14 ANALYSIS OF THE NATURAL ORDERS. 



a Fruit borne on the leaves which are often more or lues contracted. . .FILICES. 159 

 a Fruit borne at the base of the radical, entire or lobed leaves. . MAUSILEACE^E. 156 

 ^ Leaves numerous, small, mostly spirally imbricated on the stem.. (ft; 



b Fruit axillary, sessile, opening by a slit LYCOPODIACE^:. 157 



b Fruit mostly terminal and usually stalked, opening by a lid Musci." 



T Leaves numerous, small, imbricated on the stem in 2 rows. I HEPATIC^E * 



Plants with the leaves and stem confounded, thallus-like I " 



f Plants with verticillate branches instead of leaves.. (c) 



c Fruit in terminal spikes, and of one kind only EQUISETACE.E. 158 



c Fruit lateral, scattered on the branches, and of two kinds CHARACEJE.* 



K. PROVINCE, THALLOGENS 



Plants aquatic, with a colored thallus. Fruit immersed in the frond 



Plants on dry rocks, logs, or bark of trees, thalloid or granular LICHENS.* 



Plants growing on decaying organisms. Thallus cotton-like, the fruit very ) FTTW T * 

 different, all without chlorophyll or starch ) " 



ThM Orders, the lower Cryptogams, are omitted in thii work 



