PAPERS GIVING RUSTS OF XORTH AMICRICA. 223 



Kellerm. (P. Muhlcnbcrg'uc Arili. & Hohv.), on Miihlcnberj^ia and 

 other grasses, as repeatedly proven by cultures. Schwcinitz changed 

 the name to Aicidium (Ccroma) hibisciatiim on page 309 of the 

 same work. 



*2878. 68. C. A. Ilcpaticatum, L.v.S., scarcely C. quaclrifidum, Lk. n. 152. 

 Here and there on degenerate leaves, i. c., not triIol)atc, but nearly 

 renifonn and inultilohed, of Anemone hepatica, Bethlehem. 

 C. spots entirely wanting; the leaf, nevertheless, on which it rests 

 degenerates. Pseudoperidia very large, broad, the margin ex- 

 actly cleft into four parts, rcvolute, the lobes broad, brown. 

 Spores fuscous-brown. Occupying the whole leaf. 



Represented only by an empty packet labelled "/Ecidium He- 

 paticatum Bethlehem. 24." 



It is probable that the failure to recognize this rust as the 

 /Ecidium quadrifiduni DC, found on Anemone in Europe, was 

 largely due to the peculiar distortion of the leaf produced by the 

 fungus in the case of Hepatica. The form on both Hepatica and 

 Anemone is the fecial stage of the plum rust, Tra>ij:schclia punctata 

 (Pers.) Arth. (Piiccinia Pnini-spinoscc Pers.), and is on the common 

 liverleaf of the eastern states, Hepatica Hepatica (L.) Karst. {H. 

 triloba Chaix., Anemone Hepatica L.). The combination /Eciditim 

 (Cccoma) hepaticatiun is made by Schweinitz on page 309 of the 

 same work. 



2879. 69. C. A. Geraniatum, Lk. 156, on leaves of Geranium maculatum and 



G. carolinianum. Exactly identical with the European. Syn. 



Car. 443. 

 (443. 14. [.Ticidium] Geranii niaculati Sz. 



A. diffuse, hypophyllous, thickened, red, peridia dense, broad, 

 smooth on the margin, spores yellow. 



Frequent and large on leaves of Geranium maculatum. On the 

 upper surface of the leaves it makes a difTuse spot. Peridia densely 

 aggregated. Spores simple, globose, cellular under the microscope, 

 yellow-fuscous ; some are united in pairs as if compound, and very 

 rarely are furnished with a pedicel.) 



Represented by the central part of a leaf, 2 by 3 cm., mounted, 

 showing one large group of secia, and by an empty packet labelled 

 inside " .Ecidium Geranii maculat Salem," and on the outside 

 ".Ecidium Geraniatum LvS G. maculat Salem." 



