5 



Thouars's figure that the same thing happens to the large con- 

 volute bracts. This unusual singularity has suggested the 



name Pesomeria (irtTrrco, I fall off, and fiepof a part of any 

 thing); of which the following is a character and description. 



PESOMERIA. 



§ 



Sepala subaequalla, libera, spontfe decidua. Petala conformia, basi columnffi 



adnata, persistentia. Labellum posticum, cum columna connatum, basi 



gibbosum, limbo indiviso convolute. Columna clavata, semiteres, clinan- 



drio dentato. Pollinia 4, cuneata. — — Herba terresiris ; caule tetra-' 



• gono; foiiis membranaceis plicatis ; racemo laterali ^simplici, bracteis 



1 . P. tetragona. 



fib 



Afi 



Sepala carnosa, patula, oblonga, carinato-acuminata, luteo-viridia, intils fusca, 

 lineis intensioribus, omnino libera, asqualia, sponte decidua ! hxk pollicem 

 longa, 3 lineas lata. Petala aliquotiesbrevioraet angustiora, obovata, acu- 

 tissTma, intils luteo-fusca, cum columna parallela ejusque basi utrinque ad- 

 nata, baud decidua. Labellum posticum, convolutum, carnosum, cum co- 

 lumna seraiconnatum, imabasi gibbosum, cuniculo intus pubescente ; lamina 

 obscure lutea, venis divergentibus fusco-purpureis, latiore quam longa, apice 

 cuspidata et crispa, intfls spars^ villosa, linea media elevata lata carnos^ 

 sursiim sulcatl Columna clavata, semiteres, clinandrio dentato. ^ Stigma 

 lunatum, rostello plicato? Anthera obtuse conlca,^ pilis albis erectls 

 villosa, apice membranacea, bidentata, suberosa, obsolete^ 8 -locularis. Pol- 

 linia 4, cuneata, cereacea, materie pulverulenta elastica cohserentia (ulte- 

 riiis indaganda). 



7. EPIDENDRUM Boothmnum. 



E. Boothianum ; pseudo-biilbis ovatis subdi|)hyllis, foiiis ligulato-oblongis un- 

 dulatis apice subobliquis, racemo termmali laxo sub-7-floro basi spathaceo 

 foiiis lonciore, sepalis petalisque subsequalibus patulis ovali-linearibus acuiis 

 fusco-variegatis, labello semilibero rhomboideo acuto utrinque deflexo. 



I have had an account of this pretty species of Epiden- 

 drum in ray possession for nearly two years, without being 

 able to satisfy myself about its being certainly new, so many 

 are the species of this extensive genus. Upon a recent 

 examination of the evidence it does appear distinct, and 

 therefore it is named in compliment to Mr. W. B. Booth, 

 one of the most intelligent gardeners in this country, 

 to whom I am obliged for a drawing and the following d 



pt 



of it ; Sir Charles Lemon has supplied me with 



some excellent specimen^ 



