192 dioecia. [CI. 22. 



445. CARPlNUS. Hornbeam. 



1. C. Betulus, 29. 2032. (Common H.) Bracteas of the fruit flat, 

 serrated, with two lateral lobes. 

 Clayey woods. T? . 5. Small Elm-like tree, smooth. 



445. CoRYLUS. Hasel-nut. 



1. C. Avelldna, 11. 723. (Common H.) Stipulas ovate, obtuse. 

 Leaves roundish, heart-shaped, pointed. Young branches hairy. 

 Calyx shorter than the nut. 

 Woods and hedges. Tj . 3, 4. Bushy tree. L. downy. Nuts eatable. 



MONOECIA MONADELPHIA. 



447. PlNUS. Fir. 



1. P. sylvestris, 35. 2460. (Scotch F.) Leaves rigid, in pairs. 



Young cones stalked, recurved. Crest of the anthers very small. 



Highlands of Scotl. \ . 5. Tall evergreen tree. Cones tuber cled. 



Class XXII. DIOECIA. Stamens and pis- 

 tils in separate flowers, on different plants. 



(MONANDRIA. Stamen 1.) 



Several Salices. 



Order I. DIANDRIA. Stamens 2. 



448. SaLIX. Bar.Jl. Catkin imbricated. Cal. a scale. Pet. 0. 



Nect. 1 or more glands, at the base. Stam. 1 — 5. 



Fert.jl- Catkin imbricated. Cal. a scale. Pet. none. Nect. 

 as in the barr.Jl. Stig. 2. Caps. sup. of 1 cell and 2 

 valves. Seeds tufted. — N.O. Amentace^e. 



Order II. TRIANDRIA. Stam. 3. 



449. EMPfiTRUM. Barr.Jl. Cal in 3 deep segments. Pet. 3. 



Stam. capillary, 3 — 9. 



Fert.jl. Cal. in 3 deep segments. Pet. 3. Stigmas 9. 

 Berry superior, with 9 seeds N.O. EmpetrejE. 



450. RuSCUS. Barr.Jl. Cal of 6 leaves. Pet. 0. Nect. ovate, 



tubular, bearing the stam. internally. 



Fert.jl. Cal. and nect. as in the barr. Jl. Stam. 0. Style 



1. Berry superior, of 3 cells. Seeds in pairs N.O. 



Smilace^e. 



Valeriana dioica. Some Salices. 



