240 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



Represented by a single oblong fruit, 1.5 cm. long, bearing many 

 long and colorless peridia, and by the original empty packet labelled 

 " Cseoma Peridermium germinale LvS in germinib. Rosae Collins." 



Although the fruit has considerable resemblance to a mummied- 

 rose hip, yet it is certainly the fruit of some species of Cratccgus, 

 and the fungus is the ascial stage of Gymnosporangium germinale 

 (Schw.) Kern (G. clavipes Cooke & Peck). The name is given as 

 Peridermium {Cceoma) germinale on page 312 of the same work. 



Genus 212. Puccinia Lk. and Dic^oma Fr. 



2905. I. P. Graminis, Lk. n. i, Syn. Car. 492. Very common also in Penn- 

 sylvania on grasses. 

 (492. 7. [Puccinia] Graminis. Frequent on the culms of grasses, 

 especially Andropogon.) 



Represented by the original packet containing a crumpled leaf, 

 and some fragments of stem and sheaths, all apparently of wheat, 

 Triticum vulgare VilL, bearing blackish, open telia of Puccinia poculi- 

 formis (Jacq.) Wettst. (P. graminis Pers.), together with six or 

 seven parts of conduplicate leaves, about 3 mm. wide, the pieces be- 

 ing from 6 to 15 cm. long, and heavily covered with dark brown or 

 blackish telial sori. The narrow leaves are undoubtedly some species 

 of Carex, and the rust some species other than P. poculiformis, but 

 the identity of neither rust nor host has been definitely determined. 

 The packet is labelled " Puccinia Graminis cerealis Germ. Sal. Beth." 



One of the pieces of sheath bears a small strip of gummed paper 

 across the middle, showing that it had originally been attached to a 

 sheet (see Shear, U. S. Dept. Agric. Bull., 380, p. 6, Jan. 15, 1917). 

 The writing on the packet appears to have been done all at one time. 

 It is, of course, impossible to say definitely if the material in the 

 packet is wholly American, or partly obtained in Germany, as the 

 labelling might indicate, but from the appearance it may be inferred 

 that it represents two collections, both from this country. 



*29o6. 2. P. striola, Lk. n. 2, on various Cyperaceae and grasses. Bethlehem. 



Represented by the original packet containing a dozen or more 

 short pieces, 1-6 cm. long, of a Juncus, probably /. effusus, bearing 



