TIHG0N[D1L'M. 



ORGHIDES. 503 



Foliis obovato-oblongis, vaginis acuminatis suprema ovario longiore, 

 sepalis lanceolatis aculiusculis, petalis aculis , (labelJo dorso nudo?), 

 anthera glabra, 



Epidcntlre a chninons. Descoiiililz Brazil. drawings Nr. 33. 



On tlie trees , ihat surrouiul ihe foot of the mountain of La Bucanha and on tlje 

 borders of the Parahjba, below the town of Regende. Jan. Descourtiiz. 



2. TRIGONIt)IUM EGEHTOMANUM Batem. in litt. Lind!. Bot. Reg. XXIV. 1838. Misc. 138 : 

 Pseudobulbis ovalibus compressis sulcalis diphyllis aggregatis , foliis 



ensifoimibus pedunculis subaequalibus vel brevioribus, sepalis ovali- 



lanceolatis acuLis (laleralibus reflexis), pelalis lineari-lanceolatis acutius- 



culis apice callosis , labello trilobo medio calloso petalis triplo breviore. 



,, A native of the Day of Dulcc in Honduras, whcre it was liiscovered by G. U. 



Skinner Esq., to Avhom J ara indebted for its possession. It is a very distinct speices 



of a most singular genus , and J have iherefore not hesitated to name it after Sir P. 



de Grey Egerton Bart. It approaches nearest to T. obtusuni, from which its acute pe- 



tals and narrow leaves (frequently 1'ully a foot and a half long) and clustered 



pseudobulbs abundantly distinguish it. Its flowers are of a pale liver-colour , dashed 



and veined with brown and from a resemblance with they have supposed to bear a 



„Dragon's mouth" the plant has received that appellation from the inhabitants of 



Honduras. It is of the easiest cultivation."' 



3. TRIGONIDIUM OBTUSUM Lindl. Bot. Reg. XXIII. 1837. 1923: 



Foliis lineari-lanceolatis, vaginis acutis, sepalis obovatis, petalis ob- 

 tusis, labello dorso tuberculato , anthera glanduloso-pilosa. 



Anthera glandulis piliformibus cristata. Sepala rubido luteola. Petala alba, roseo 

 venosa, apice brunnca. Labellum album. Lobi iaterales raargine rubri, medius lobus 

 antice flavus. Demerara Colley. 



4. TRIGONIDIUM SEEMANNI Rchb. fll. in Seemann Herald. Bot. 214 : 



Pedunculo prope pedali subflexuoso pluri (7) vaginato, vaginis arctis 

 apicibus in basibus superioribus imbricantibus , sepalo summo a basi 

 ligulato cuneato, dimidio superiori abrupte ovali acuto, sepalis latera- 

 lil)us cuneato oblongis acutis, apice reflexis, tepalis ligulatis acutis, basi 

 attennatis, apice (ex lateribus involutis) cucullato incrassatis , quam se- 

 pala dimidio brevioribus, quintam illorum latitudinis partem aequan- 

 tibus, labello ligulato Irilobato , lobo medio subcordato acutiusculo, per 

 tolam paginam callosulo, lateribus suis posticis incisuras loborum late- 

 ralium tegente, lobis lateralibus relusissimis incisuras illis minulis elTor- 

 matis, nervis labelli mediis longitudinaliler carinulato incrassaUs, gyno- 

 stemio postice apice acuto, anthera .... 



Sepalo supremo , lepalis nc labello recedit ab affinibus T. obtuso Lindl. ac T. 

 Egertoniano Bat. IIujus tamen descriptio valde manca. Rara videtur, cuni inler copiam 

 Orchidearum centro-americanam, quam teneo, haud amplius occurrat. Panama 539. 



5. TRIGOiNIDIUM SPATULATUM Lind , Rchb. fil. Bpl. II. 380: 



Affine T. Seemanni tepalis apice in disco callosis, labelli callo per 

 loborum lateralium medium lineari apice dilatato retuso, disco lobi medii 

 carnoso. 



Pseudobulbus ovnius anceps. Folium late ligulntum ociopollicnre, Pedunculus 

 spitharaaeus lenuis Trigonidii acuminati. Sepaluni impar a basi lipulata ovatum acu- 

 tum. Sepala lateralia oblongolanceolata acuta. Tepala tres quintas illorum longa 

 lanceolata acuta sub apice in disco carnosa. Labelluni angustum tepnlorum dimidio 

 aequale ligulalum. concavum, ajiice utrinque angulatum trilobum, lobus medius trans- 

 versus seniiovatus aculiusculus, apicc rellexus. — Blatter ."o gross , wie die des Tri- 



