A Synopsis of Plant Pnyla 21 



Terrestrial or epiphytie plants for the most part, a few l)eing' 

 aquatic, or epizoic. 



Class 15. ASCOSPOREAE. Spore-fruits si)hcrical, cup- 

 shaped, or irregular, sinii)le or compound, always including- one 

 or more si)ore-sacs (asci) containing spores (ascospores). 



Order Laboulj!ENjali£S. i'lants minute, few-celled, erect, at- 

 tached below, and bearing one or more antherids and oogones, 

 which produce one or more simple, ascigerous fruits. 



Family i. Laboulbeniaceae. Plants parasitic upon insects 

 (mostly upon beetles) or at least attached to them. Twenty-eight 

 genera, and more than one hundred and fifty species are known. 

 Lahoulhcnia, Ceratoniyccs. (Pf. I, i, 491.) 



Order Perisporiales. Plants filamentous, producing minute, 

 simple, mostly spherical spore fruits, consisting of one to many 

 asci enclosed in a hard, cellular shell (perithecium). 



Family 2. Erysiphaceae. Superficial parasites upon higher 

 plants, the filaments white with abundant, simple, vertical conidi- 

 ophores, the blackish, spherical spore fruits with radiating, usu- 

 ally forked appendages. Ervsiphc, Microsphaera. (Pf. I, i, 

 328.) 



Family 3. Perisporiaceae. Mostly saprophytes with the yel- 

 low or black fruits usually without appendages. Parodiella, 

 Pcrisporinm. (Pf. T, i, 333.) 



Family 4. Micro thyriaceae. Minute superficial parasites upon 

 higher plants, the filaments dark colored ; spore fruits fiattish, 

 unappendaged, containing 8-spored asci. Microthyrimn, Aster- 

 ina. (Pf.'l, I, 338.) 



Order Pyrenomycetales. Plants filamentous (in many "li- 

 chens" compacted into a thallus), producing spheroidal, simple 

 or mostly compound spore-fruits, consisting of a hard cellular 

 mass (stroma) in whose surface the perithecia are partially 

 embedded. 



Family 5. Hypocreaceae. Simple or compound ; perithecia 

 mostly reddish or yellowish, subcarnose or waxv-membranaceous. 

 Nectria, Epichloc, Cordyccps, Claviccps. (Pf. T, i, 342.) 



Family 6. Dothideaceae. Compound ; perithecia black, cori- 

 aceous or carbonaceous, confluent with the stroma. Plozvrightia, 

 Dothidea, Phyllachora. (Pf. I, i, 373.) 



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