AN ARTIFICIAL KEY TO THE FAMILIES 
OF PLANTS INCLUDED IN THIS WORK 
(Numerals in parentheses refer to corresponding numbers of the small 
cuts. ) 
1. Ovules lying naked, usually between the scales of a cone or a 
berry-like body or on a fleshy disk. (1, 2, 3) 
5) © LTE «wh ee Oe Sees CLtass CONIFERAEK, 2 
1. Ovules developed in a closed cavity (an ovary). (4, 5) 
wie). Biehl Rae ores) es eee Crass ANGIOSPERMAE 3 
2. Seeds (ovules) in a cone-like (1) body or in a 3-seeded berry 
a! ay Ses ae ic RS mee Cm PINACEAE. Pg. 82 
2. Seeds (ovules) on a fleshy disk. (3) . . . TAXACEAE. Pg. 82 
3. Leaves mostly parallel-veined; flower non usually in 3’s; 
stem without pith, (6, 7). . ay} 
3. Leaves net-veined; flower parts mostly i in 5? Ss or 4’ 33 ae in 3 S83 
stems with pith, at least when young. (8, 9, 10) . . . 25 
6. 8 9. 10 
CLASS 1 
MONOCOTYLEDONS 
Peptstemise Ot Aquatic: @.0 i.) 2. cvlteY cea yay ls Me ape aed 
Aquatic Plants 
4. Aquatic plants, floating or submersed . . : eens) Lie) eS 
4. Aquatic plants, not floating nor wholly submersed eo at Coe 
67 
