Ord. 1.] MONOECIA MONANDRIA. 179 



tary, closely invested, at its base, with the hemispherical 

 outer calyx. — N.O. Amentace^e. 

 446. CoRYLUS. Barr.fl.m* catkin. Cal. a 3-cleft scale. Cor. 0. 

 Stam. 8 or more. 



Fert.fi. Cal. double ; outer inferior, divided; inner supe- 

 rior, obsolete. Cor. 0. Styles 2. Nut solitary, bony, in- 

 vested with the enlarged, coriaceous, jagged outer calyx. 

 — N.O. Amentace^e. 

 445. CARPfNUS. Barren fl. in a catkin. Cal. a rounded scale. 

 Cor. 0. Stam. 10, or more. 

 Fert.fi. Cal. double ; outer inferior, of several deciduous 

 scales ; inner superior, in three deep, sharp segm., per- 

 manent. Cor. 0. Styles 2. Nut ovate, angular, naked. 

 — N.O. Amentace^e. 

 444. BeTULA. Barr.fi. in a catkin. Cal. a ternate scale. Cor. 0. 

 Stam. 10—12. 



Fert. fl. in a catkin. Cal. a peltate, 3-lobed, 3-flowered 

 scale. Cor. 0. Styles 2. Nut winged, deciduous. — N.O. 

 Amentace,e. 

 440. ARUM. Common Cal. a sheathing leaf, enclosing a common 

 stalk, naked above. Cor. 0. 



Barr.fi. Stam. numerous, in a dense ring, surmounted by 



another ring of abortive filaments. 

 Fert.fi. Germens numerous, in a dense ring, below the 

 stamens, sessile. Styles 0. Stigma downy. Berry with 

 several seeds. — N.O. Aroide/e. 



Order VII. MONADELPHIA. Filam. united below. 



437. PlNUS. Barr.fi. in a catkin, naked. Stam. numerous, on a 

 common stalk. 



Fert. fl. in a catkin, of close, rigid, 2-lipped, 2-flowered 

 scales. Seeds 2 to each scale, winged — N.O. Conifers. 



Typha ? 



MONOECIA MONANDRIA. 



423. EUPHORBIA. Spurge. 



[Herbaceous or shrubby, abounding with white, milky, acrid juice. 

 Stem round, leafy. L. simple, sometimes downy.] 



* Stem forked. 



1. E. Peplis, 28. 2002. (Purple S.) Leaves nearly entire, half-heart- 

 shaped. Involucrums solitary, axillary. Stems procumbent. 

 Capsule smooth. 

 Sandy sea-shores, in the S. 0.7, 8. Glauc. tinged with purple. 



