IOWA ACADEMY OF SCIENCE 
31 
SPERMATOPHYTA. 
CLASS X— GYMNOSPERMAE. 
PINACEAE. 
JUNIPERUS (Tourn) L. 
25. Juniperus virginiana L. Red Cedar. Formerly plenty, now al- 
most extinct. 
CLASS II— ANGIOSPERMAE. 
TYPPIACEAE. 
TYPHA 
26. Typha latifolia L. Cat-tail. Common in marshy places. 
SPHARGANIACEAE. 
SPHARGANIUM 
27. Spharganium eurycarpum Engelm. Bur-reed. Common in 
marshy places. 
28. Spharganium androcladum (Engelm.) Fern. & Eames. Branch- 
ing Bur-reed. Rare. 
NAJADACEAE. 
POTAMOGETON (Tourn) L. 
29. Potamogeton americanus C. & S. Long Leaved Pondweed. Com- 
mon in streams. 
30. Potamogeton illi/nomsis Morong. Illinois Pondweed. Scarce ; Old 
Man Creek. 
31. Potamogeton foliosus Raf. Leafy Pondweed. In ponds and bay- 
ous. 
