 ovato-oblongo , obtuso , margine lenui-membranaceo albido medio utrinque in dentem 

 adscendentem producto . intus et extus apice airo - purpureo , intus canaliculato ; 

 columna intus profunde canaliculata , utrinque ad antheram in auriculam subtiliter 

 acuminaiam sursus curvatam apice lilacinam producta . pulchre lilacino 5-striata, glabra ; 

 anthera subrectangulari , pallide llavida . apice leviter lilacino bimaculata. 



— Typus Pleurothallidis nudae Rchb. fil. — 



69. PLEUROTHALLIS NUDA Rchb. fll. Mss. Huc : Restrepia vittata Lindl. Journ. Hort. 

 Soc. III. 1848. 314 c, xyl. Ex Columbia Linden : petalis a lata basi ciliaia Blifor- 

 mibus recurvis , labelli ciliati convexi laciniis latcralibus minimis oblusiusoulis. One 

 oblong leathery leaf, which is rather shorter than the terete spoited siem. The flowers 

 grow singly on a slender erect stem , aboui half the length of ihe leaf. Sepais are 

 white , and the lower somewhat boatshaped ; the petals are spotted with deap rose, 

 exlended into a long slender process as long, as tlie dorsal sepal, and turned bacli- 

 wards. The lip is duU yellow , striped with deep rose , shorler than ihe double an- 

 terior sepal , and blunt. 



Huc : Restrepia nuda Kl. in Otto et Dietr. Allg, Grtz. p. 275: 2S. Aug 1 1852; cauli- 

 bus secundariis caespitosis , basi vaginatis teretibus , fol. carnosis solitariis aculis 

 planis versus basin atlenuaiis , floribus pedunculatis paucis nudis, perigonii foiiolis 2 

 candidis rubro-striatis elongato - lanceolatis, acuminatis , supremo trinervio , inferne 

 4 nervio, interioribus basi lanceolalo dilatatis candidis. margine denticulaiis , dorso 

 acumineque setiformi , purpureis; labello purpureo elongato-obovato acuminato magno 

 fimbriato ima basi auriculato; gynostemio clavato. 



Huc: Vleurothallis liemivlwda Lindl. in Paxt. Fl. g. III. 612 (Novb.). Restrepia vit- 

 tata Lindl. J. H. S. IH. 315 c. xyl. No positive difl^erence appears to exist. between 

 ihe genera Pleurothallis and Restrepia except ihat the lormer has 2 and ihe latter 4 

 pollen masses. Usually however the latter have solitary , handsome, highly coloured 

 flowers and a [lair of ears at the base of the lip, and jjiidging Irom this alone, we 

 referred the present plant to Reslrepia. But having now had the opporiuni ty of 

 examining the poUenmasses , we find tbat it is a true Pleurothallis, to which genus 

 we are obliged 1o reler it, necessarily changing the speciflc name , because there is 

 already a Pl. viiiata from .Mexico. 



70. PLEUROTHALLIS GRATIOSA Rchb fll. in Bonpl. IL 25 : caule secundario elongalo, 

 folio oblongo basi subcuneato , apice angustaio , acuto . bi - tridentalo , pedunculo 

 gracili longiarliculaio . cum ovario pediccllato folium subaeqiiaiiie . sepalis ab ovata 

 basi lanceoacuminatis subaequalibus , inferiori ex duobus omnino coalilo , lepalis 

 linearisetaceis carnosulis , subacquilongis , labello sepalis quiiiquie» breviori , orbi- 

 culato , basi humerato, utrinque setaceofalcato , setula dimidiae laminae latitudini 

 subaequali . disco carnoso tricarinato , margine puberulo. limbo ciliato, gynostemio 

 gracili , androclinio subcucullato posiice unideniato. Restrepiis subsimilis, qnae polli- 

 niorum numero diversae. In liac quid<*m specie pollinia non vidi, inde Restrepia forsan 

 eril. Caulis secundarius basi Inxc vagiiiatus. tum liber . prope tros pollicesj altus. 

 Folium tres |iollicps longum, medio diios pollici's latum. PediccHus lenuis, sesqui- 

 pollicaris. Ovarium cum pednnculo prope pollicare. Sepala subaequalia, sex lineas 

 longa , apice angustata , iiivea , maculis purpureis in basi. Caracas 6000'. Mailio. 

 Wagener. Rchb. fll. Xenia Orchidacea Tab. 28. pag. 71. 



71. PLEUROTHALLIS ASPASICENSIS Rchb, fll. in Bonpl. III. 73: similis „Pleurothallidi 



