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G. Spores hyaline: 
6. Spores yellow to brown : 
Metasphaeria. 
Leptosphaeria. 
7. Peritliecia hairy : Pyrenopliora. 
7. Peritliecia smooth : Pleospora. 
(P. gummipara, cause of formation of Gum-Arabic on Acacia). 
(t) Cucurbitaceae. 
1. Spores muriform, brown, several-celled : Cucurbit aria. 
( C . pithy ophilia, on Abies pectinata). 
(u) ( Yalsaceae .) ( Melanconidaceae .) 
1. Spores brown, 1-celled: Anthostoma. 
1. Spores hyaline, 1-celled: (2) 
1. Spores more than 1-celled: (3) 
2. Conidia layer formed in the upper layer of stroma, accompanying 
the peritliecia: Cryptospora. 
2. Conidia in pycnidia, or absent; on twigs and branches; common: 
Valsa. 
3. Spores 2-celled, rarely 4-celled, hyaline (4) 
3. Spores many-celled, brown : Pseudovalsa. 
4. Conidia “spores” dark-brown : Melanconis. 
4. Conidia hyaline or absent: Diaporthe. 
(D. parasitica on Chestnut trees). 
(x) Diatrypeaceae. 
1. Stroma only with pycnidia; spores 1-celled, hyaline: Calosphacria. 
1. Stroma well-developed, finally on the surface of substratum. ... (2) 
2. Asci 8-spored; spores cylindrical, curved, hyaline or pale-brown, 1- 
celled : Diatrype. 
2. Asci many-spored ; spores cylindrical, curved, brownish, 1-celled: 
Di 'a try pell a. 
(y) Xylariaceae. 
1/ . Stroma crust-like, plate-like, spherical or hemispherical, etc., at- 
tached by entire lower surface.; spores 1-celled: (2) 
1. Stroma erect, clavate, cylindrical or capitate, simple or branched; 
peritliecia lacking toward base: Xylaria. 
