114 MISSOURI BOTANICAL GARDEN. 



nating two moniliform chains. — C. minor. 6. Perithecium almost 

 mature. 7. An ascus and ascospores. 



Plate 6. — Ceratostomella echinella. 1. A conidial cluster. — C. capil- 

 lifera. 2. A conidial cluster. 3. Cephalospo7-ium-like aggregations of 

 conidia. — C. exigua. 4, 5. Conidial clusters, one having become 

 massed. 6. Conidia. 7. Ascospores. 



Plate 7. — Graphium eumorphum. 1. Stroma with heads. 2. Clusters 

 of secondary conidia. 3. Secondary conidia. 4. Parallel hyphae com- 

 posing a portion of a stromatic stalk. 5. Branches of hyphae bearing 

 primary conidia from head. — Graphium rigidum. 6. Stroma with head. 

 7. Conidial masses on surface of an agar culture, secondary conidia. 

 9. Primary conidia. 10. Germination of primary conidia. 



Plate 8. — Graphium atrovirens. 1. Stromata with heads. 2. Clusters 

 of secondary conidia. 3. Compound cluster, or side clusters of second- 

 ary conidia. — Graphium ambrosilgerum. 4. Stroma with heads. 5. A 

 cluster of secondary conidia. 6. Stroma, origin of stalk bearing head. 

 7. Filament bearing primary conidia from head. 



Plate 9. — Graphium album. 1. Stromata with heads. 2. Clusters of 

 secondary conidia. 3. Compound cluster of secondary conidia. 4. 

 Primary conidia. — Graphium aureum. 5. Stromata with heads. 6. 

 Conidial clusters and masses of secondary conidia. 7. Primary conidia. 

 — Graphium smaragdinum. 8. Stromata with heads. 9. Clusters of 

 secondary conidia. 10. Filaments bearing primary conidia from head. 



Plate 10. — Hormodendron cladosporioides. 1. Conidial clusters. — H. 

 griseum. 2. Conidial clusters, the smaller showing a Cladosporium 

 type. 



Plate 11. — Penicillium aureum. 1. A portion of a conidial cluster with 

 two complete chains of conidia, the remainder being incomplete and the 

 conidiophore drawn in two pieces. 2. A portion of the mycelium from a 

 culture of pine-decoction agar showing swollen cells suggestive of 

 chlamydospore formation. 3. A filament rugose with a deposit of a 

 colored granular exudaton. — Ilormiscium gelatinosum. 4. A colony on 

 agar showing the toruloid form, (enlarged 6 times). 5. A hypha with 

 hyaline yeast-like conidia. 6. Brown form of loosely attached conidia. 

 7, 8. Conidia in chains borne on short hyphae, the Ilormiscium type. 



Plate 12. — Fusarium roseum. 1, 2. Microconidia^ Verticillium-like 

 forms. 3. Microconidia aggregated in Cephalosponum-\\k& masses and 

 at the same time becoming uniseptate. 4. Microconidia one- to two- 

 ceHud, mucroconidia three- to four-celled. 5. Formation of abortive 

 chlanmlospores caused by the arrested germination of macroconidia. 

 6, 7, 8. Chlamydospore formation. 



