1522 



ANGRiECUM* eburneum. 





Ivory Angracum. 



GYNANDRIA MONANDRtA. 



Nat. ord. Orchidea:. § Vandese Lindl. {Introduction to the natural 

 system of Botany, p. 262.) 



ANGRJECUM Thouars. — Perianthium patens. Sepala et petala sub- 

 eequalia, libera. Labellum sessile, cum basi colli mme continuum, carnosum, 

 indivisum, petalis multo latius; calcare recto cornuto, saepi&s subcylindraceo, 

 perianthio mult6 longiore, rar6 obconico. Columna nana, subteres, rard 

 elongata, semiteres. Anthera 2-locularis, truncata. Pollinia 2, bipartibilia, 



caudicula brevi angusta, glandula triangulari. Epiphytee, caulescentes. 



Folia coriacea, ligulata, apice obliqua. Flores solitarii v. racemosi, albi, 

 nunc citrini, v. herbacei. 



A. eburneum ; caule simplici, foliis coriaceis lucidis apice obliquis 7-striatis, 

 spicis multifloris secundis, labello cordato subrotundo cuspidato basi jugo 

 elevato crista to, calcare sepalo supremo parallelo et dimidio longiore, 

 ovario scabro. 



Limodorum eburneum. u Borv Voyage, 1. 359. t. 19." Willd. sp. pi. 

 4. 125. 



Angrsecum eburneum. Thouars orch. afr. t. 65. Ach. Richard orch. 



maurit. p. 71. 

 Aerobion eburneum. Spreng. syst. veg. v. 3. 



Caulis erectus, simplex, crassus, sesquipedalis, hie illic radices tortuosas 

 promens. Folia subdisticha, ligulata, lucida, valde coriacea, apice obliqua, 

 quandoque emarginata. Spica d basi caulis, ascendens, caulis longitudine, 

 teres, secunda, multiflora. Flores inodori, explanati, diametro 3%-unciali. 

 Sepala et petala subcequalia, linear i-lanceolata, coriacea, basi convexa, omninb 

 libera, pallide herbacea. Labellum eburneum, cordatum, subrotundum, 

 abrupt^ acuminatum, concavum, basi cristd obcuneatd elevatd longitudinali 

 instructum, calcaratum. Calcar ferh tres uncias longum, cornutum, ad 

 apicem sensim attenuatum, intus pubescens, cum sepalo dorsali parallelum. 

 Columna nana, carnosa, subteres, truncato-conica. Clinandrium planum, 

 immarginatum, apice angustatum; margine antico alte excavato. Stigma 

 subfornice clinandrii occult um. Anthera subrotunda, truncata, bilocularis; 

 loculis paulb disjunctis, longitudinaliter dehiscentibus. Pollinia 2, bipartita, 

 incumbentia, basi approximata, caudiculd lineari emarginatd glandules 

 triangulari affix A. Ovarium breve, sexsulcatum, verruculosum, costis ro- 

 tunda t is. 



An alteration of Angurek, the Malayan name of such plants. 



VOL. XVIII. H 



