• Plate 2412. 



ORTHJEA CORDATA, Oliv. 



Vacciniace.e, Tribe Tiiibaudie^. 



0. cordata, Olii\ (sp. nov.) frutex vagans, rainis elongatis longe 

 dependentibus angulatis novellis parce hirtis, foliis subsessilibus v* 

 brevissime petiolatis coriaceis 5-nerviis ovato- v. elliptico-oblongis 

 subacutis v, breviter obtusiuscule acuininatis basi cordatis subtus 

 pi'iecipue in costa nervisque parce pubescentibus glabratisve, racemis 

 uiultifloris quasi-terminalibus breviter pedunculatis pubescentibus, 

 bracteis membi'anaceis alabastris subeequilongis cito caducis, bracteolis 

 subulatis, pedicellis superne leviter incrassatis apice articulatis, calycis 

 tubo basi intruso limbo quam tubo paullo longiore segraentis ovato- 

 lanceolatis acutiusculis, corolla tnbulosa infra medium sensim dilatata 

 ore aiigusta fere truncata lobis brevissiniis erectis ovato-rotundatis 

 jestivatione induplicatim plicatis, staminibus imae corollai insertis 

 corolla 3-4 plo brevioribus, loculis antlierarum apice brevissime liberis 

 poro truncato dehiscentibus. 



Hab. South America ; Columbia, between Ocana and Pamplona, 

 6000 ft., Kalhreyer (No. 1059). 



Folia 4-7 poll, longa, 2-2 1 poll. lata. Bacemi semipedales. Flares 

 viridi-rubescentes, 1-1 1- poll, longi, Filamenta libera, complanata, 

 apice angustata, dorso parce hirsuta ; antherse oblongae, prope basin 

 attixie. Ovarium 5-loculare ; ovula oo j stylus rectus, gracilis, glaber ; 

 stigma capitellatum ; discus styli basin circumcingens breviter annu- 



latim elevatus. 



This plant has long rested amongst our doubtful Thibaudiese, but I 

 think if Orthcea be maintained in a group of genera the diagnostic 

 marks of which are somewhat arbitrary, it may be referred to that 

 genus with little hesitation. The anthers are remarkable in their 

 very short free apical tubes, truncate in their broad terminal pores. 

 Orthcea is maintained by Dr. Baillon (with a ?) in his 'Hist, des 

 Plantes,' xi. 1 87, but reduced to Thibaudia by Dr. Drude in Engl, and 

 Prantl, Pflanzenfam., Ericaceae, 54.— D. Oliver. 



Tig. 1, Vertical section of calyx and ovary. 2. Transverse section of apex of 

 corolla, showing aestivation. 3. Corolla-lobes kid open. 4, Stamens, Iront and back 

 ■views. All enlarged. 



