74 The Ohio Naturalist. [Vol. XIII, No. 4, 



(3.) Discomycetae. 



a. Hysteriales. Slit Fungi. 



b. Phacidiales. Little Cup Fungi. 



c. Pezizales. Cup Fungi. 



d. Protocaliciales. 



e. Helvellales. 

 (4.) Discolichenes. 



a. Coniocarpales. 



b. Graphidales. 



c. Cyclocarpales. 

 (5.) Pyrenomycetae. 



a. Hypocreales. 



b. Dothideales. 



c. Sphaeriales. 



d. Perisporiales. Powdery Mildews. 

 (6.) Pyrenolichenes. 



a. Pyrenulales. 



b. Mycoporales. 

 (7.) Exoasceae. 



a. Exoascales. 



b. vSaccharomycetales. Yeast-plants. 

 (8.) Deiiteromycetae. Imperfect Fungi. 



a. Monil'iales. Common Molds. 



b. Melanconiales. Black-dot Fimgi. 



c. Sphaeropsidales. Spot Fungi. 



4. Laboulbenieae. Beetle Fungi. 



a. Laboulbeniales. 



5. Teliosporeae. Brand Fungi. 



a. Tilletialcs. Stinking Smuts. 



b. Ustilaginales. Loose Smuts. 



c. Uredinales. Plant Rusts. 



6. Basidiomycetae. Basidium Fungi. 



(L) Protobasidiae. 



a. Auriculariales. Ear Fungi. 



b. Tremellales. Jelly Fungi. 



c. Dacryomycetalcs. 

 (2.) Hymenomycetae . 



a. Agaricales. 

 (3.) Hymenolichenes . 



a. Corales. 

 (4.) Gastromycetae. 



a. Hymenogastralcs. False Truffles. 



b. vSclerodermatales. Thick-skinned Puffl)alls. 

 0. Lycoperdales. Puffballs. 



d. Nidulariales. Bird-nest Fungi. 



c. Phallales. Stink-horns. 



Key to the Orders of Fungi. 



The Fungi arc Thallophytes without chlorophyll but sometimes inclose 

 chlorophyll-containing Algae in the meshes of their bodies. 

 L Plant body not a true mycelium, usually unicellular, or the cells some- 

 times in simple or branched filaments; some forms with a Plasmo- 

 dium, others with a sack-like body containing cells; the resting or 

 spore stage sometimes consisting of a sporangium-like body without 

 cell structure, with enclosed spores. 2. 

 1. Plant body a more or less perfectly devclo])cd mycelium consisting of 

 septate or nonseptate hyphae. 7. 



