Brenckle: North Dakota Fungi 



217 



Fusicladium dentriticum Fuckel. 



On apple and crab-apple leaves. Kulm and Garrison, Aug., 19 15, Stevens. 



(Fungi Dak. 229.) 

 Fusicoccum dakotense Sacc. & Syd. n. sp. 



On Primus melanocarpa. Kulm, May, 19 13. 

 Gloeosporium septorioides Sacc. 



On Quercus macrocarpa. Fargo, July, 19 14. 

 Helminthosporium avenaceum Curt. 



On Avena sativa. Kulm, Aug., 19 14. 

 Helminthosporium Urtici — H. Urticum Peck. 



On dead stems of Urtica gracilis. Kulm, Oct., 19 16. 



Forming dark brown, velutine spots, widely effused to completely cover- 

 ing sections of the stems. 



Hyphae brown, erect, at first short, one or two septate, later proliferous, 

 elongated and branched with many septa, to 300 ft long. Cells of the hyphae 

 are often bulbous at the apex, 15 to 40 ft long, 3 to 6 ft in diameter, 6 to 8 ft 

 at the bulbous apex. Cells are sometimes offset at the joints. 



Conidia are abundant, cylindrical, rounded at ends, brown, 3-septate, 

 minutely and obscurely warted, 16 to 30 X 6 to 9/i. 

 Hendersonia arundinacea (Desm.) Sacc. 



On Phragmites communis. Kulm, Nov., 1914. 

 Hendersonia Crataegi n. sp. 



On leaves of Crataegus mollis. Fargo, Sept. and Oct., 19 16, Stevens. 



Causes irregular brown areas of various sizes outlined by the capillary 

 veins. 



Mature acervuli few, usually epiphyllus, on pallid spots, black, flattish, 

 minute to 1/5 mm. in diameter, irregular in outline. 



Sporules ovate-oblong, straight or somewhat curved, sooty tinted or black, 

 3-septate, rounded at the apex while the proximal cell is subacute and hyaline, 

 with a pedicel sometimes attached, 14-22 X 5-7 ft. Pedicels hyaline up to 

 25 ft long. 



Heterosporium tuberculans Ellis & Everh. 



On Iva xanthiifolia. Kulm, Oct., 1908. 



(Fungi Dak. 255.) 

 Kellermania Sisyrinchii Ellis & Everh. 



On Sisyrinchium angustifolium. Kulm, June, 19 16. 



(Fungi Dak. 383.) 

 Leptotherium gentianaecolnm (DC.) Beauml. 



On Gentiana Andrewsii. Anselm, Aug., 19 16. 



(Fungi Dak. 385.) 

 Macrophoma Brenckleana Sacc. & Syd. n. sp. 



On Salix longifolia. Kulm, Feb., 1913. 

 Macrophoma smilacina (Peck) Bert. & Vogl. 



On Smilax herbacea. Mandan, Aug., 19 15. 

 Macrosporium fasciculatum Cooke & Ellis. 



On Phaseolus nanus. Kulm, Aug., 1908. 



(Fungi Dak. 56.) 

 Macrosporium heteronemum Desm. 



On Robinia hispida (in cult.). Kulm, Sept., 1914. 



(Fungi Dak. 368.) 



