427 



SPECIES TO BE TRANSFERRED TO PHOMOPSIS. 

 764. Phoma acanthina, Sacc. & Roum. 



This is now called Macrophoma acanthina, Berl. & Vogl. in 

 Syll. Addit. p. 308, and nothing more is known concerning it. 

 It can hardly be doubted that it is a young state of a Diplodia, 

 but the only specimen at hand (Koum. Fung. Gall. 



shots 



w» VUH, 0XS 



But on the same sheet were two specimens of Phoma Acanthae, 

 Bourn. (Fung. Gall. exs. no. 717) which obtruded themselves at 

 once upon the eye as representing a Phomopsis, and on examina- 

 tion turned out to be evidently the same as Phoma Acanthi, Sacc. 

 & D. Sacc. (Syll. xviii. 257) ; they agreed with the description in 

 detail, but showed A and B spores, not A spores only, a- 

 Saccardo's did. 



Phomopsis Acanthi, Grove. 



Phoma Acanthi, Sacc. & D. Sacc. Annal. Mycol. 1905, p. 166. 



Phoma Acanthae, Roum. Fung. Gall. exs. no. 717 ! 



Pycnidia gregarious and arranged more or less longitudinally 

 along the stem, occupying partly a large oblong bleached spot, 

 but also extending on to the darkened (rufous-fuscous) parts 

 surrounding it, oblong-lanceolate, 500-750 p diam., blackish- 

 brown, surrounded by a faint brownish stain, depressed, mouth- 

 less or opening irregularly, the apex of each pycnidium where it 

 will open being marked by a pale dot, due to the loosened epi- 

 dermis. A-spores ellipsoid, about 7 x 2 fx; B-spores about 

 20 x 0*75 /x, both on short sporophores. (Fig. 1, a.) 



On dead stems of Acanthus mollis, Rome and Perpignan. 



Probably the pycnidial stage of Diaporthe picea f. Acanthi 

 (Sacc. Syll. i. 648). Pycnidia very imperfect, often represented 

 merely by the darkened epidermis. As Saccardo remarks, the 

 pycnidia occur on both the bleached and the darkened portions 

 of the stem. 



768. Phoma Veronicae, Roum. 



On this exsiccatum (Roum. Fung. Gall. exs. no. 2960) there are 

 three fungi in the Kew exemplar. The first is that named above, 

 a true Phoma; the second is a Pleospora, to which doubtless the 

 Phoma belongs, and the third is a form of Phomopsis hysteriola, 

 which, since that species is not well understood, had better be 



described here : 



Phomopsis hysteriola, Grove. 



f . Veronicae nov. 



Pycnidia imperfecta, atra, lentiformia vel subglobosa, papil- 



lata, in maculis dealbatis singula vel seriata disposita, subter 



fibrillas ligni nidulantia (corticis partibus et superiore et interiore 



dilapsis) easque rima singula vel pluribus parallelibus diffin- 



dentia, tandem emerge ntia, halone leviter nigrescente cineta. 



Sporulae copiosae, lanceolati-ellipsoideae, altera saltern apice 



acutatae, 1-3-guttulatae, saepius eurvatae vel flexae, 6-8 x 2-3 /x f 



sporophoris subulatis, curvulis, 10-12 fx longis, e strato moll/ 



pallide fuli^ineo oriundis suffultae. 



C2 



