WATER LILY FAMILY 



2. Stems spineless; leaves compound 



a. Low, 1-3 dm. high, usually trailing; leaflets 3- 



11, many-toothed B.repens 



b. Taller, 1-2 m. high, erect; leaflets 3-7, few- 



toothed B. Fremontii 





CERATOPHYLLACEAE HORNWORT FAMILY 



Sepals many, united, petals none, stamens 10-20, ovary 1 -celled, style 

 1, fruit a beaked achene; stamens and pistils in different flowers, the latter 

 solitary in the leaf axils; submerged aquatics, with finely cut leaves in 

 whorls of 5-12. 



CERATOPHYLLUM Linne 1753 HORNWORT 

 (Gr. keras, keratos, horn, phyllon, leaf) 



Characters of the family. 

 Stems 2-5 ft. long ; leaf lobes thread-like ; fruit ellipsoid C. demersum 



NYMPHAEACEAE WATER LILY FAMILY 

 Represented by the following genus: 



NYMPHAEA Linne 1753 YELLOW POND LILY 

 (Gr. nymphaea, water nymph) 



PL 3, fig. 4. 



Sepals 5-12, yellow, petal-like, petals many, small, stamen-like, stamens 

 many, pistils many, united, the 8-24 stigmas forming a wheel-like disk; 

 flowers large, single; aquatic herbs with large roundish heart-shaped float- 

 ing leaves. 

 Flowers 3-5 in. wide; sepals 9-12; leaves 4-15 in. long N. polysepala 



BRASSICALES MUSTARD ORDER 

 PAPAVERACEAE POPPY FAMILY 



Sepals 2 or 3, usually falling as the bud opens, petals 4-6, separate, 

 stamens many, pistil 1, stigmas one or several, united into a spreading disk, 

 ovary 1-celled or incompletely several-celled, fruit a capsule; flowers single 

 or clustered; herbs with alternate pinnatifid or pinnate leaves and milky or 

 orange-yellow juice. 



1. Stem leafless, 1-flowered; leaves not prickly PAPAVER 



2. Stem leafy, several-flowered; leaves prickly ARGEMONE 



