504 ORCHIDES. 



THIGONIDIUM. 



gonidium obiusum. — Neu-Granada : Provinz Ilio Ilacha: ira Gebiigo. Schlim. — Uos 

 UDs unbekannte Trigonidium Egerionianum Bat. hai sehr iange schmale BlaiiiM-. 



6. TRIGONIDIUM ACUMINATUM Bateman in liit. Lindl. Bot. Reg. XXIV. 1838. Misc. 136 ; 

 Pseudobulbis ovatis acutis sulcalis monojDhyllis , foliis linearibus pe- 



dunculis longioribus, sepalis acuminalis apicibus recurvis, petalis ovali- 

 lanceolatis mucronatis, labello trilobo petalis duplo breviore. J. Bat. 



,,Found in Dcmcrara by M. Colley and olhcr collectors. It is a small ihough inter- 

 esling species. Tiie Ilowcrs are of a dull straw-coiour externally but are most ele- 

 gantly pencillcd on the inside wiih a rich brown. The petals in this, as in all the 

 olher species;, have each a dark- coloured callosiiy at tlieir ape.\, which is placed 

 in such a manner near ihe eniraiice of ihe triangular cup , whicb the scpals form, 

 that the appearance of a pair of eyes peeping oui is produced.'* J. B. 



7. TRIGONIDIUM TENUE Lodd. cat. no. 582. Bot. Reg. 1839. XXV. Misc. 59 : 



Pseudobulbis ovalibus compressis monopbyllis, folio ensiformi acutis- 

 simo scapo erecto tenui lon.§iore, sepalis reflexis acuminatissimis, labello 

 oblongo obluso trilobo glabro apice reflexo medio appendice plano ob- 

 ovato emarginato adnato aucto. 



A brownish jmrple species with a slender habii iotroduced from Demerara by 

 Msrs. Lodd, with whom it flowered. 



b. 



8. TRIGONIDIUM RINGENS Lindl. Bot. Rcg. XXVI. 1840. Misc. 12'^ : 



Pseudobulbia compressis subrolundis, foliis oblongis recurvis coria- 

 ceis nitidis, scapo filiformi stricto distanter vaginato foliorum longitu- 

 dine, perianthio bilabialo, sepalo postico arcuato petalisque oblongis 

 margine revolutis labium superius laleralibus oblongis apice obluse 

 carinatis inferius formantibus , labelli trilobi nani ciliati pubescenlis 

 lobis lateralibus dentiformibus, intermedio revoluto in medio lucido basi 

 callo reniformi antice obsolete tridentato aucto, columna pubescenle. 



Forms densc patchcs of flne vigorous dccp green pseudobulbs and leaves promising 

 soniething much better, tban the iittle insignificant scentless yellowish-grecn llower. 

 vvhich they produce. The lalter stands singly at the end of a very slendcr erect 

 scape, and disiinclly divided into two lips. The labellum is very flnely downy, 

 ciliated at ihe edges and slightly bearded along four of the veins near its base on 

 Ihe upperside. The column is nioreover downy, and has a small collection of minule 

 shining hairs near its base. Introduced from Mexico by Hartweg. but had been pre- 

 viously discovered in shady places in the Barranca de Tioselo .by Schiede whose 

 Mss. descript logelher wiih a specimen has been obligingly comni. me by Prof. 

 Schlechtendahl and is hcre subjoined. 



Cf. Walp. Ann. III. 541. Cf. Lindl. in Pa.\i. Fl. G. III. p. 61. Gleaning 533. 



1406A-. AO.%]VlSI.% Limll. 

 Bol. l\Qg: XXV. Misc. 65. p. 45. 



Perianthium patens, aequale; sepalis laleralibus haud basi productis. 

 Labellum liberum, mobile, indivisum, hypochilio i^arvo concavo, ab epi- 

 chilio crista transversa glandulosa diviso. Cohinma erecta, semiteies, 

 marginala, apice uliinqne hrachio acuto patulo aucta. Anlhera cristata. 

 Rostellum clongalum. Pollinia 4, per ]iaria connata, caudicula Jincari, 

 glandula parva ovali. — Khizoma repens. Pseudobulbosa. Pseudobulbi 

 monophylli. Hacemus erectus, radicalis, foliis brcvior. 



