ARTIFICIAL ANALYSIS 



OF THE 



NATURAL ORDERS. 



CLASS L THALLOGENS. 



Nourished by spawn or mycelium (Fu)i(/alcs). 

 Spores in fours. 

 Hjinenium naked. . . . . . ... AgaricacetB, 41 



HjTuenium inclosed in a peridium ..... Lycoperdacea: , 41 



Spores or spore cases single. 

 Spores naked. 

 Thallus obsolete . ....... Uredbxacece, 41 



ThaUus floccose ........ Botrytacece, 41 



Spores inclosed, 



in asci ......... HelveUacece, 41 



in a veil or sporangiimi ....... Mucoracece, 41 



Without spawn. 

 Aquatics [Algales). 

 Crj'stalline angular, multiplied by disarticulation . . . . Diatomacxce, 12 



Vesicular, or filamentous, or membranous, multiplied by zoospores . Confervacxce, 14 



Cellular or tubular. 

 Multiplied by simple spores ....... Fucacece, 20 



tetraspores ....... Ceramiacea, 23 



spiral coated nucules . . .... Characece, 26 



Terrestrial (LichenaUs). 

 Spores naked ........ GraphidacecB, 50 



Spores in asci. 



Thallus gelatinous or cartilaginous . . . . . . CoUemacece, 50 



Thallus pulverulent or cellular . . . . . ParmeliacecE , 50 



CLASS n. ACROGENS. 



§ With no dufinct axis of growth. 



Spores without elaters ....... 



Spores furnished with elaters. 



Spore cases opening into valves ..... 



valveless ....... 



§§ With a distinct axis of growth. 



Spores furnished with elaters, 

 inclosed in cases, opening into valves .... 



naked, collected in cones ...... 



Spores without elaters. 

 Spore cases seated on leaves, 

 ringed ........ 



ringless ........ 



Spore cases inclosed within the edge of a contracted leaf 



Spore cases inclosed within an involucre .... 



Spore cases naked, 

 sessile in the axil of leaves or bracts .... 



stalked, 

 valveless ........ 



opening into valves ...... 



Ricciaceee, 57 



Jungermanniac€ee, . 

 Marchantiacca, 58 



Jtingermanniacea, 5W 

 Equisetacea, 61 



Polypodiacetp, 78 

 DanaacecB, 82 

 Ophijglossacetp , 77 

 Marfikacece, 71 



Lycopodiacea, 60 



Bryacete, 64 

 Andraaceet, 63 



Ovules solitary 



Ovules indefinite. 



Anthers opening by slits 

 pores 



CLASS in. RHIZOGENS. 



3f 



BalanophoraMa, 



Cytinacttr , i)\ 

 liaffiesiacca:, 93 



