14 ANALYSIS OF THE NATURAL ORDERS. 



a Fruit borne on the leaves which are often more or l^s contracted. . .PILICBS. 159 

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

 1 Leaves numerous, small, mostly spirally imbricated on the stem.. (ft) 



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



b Frnit mostly terminal and usually stalked, opening by a lid Musci.* 



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



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



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



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



e Fruit lateral, scattered on the branches, and of two kinds CH ARACK*. 



K. PBOVTHCB, THALLOGENS 



Wants aquatic, with a colored thallns . Frnit immersed in the frond ALQJE. 



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



Plants growing on decaying organisms. Thallus cotton-like, the fruit very ^ 

 different, all without chlorophyll or starch 



TbMe Orders, the lower Cryptogam*, are omitted In thl* vrorf L 



