NATURAL CLASSES. 63 



taceis vel varians, fructif. evidens, scutellis, tii- 

 berculis vel. gemmulis dehiscens — Ord. 59, 00, 

 Hypoxilia, Lichenes, Thaliferis ^c auctoris. 



19, MYCOSIA, Terrestris vel parayitis, co- 

 loratis vix virides. Eti'usis, carnosis stuposis, 

 fungosis, lignosis, gelatinosis. Forma varians. 

 Fructif. sepe crypta vel inclusa, hysterium sporis 

 ferens — Ord. 03, 04, 05, 00, omnia Fungi 

 Auctoris. 



20, ALGOSIA, Aquatiles sepe virides inte- 

 dum terrestris vel parasitis. Etilisis, frondosis, 

 thalosis, filamentosis, herbaceis, vesiculosis. 

 Fructif. crypta, gelatinosa, vel gongyles — Ord. 

 61, 02, Chara,Conferva, Ulvacea,Fucides, Spon- 

 gides &LC auctoris. 



I admit in this Chara and Nostoc with Agar- 

 dle, but with doubt. Perhaps all terrestrial algas 

 are to be removed to the preceding classes, but 

 all the Spunges belong here ; since they are yet 

 deemed animals by some Naturalists, they 

 properly form the last link of vegetation, as 

 Roses the first link. 



The needful increase of natural families is 

 evident as we proceed in discoveries ; but the in- 

 crease of orders much less needed. To change 

 families into orders is not requisite to better 

 their knowledge. My 375 families may yet be 

 increased to about 400 ; but my 06 Natural 

 Orders require very little improvement, and 

 only admit of Sub-Orders. If such are to be 

 deemed peculiar distinct Orders I venture to 

 indicate those I ascertained and established 

 since 1815. 



ADDITIONAL ORDERS. 



1. Senticosia, differing from Rhodanthia by 

 pistils definite, types Agrimonia, Sibbaldia, 

 Spirea, &c. 



