BOTAMCAL GAZETTE. 276 



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usually pale at the apex,verruculose, .001 6-. 002 of an inch long .0008- 

 .0009 broad; pedicel colorless, generally about half as long as the spore. 



Living leaves of Viburnum pacuifloruin. Canada. Aug. C. G. 

 Pfifiglc. 



The spots are from one-half to one line broad. Each sjjot is 

 generally occupied by a single sorus. Rarely a few sori appear along 

 the principal veins on the lower surface of the leaf. The verrucas or 

 warts are irregularly scattered, but sometimes they manifest a tendency 

 to a linear or longitudinal arrangement, and they are generally more 

 numerous toward the apex of the spore. This is an interesting addi- 

 tion to the few species of Puccinia that inhabit the leaves of trees or 

 shrubs. It is respectfully dedicated to its discoverer. 



Puccinia hysteriiformis. — Spots obsolete ; sori scattered, rather 

 large, oblong, at first covered by the epidermis which is at length 

 ruptured longitudinally, black ; spores oblong or oblong-clavate, blunt 

 or pointed, strongly constricted at the septum, .0016 — .ooTQofan 

 inch long, about .0008 broad; pedicel generally longer than the spore. 



Living leaves of Arcnaiia vcrna. Utali. May. Prof. M. E. 

 loncs. 



The oblong sori and longitudinally ruptured epidermis present an 

 appearance not unlike that of some species of Hysterium and suggest 

 the specific name. 



Trichobasis BalsamorhiZ/E. — Spots indefinite, brownish ; sori 

 scattered, sometimes confluent, amphigenous, reddish-brown ; spores 

 globose or subglobose, minutely rough ; .con-. 0012 of an inch long, 

 often containing one to three nuclei; pedicel nearly equal to the spore 

 in length, soon deciduous. 



Living leaves of BahamorJiiza macrophylla. Utah. May. M. 

 E. Jones. 



This will probably prove to be the stylosporiferous condition of 

 some Puccinia or Uromyces. The large patches formed by the con- 

 fluence of the sori occur mainly on or along the principal veins or 

 midrib. 



Uromyces borealis. — Hy}nc7iifcrous state. — Spots none; peridia 

 mostly epiphyllous, scattered or rarely collected in small clusters, short, 

 white; spores subglobose, .00065-. 0008 of an inch long. 



Tekiitosppriferoits state. — Sori mostly epiphyllous, scattered, small, 

 black or blackish-brown; spores obovate or subelliptical, smooth, 

 .001-. 00 1 2 of an inch long, .0005-.00065 broad, with a prominent 

 pale umbo at the apex ; pedicel very short. 



Living or languishing leaves of Hedysanim boreale. Canda. C. 

 G, Eringle. Also on Hcdysarum Mackcnzii. J. Macoun. 



In the dried specimens the yEcidium spores are whitish, but prob- 

 ably tjiey are yellow in the fresh state. Sometimes a sorus surrounds a 

 peridium of the .'Kcidium, in which case the appearance is that of a 

 black dot with a white center. 



UsTiLAc.o OsMUND/K. — Sporcs produced in the pinnules of the 

 fern, globose, brown, rough or verruculose, .0005-. 0006 of an inch 

 in diameter; the affected pinnules deformed, discolored, roughened 

 and contracted into tufts. 



