ORCHIDACEiE 



15. Dendrobium carinatum Willd. Sp. PI. 4 : 133. An unknown 

 species which Kranzlin referred doubtfully to § Aporum. All ref- 

 erences to this species agree in citing Petiver's Bontia luzonica 

 as the type, but no adequate description was ever published. The 

 only satisfactory evidence as to the identity of the plant is Peti- 

 ver's figure on Plate 44 of his Gazophylacium.This figure exhibits 

 a species of § Rhopalanthe, and suggests JD. Robi?isonii Ames. It 

 has the characteristic habit of D. crumenatum Sw., but the leaves 

 are terete and rigid. The likelihood of JD. carinatum being con- 

 specific with JD. Robinsonii is increased when the distribution of 

 JD. Robinsonii, which is common in Luzon, is considered. In view 

 of Petiver's figure I am unable to understand Kranzlin's sugges- 

 tion that D. carinatum might be a representative of § Aporum. 



16. Dendrobium ceraula Reichb.f. in Linnasa 41: 40. "Caule 

 gracili, foliis densis, vaginis apice laxis, laminis oblongo lanceo- 

 latis apice subtilier tridentatis papyraceis, floribus geminatis, se- 

 palo dorsali lanceo, reliquis sepalis tepalisque breviori, omnibus 

 lanceolatis acutis, sepalis lateralibus in cornu gracile ascendens, 

 curvum,dimidiam longitudinemaequans extensis, labello ima basi 

 unguiculato dein humerato (si mavis utrinque semicordato) ob- 

 longo lanceolato, antrorsum ante apicem dilatato, callo parvulo 

 cornuto utrinque in basi ante unguem, carinis interjectis ternis, 

 columna brevi, angulo dorsali lineari, angulis lateralibus obtus- 

 angulis lobulatis. 



"Flos illi Dendrobii transparentis aequalis, inde unciam paulo 

 longitudine sepalorum excedens. Folia ad tres pollices longa, vix 

 dimidium pollicem lata. 



"Luzon, Jagor 895, 896 (Ex herb, regio. Berolinensi)." 



In a note Kranzlin said of this species: "Planta parvula, flores 

 fere hyalini illis D. transparentis Lindl. subsimilis, mento circu- 



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