260 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



tinctly shown" (1. c), hence Schweinitz says "pedicel articulate." 

 The earlier specific name is still retained, the species being Uromyces 

 Hedysari-paniculati (Schw.) Farl., and on Meibomia pauiculata 

 (L.) Kuntze (Hedysarmn panicwlatmn L., Desmodimn paniculatum 

 DC). 



Note. — The genera numbered 214-246 include the remainder of 

 Series I and all of Series II-IV. Under Series IV, Sporodermei, 

 the following species belong with the rusts. 



Genus 241. Seiridium. 



*3o84. I. S. marginatum, Lk. p. 126, n. i. Our plant, very common on Rosa 

 corymbosa growing in inundated places, agrees exactly with 

 Nees's illustration and description. But it is not the same in 

 size; for usually it occurs on branches, living or half alive, with 

 huge sori, very thick, two inches, encircling the branches, and 

 often many sori joined together. Spores so large that they are 

 clearly visible to the naked eye, or at least through a lens of 

 very low power. 



Represented by a mounted specimen, consisting of three rose 

 stems, 4-6 cm. long and 6 mm. thick, well provided with large, 

 blackish sori. No original packet was to be found. The rust is clearly 

 the very distinctive Earlea speciosa (Fries) Arth. {Phragmidium 

 spcciosum Fries), on Rosa Carolina L. {R. corymbosa Ehrh., R. 

 paiici flora Muhl.). 



*3o85. 2. S. Similacis [typographical error for Smilacis], L.v.S., here and 

 there erumpent from the stems of Smilax caduca and other 

 species, Bethlehem. 

 S. sori very long, confluent, yet much smaller, and not so thick [as 

 in the preceding species]. Spores cylindric, dark fuscous, obtuse, 

 pedicels very long, contorted, white. 



Represented by neither specimen nor packet at Philadelphia. In 

 the Michener Collection at Washington, there are two stems, one 

 5 cm. long by 5 mm. in diameter, and the other 4 cm. long and 3 mm. 

 in diameter, with many long weak prickles and well covered with 

 masses of telia. They are mounted and are labelled " Schw. Mss. 

 Seiridium obtusiusculum on rosa, Smilacis Beth, ex Herb. Schw.," 

 but without number. 



