NYMPHAEACEAE (WATER LILY FAMILY) 



11 SAG1NA. 



i a Petals 4; stalks of flowers often hooked after flowering 



PROCUMBENT PEARLWORT. (S. procumbent.) 

 b Petals 5 ; leaves usually bristle-tipped 



DECUMBENT PEARLWORT. (S. decumbens.) 



12 MOEHRfNGIA. .. .BLUNT-LEAVED SANDWORT. (M. lateriftbra.) 



13 ARENARIA. 



i a Leaves ovate ; flowers about % in. broad 



THYME-LEAVED SANDWORT. (A. serpyllifblia.) 

 b Leaves awl-shaped ; flowers about Vz in. broad 



PINE-BARREN SANDWORT. (A. caroliniana.) 



14 TISSA. 



i a Leaves very fleshy, circular 



SALT-MARSH SAND SPURRY. (T. marina.) 

 b Leaves flat, not fleshy SAND SPURRY. (T. rubra.) 



15 SP6RGULA CORN SPURRY. (S. arvensis.) 



16 AN^CHIA FORKED CHICKWEED. (A. canadensis.) 



17 SCLERANTHUS GERMAN KNOTGRASS. (S. dnnuus.) 



12 RANALES. Buttercup Order, 

 i NYMPHAEACEAE. Water Lily Family. 



1 CAB6MBA CABOMBA. (C. caroliniana*) 



2 BRASfcNI A WATER SHIELD. (B. purpurea.) 



3 NYMPH AfcA YELLOW POND LILY. (N. ddvena.) 



4 CASTALIA SWEET-SCENTED WATER LILY. (C. odorata.) 



5 NELUMBO INDIAN LOTUS. (N. nelumbo*) 



2 CERATOPHYLLACEAE. Hormoort Family. 



i CERATOPHyXLUM HORNWORT. (C. demersum.) 



3 MAGNOLIACEAE. Magnolia Family. 

 i MAGN6LIA. 



1 a Flowers appearing after the leaves unfold ; native 



trees or shrubs 2 



b Flowers appearing before the leaves unfold ; cultivated 



shrubs or trees 3 



2 a Mature leaves 3-6 in. long, glaucous beneath 



SWEET BAY. (M. <virginiana.) 

 b Mature leaves 10-24 in. long, not glaucous beneath 



UMBRELLA TREE. (M. tripetala.) 



3 a Flowers purplish or reddish on the outside 



SOULANGE'S MAGNOLIA. (M. soulangeana*) 

 b Flowers not purplish or reddish on the outside 4 



4 a Petals 9-18; flowers 2-4 in. broad 



JAPANESE MAGNOLIA. (M. stellata.*) 

 b Petals 6-9; flowers 4-6 in. broad 



CHINESE WHITE MAGNOLIA. (M. 



