FAIRMAN : ASCOMYCETES FROM NEW MEXICO 



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and centrally ostiolate, often somewhat umbilicate around the 

 ostiola, dull-black, 250-300 p in diam. ; asci clavate-cylindric, 

 rounded at the apex, short-stipitate, 8-spored, 100 X 10-12/*: 

 spores irregularly biseriate, very rarely uniseriate, oblong-fusoid, 

 4-septate, constricted more strongly at the third septum, the upper 

 portion of the spore larger and trilocular, the lower bilocular, the 

 third or middle cell markedly enlarged, straight or curved, obtuse 

 at the ends, hyaline at first, finally yellow or pale-brown, 20- 

 23X7/*. 



On old stems of Chrysothamnus graveolens (Nutt.) Greene 

 (14782). Accompanied by a Phoma whose pycnidia are black, 

 150-250 /x in diam. filled with round or oblong, hyaline, nucleo- 

 late spores, 3.3-4.5 X 3-3 ^ 



Phaeodictyae 

 Pleospora Bardanae Niessl 



On I so coma heterophylla (Gray) Greene, Bueyeros, Sept., 

 1916, Father A. Estrelt. 



Pleospora compositarum Earle 



On old stems of Kuhnia rosmarinifolia Vent. (14718). 



Spores 6-7-septate, muriform, 20-23 X io/a. This is probably 

 the small-spored form on Compositae noted by Earle ( PI. Bak. 

 2: 21) but it is doubtfully distinct, and may be Pleospora her- 

 barium f. microspora Sacc. 



Pleospora herbarum (Pers.) Rabh. 



On old leaves of Arenaria Fendleri Gray (14363 a), on old 

 stems of Chrysopsis hispida (Hook.) Nutt, (-14721), on Lacin- 

 iaria punctata (Plook.) Kuntze (14793), on old stems of Potentilla 

 filipes Rydb. collected at Baldy Peak (14368 a), on old stems of 

 Allionia line aria Pursh (14788), and on old stems of Litho- 

 spermwn multiflorum Torr. (14716). From Baldy Peak there 

 were two collections of the large spored form, viz., on old leaves 

 of Trifolium nanum Torr. (14325) with spores 6-7-septate, 36- 

 40 X 13-33 and on Trifolium stcnolobum Rydb. (14328 a) with 

 spores 7-9-septate, 30-40 X 13—17 /x. 



