MELAMPSORACEAE 



153 



2. Stalk composed of several hyphae; teliospores 

 smooth, septa vertical, cells in two layers; 

 I II — ; Canarium, Philippines 

 C. Cells of teliospore forming a head with cysts, 

 3-x in number 



1. Heads 3-celIed; stalk simple; I II — ; Fabaceae, 



Costa Rica 



2. Heads x-celled 



a. Heads with a compound stalk 



b. Heads sessile; I — ; Securinega, China, Japan 



Anthomycetella 23:807, D 70 



Cystomyces, D 70 



Ravenelia 7:770, D 72; 40 

 Nothoravenelia 21:745, D 73 



Family 64. MELAMPSORACEAE 

 Dietel 35; 7:586 



Teliospores sessile, firmly united into 1-x-layered crusts, pulvinate masses or 

 columnar bodies, 1-celled, or x-celled and in this case often developed in the epider- 

 mal cells or in the mesophyll, promycelium exserted or internal; aecia with or 

 without peridia; uredia often with a peridium or with pseudoparaphyses, the spores 

 single or in short chains. 



The limits of several genera are not accurately drawn with respect to the 

 spore character, and these are included in the section Phragmosporae in spite of 

 the fact that the spores of a few species are 2-celled or even 1-celled. 



Amerosporae 

 Teliospores 1-celled, colored or hyaline 



A. Aecia with peridium, or lacking 



1. Uredospores typically in short chains; uredia 



without peridium 



a. Telia pulvinate; teliospores separate in cylin- 



dric sometimes ramose chains; promycelium 

 exserted 



b. Telia flat; teliospores laterally united into 



a waxy layer; promycelium internal 



(1) Teliospores cylindric or sometimes clav- 



oid 



(a) Teliospores in a single layer; Angio- 



sperms 



(b) Teliospores in short rows; I II — ; Pinus 



(2) Teliospores ellipsoid, later elongated; 



I — ; Fagus, Chile 



2. Uredospores typically single, not in chains; 



uredia often with peridium or pseudoparaph- 

 yses 

 a. Teliospores united in a 1-layered crust or 

 single in the mesophyll 



(1) Teliospores in the epidermal cells; N. 



Hem. 



(2) Teliospores beneath the epidermis 



(a) Uredia with peridium; Betulaceae, N. 



Hem. 



(b) Uredia without peridium; I — ; Hyperi- 



cum, Eur., Afr. 



Chrysomyxa 7:759, D 44; 39 



Coleosporium 7:751, D 45 

 Gallowaya, D 46 



Micronegeria, D 46 



Melampsorella 7:596, D 40 



Melampsoridium 21:605, D 41 

 Mesopsora, D 41 



