TYPHACEAE 7 



1. ISOETES L. 



Characters of the family. 



1. I. melanopoda J. Gay. Quillwort. Leaves 10-60, 4'-12' long, 

 slender and keeled, black and shining at base, — Low prairies which are 

 wet in spring, but dry in summer. Near Lake City and Dodson. Local. 

 May-July. 



Subkingdom SPERMATOPHYTA. 



Plants producing true seeds, formed from the fertilization of the ovules 

 by the pollen. 



Class I. GYMNOSPERMAE. 



Ovules not enclosed in an ovary. 



Family 7. PINACEAE Lindl. 

 Eesinous trees with awl-shaped entire leaves. Stamens and ovules 

 borne in separate aments. Perianth none. 



1. JUNIPERUS L. 



Evergreens with verticillate or opposite leaves and dioecious flowers 

 in small globose aments. Each scale in the pistillate araent bearing a 

 single erect ovule. Cotyledons two. Fruit berry-like. 



1. J. Virginiana L. Red Cedar. Usually a large tree : leaves of 

 two kinds, opposite, either awl-shaped and spiuy-tipped or scale-like, 

 imbricate, appressed and four-ranked : berries blue. — ^Young trees a few 

 inches high occasionally occur in rocky woods throughout the western 

 portion. There are also a few large trees north and west of Lee's Summit. 

 April. 



Class II. ANGIOSPERMAE. 



Ovules borne in an ovary. 



Subclass 1. MONOCOTYLEDONES. 



Embryo with one cotyledon. Leaves usually parallel-veined. Parts 

 of the flowers in threes. 



Familx 8. TYPHACEAE J. St. Hil. 

 Marsh plants with long, linear, nerved and sessile leaves. Flowers 

 monoecious in dense terminal spikes, staminate uppermost. Perianth 

 parts formed of bristles. Stamens 2-7 with connate filaments. Ovary 

 1-2-oelled with as many styles, stipitate. Fruit nut-like, usually one- 

 aeeded. 



