nymphaeacrae; 131 



S. to Pa. and Va. Also introd. in Calif, and Oregon. Adv. from Eu. 

 Native of ks\a..— Pennsylvania : Phii<adei<phia ; Lancaster. ; Adams ; 

 Dauphin; Columbia. 



Order 11. RAN ALES. 



Water plants : emersed or floating leaves with peltate blades or a basal sinus. 

 Gyuoecium of 3 or more carpels : corolla present : plants with emersed or 



floating- leaves. Fam. i. Nymphaeaceae. 



Gynoecium of a single carpel : corolla wanting : plants with only submerged 

 leaves. Fam. 2. Cbratophyi.laceah. 



I<and plants, except some Ranunculaceae. 

 Anther-sacs opening by slits. 

 Hypanthium small or obsolete, at least not hollow. 

 Flowers perfect or monoecious, if dioecious, the plants neither vines nor 

 herbs with compound leaves. 

 Carpels more or less coherent or united into a cone-like structure. 



Fam. 3. Magnoliaceae. 

 'Carpels solitary or several, distinct, at least at maturity. 

 Sepals 3 : petals 6 : fruit pulpy : endosperm channeled. 



Fam. 4. Anonaceae. 

 Sepals 3-15 ; petals about as many ; plants, if shrubby, not with a 

 pulpy fruit : endosperm even. Fam. 5. Ranunculaceae. 

 Flowers dioecious ; vines with simple leaves. 



Fam. 6. Menispermaceae. 

 Hypanthium hollow, enclosing the numerous carpels. 



Fam. 7. Calycanthaceae. 

 Anther-sacs opening by hinged valves, except in Podophyllum. 

 Corolla present : hypanthium wanting. Fam. 8. Berberidaceae. 

 Corolla wanting : hypanthium present. Fam. 9. Lauraceae. 



Famii,y I. NYMPHAEACEAE DC. Water Lii,y Famii<y. 



Carpels several and distinct from each other. 

 Carpels not in a fleshy receptacle : sepals and petals 3 or 4 each : stamens 12- 



18. I. Brasenia. 



Carpels immersed in a fleshy receptacle : sepals and petals numerous : sta- 

 mens indefinite. 2. Nelumbo. 

 Carpels united into a compound pistil. 

 Petals small, filament-like : stamens hyyogynous. 3. Nymphaea. 

 Petals as large as the sepals : stamens epigynous. 4. Castalia. 



1. BRASENIA Schreb. 

 1. Brasenia peltata (Michx.) Casp. WaTER-SHIELD or -TARGET. 

 (Man. p. 406 ; I. F. /, 1526. ) In ponds and slovp streams, N. S. to Fla., 

 Man. and Tex. — Pennsylvania: Pike ; Monroe; Northampton; 

 Bucks ; Chester ; Lancaster ; Franki,in ; Huntingdon ; Cambria, 

 Williamsville ; DEi<awarE. 



2. NELUMBO Adans. 

 1. Nelumbo lutea (Willd.) Pers. American Lotus. (Man. p. 408; 

 I. F. /. 1534.) Shores of Lake Ontario to Mich., Conn., Fla., I. Terr, 

 and La. — Pennsylvania : Philadelphia ; Delaware, Marcus Hook. 



