244 Illinois State Laboratory of Natural History. 



Grumulose, like clustered grains. 



Host, the supporting plant, that upon which a parasite lives. 



Hyaline, glass-like, transparent. 



Hymenium, fruit producing surface. 



Hypha (pi. hyphx), a tilament of a fungus. The vegetative hyphse taken 

 in quantity are called the mycelium. 



HypogenoKS, produced below. 



Hypophylloua, growing from the under side of leaves. 



Innate, growing inside or inclosed. 



Laciniate, cut-fringed. 



Lutescent, pale yellow. 



Mucronate, abruptly pointed with a spine. 



Mycelium, the vegetative filaments of fungi. 



Nuclear, pertaining to a nucleus. 



Nucleus, a difierentiated portion of the protoplasm of a cell. 



Pallescent, approaching pallid. 



Pallid, of a pale undecided color. 



Papilla, a small obtuse protuberance. 



Papillate, covered with papillse. 



Paraphysea, sterile elongated organs bordering a sorus, or distributed 

 among the spores. 



Parasite, one living upon and drawing its sustenance from another. 



Parasitic, having the characteristics of a parasite. 



Parenchyma, a tissue of thin walled cells, mostly somewhat spherical. 



Parenchymatous, composed of parenchyma. 



Pathogenic, disease producing. 



Pedicel, a foot stalk, the stem of a spore. 



Peduncle, a stalk, sometimes used for the stem of a spore, but more com- 

 monly as the main stalk of a flower or flower cluster. 



Peridium, a wrapper or covering. The membranous vessel inclosing the 

 spores in JEcidium is usually called a pseudoperidium, but for 

 brevity the former is sometimes used. 



Pilose, thinly covered with hairs which are long and weak. 



Promycelium, the germinal filament of a teleutospore upon which spor- 

 idia are borne. 



Pseudoperidium, a false peridium, the cup of Moidium. 



Pseudopodia, false feet. 



Pulverulent, powdery, covered with dust. 



Pulvinate, cushion-like. 



Punctate, dotted. 



Recurved, bent backwards or outwards. 



Reflexed, bent abruptly backwards or outwards. 



Reticulately, in a net-like manner. 



Rufous, red-brown. 



Saprophyte, a plant living on dead organic matter. 



Septate, divided by one or more partitions. 



Septum (pi. septa), a partition wall. 



