KEY TO FEOWERING PLANTS 
309 
18. FIs. separate, each with 4 sep. (stam. 4) 
18. FIs. very small, crowded upon the scales of 
the catkin • 
19. Evs. pinnately compound 
19. Evs. simple 
20. Pist. fls. or groups of fls. exposed 
20. Pist. fls. enclosed in the scaly winter bud 
21. Ov. 1-celled, 1-seeded; sprawling herb 
21. Ov. 3-celled,‘ 3-seeded; erect 
22. White leafless saprophyte 10-20 cm. tall 
22. Submerged aquatic 
22. Trees or shrubs 
22. Woody vines 
22. Herbs, not woody, or slightly so at base 
23. Fls. showy; sep. 4; stam. many; carp, many 
23. Fls. minute, green, panicled, sweet-scented 
23. Fls. large, solitary, chocolate brown, tubular 
curved 
24. Evs. opposite, palmately lobed or 3-parted 
24. Evs. alternate 
25. Evs. silvery with star-shaped hairs 
25. Evs. not silvery 
26. Evs. and twigs with aromatic odor and 
taste 
26. Not aromatic 
27. Stig. 2, large; ov. 1-celled, 1-seeded 
27. Stig. 1-4, minute; ov. 2-4 celled, 2-4 seeded' 
27. Stig. 1; ov. 1-celled, 1-seeded; stam. 8 
28. Ov. inferior, the fl. coming from its upper 
surface (epigynous) 
28. Ov. superior, the fl. coming up around it 
(hypogynous) 
Sep. 3; stam. 6; ov. 6-celled 
Sep. 4; stam. 4; Ivs. whorled 
Sep. 4; stam. 4; Ivs. not whorled 
Stam. 5; one in front of each sepal; ov. 1- 
celled 
29. Stam. 5, attached between the perianth parts ; 
ov. 2-celled 
30. Ov. 2 or more, separate 
30. Ov. 1, 1-many celled 
31. Ov. 1-celled; stam. 9 or less 
31. Ov. 2-celled; stam. 2 
31. Ov. 3-celled 
31. Ov. 5-celled; many seeded 
31. Ov. 5-10 celled and seeded; fr. a purple berry 
32. Ov. many-seeded; Ivs. whorled 
32. Ov. many-seeded; Ivs. scattered 
32. Ov. 3-seeded 
33. Fls. showy; perianth tubular at base 
33. Fls. individually small, insignificant 
Urticacese 
Betulacese 
Juglandaceae 
20 
Fagaceae 
Betulaceae 
Chenopodiacese 
Euphorbiace^ 
Ericaceae 
Haloragidaceae 
24 
23 
28 
Ranunculaceae 
Vitaceae 
Aristolochiaceae 
Aceraceae 
25 
Eleagnaceae 
26 
Eauraceae 
27 
Urticaceae 
Rhamnaceae 
Thymeleaceae 
29 
30 
Aristolochiaceae 
Rubiaceae 
Onagraceae 
Santalaceae 
Umibelliferae 
Ranunculaceae 
31 
33 
Cruci ferae 
32 
Crassulaceae 
Phytolaccaceae 
Aizoaceae 
Cistaceae 
Euphorbiaceae 
Nyctaginaceae 
34 
