570 Eumycetes. 



M. Roureae. Pleosphaendina Phaseoli, Tephrosticta ficina, Ophiobolus 

 seriatus, Anthostomella calocarpa, RoseÜinia lamprostoma, Amphi- 

 sphaeria bamhutina , Hypocrea degenerans , Hysterostomella Psychotriae, 

 Asterina Cassiae, A. laxiuscula, Phyllachora Afseliae, P. Dischidiae , 

 P. Pahudiae, P. Roureae, P. lagiinensis, P. Fici-fidvae, P. Sacchari' 

 spontanei, Dothidea Pterocarpi, Dothidella Albissiae, Phyllosticta 

 Bakeri, Septoria Bakeri, Lasmenia ficUia, Ephelis caricina, Gloeospo- 

 riuin Canavaliae, CoUetotrichuin euchroiiin, C. Pandani, C. Papayae 

 .{Gloeosporiuni Papayae Henn.); Cercospora Gliricidiae, C. Bakeri, C. 

 Biophyti, C. pantoleiica, and C. Litseae ghitinosae. Trelease. 



Sydow, H. and P. Sy dow. Enumeration of Philippine 

 fungi, with notes anddescriptionsofnewspecies. II. 

 (Philip. Journ. Sei. C. Bot. VIII. p. 475-5C8. f. 1—7. Dec. 1913.) 



Contains as new : Puccina Erehiae, Uredo Opercidinae , U. nervi- 

 seda, Aecidium lagunense, Dinieriella Cyatheantm, Meliola Mitragynes, 

 M. Merrillii, M. peregrina, 31. perpiisilla , M. peUictdosa, M. cylindro- 

 phora, Gtngnardia creberrinia, Hypospila anibigua, Merrilliopeltis 

 DaemonoropiSj Anthoston^ella discophora, Rosellinia niegalosperma, 

 R. Merrillii, Apiosporella aberrans, Diatrypella Psidii, Micropeltella 

 megaspernia, Micropeltis Seniecarpi, Seynesia Ipomoeae, Asteinna 

 pusilla, Asterinella obesa, A. Loranthi, A. hisonensis, A. lugubris, A. 

 distingiienda, Trichothyrinm orbicidare, Gibberella creberrinia , Hypo- 

 crella nielaena, Phyllacliora phaseolina, DiscodotJns lobata, Gloniian 

 bambnsinian ; Bulgaiiastrum n. gen. (Btdgariaceae), with B. caespito- 

 smn ; Calopeziza n. gen. {Psendopesiseae) , with C. mirabilis ; Dasys- 

 cypha Merrillii, Erinella philippinensis, Phyllosticta nianihoticola, 

 Phoinopsis Bakeri, P. Gliricidiae; SiTospha,eTSin.gen.{Sphaeropsideae). 

 with 5. botryosa ; Leptothyriinn circumscissiini, PycnotJiyrinni lobatiini : 

 Lasiothyrium n. gen. {Pycnothyriaceae), with L. cycloschison ; Gloeo- 

 sporiuni Lebbeck, Cylindrosporium exiguuni, Melanconiuni Merrillii, 

 Oospora obducens, Catenularia velutina, Cladosporiuni Oplismeni, 

 Cercospora Tabernaemontanae. Trelease. 



Wiltshire, S. P,, Infection and Immunity Studies on the 

 Apple and Pear Scab Fungi {Venturia inaeqiialis and V. 

 pirina). (Ann. Appl. Biol. I. p. 335-349. 4 pl. Jan. 1915.) 



The conidia of Venturia inaequalis and V. pirina germinate only 

 after Immersion for some time in water. The two species differ in 

 the Position in which the germ tube is produced, this being terminal 

 in V. inaequalis, lateral in V. pirina. In both cases a "collar" or flange 

 is developed at the apex of the germ tube. This arises apparently 

 as an excretion from the fungus hypha, and serves to attach it to 

 the cuticle of the host. A penetrating hypha grows from beneath 

 the appressorium into the cuticle, and penetration was observed to 

 take place both in old leaves and in those of resistant varieties. 

 Only in the young leaves or fruits of susceptible varieties, however, 

 does further development and the production of conidia take place. 

 In these mycelium is developed between the cuticle and the epider- 

 mal cells; in resistant parts, on the other band, little or no deve- 

 lopment of mycelium takes place. 



Immunity is shown therefore not to depend on the protection 

 of the cuticle. From the tendency of the hj^phae to grow hojizontally 

 the author considers that chemotropism plays little or no part in 



