CLASS XX. ORDER III. 59 



ORDER V. POLYGAMIA SEGREGATA. 

 Echinops. Proper calyx 1 -flowered : corol tubular, 

 perfect : receptacle setose : egret obsolete. 



CLASS XIX. GYNANDRIA. 



OKDER I. MONANDRIA or ORDER li. DIA\DRIA. 



Calyx 5 -leaved coloured, (or corol 5-petallcd.) 



A. With a spur under thz lower lip. 



OrcMs. Calyx ringent like, the upper leafets vaulted : 

 lip dilated, spur long : anthers terminal, adnate. 



Satyrmm* Calyx ringent-like, upper leafet vaulted : 

 lip linear, parted or sub-entire : spur short, sub-inflated 

 and somewhat 2-lobed : anthers terminal, adnate. 

 B. Lower lip without a spur. 



Ncottia. Calyx ringent-like, the outer side leafets uni- 

 ted before about the inflated base of the lip : anther par- 

 allel to the acuminate style, affixed behind. 



Cymbidium. Calyx 4 or 5-leaved, erect or spreading : 

 lip concave at the base, with a spreading border : anther 

 a caducous lid ; pollen globose. 



Malaocis. Calyx spreading, turned upside down by 

 the twisting of the peduncle when the petals open : lip 

 ascending, concave, spreading : anther a lid. 



Arethusa. Calyx somewhat ringent-like ; leafets some- 

 what converging : anther a permanent lid : pollen pow- 

 dery-granulated. 



ORDER II. DIANDRIA. 



Cypripedium. Calyx coloured, 4-leaved, spreading : 

 lip inflated, hollow : style with a terminal lobe ; and a 

 petal-like appendage on the upper side. 



ORDER V. PENTANDRIA. 



Jlsclepias. Petals 5, reflexed : nectaries 5, concave, 

 containing little horns : each stamen, with a pair of pendu- 

 lous anthers, suspended from the stigma. 



CLASS XX. MONOECIA, 

 ORDER III. TRIAXDRIA. 



Typha. Amcnt cylindric. Staminate flowers -calyx 

 obsolete, 3-leaved : coral 0. Pistillate flowers below the 



