172 NORTH AMERICAN FLORA fVoi^UME 7 



pedicel once and a half length of spore, the upper half colored, 8-10 /^ in diameter, the 

 lower half colorless, usually narrowed downward, swelling in water, 20-28 /^ in diameter. 



On Rosaceae : 



Rosa alba L., Maryland, Nebraska. 



Rosa gallica ly. {R. centijplia I,.), California, Nebraska; Mexico. 



Rosa sp. cult., California, Connecticut, Delaware, Iowa, Massachusetts, Michigan, Ne- 

 braska, New York, Texas, Vermont, West Virginia ; New Brunswick ; Mexico, Oaxaca. 

 Type locality : Mecklenburg, Germany^ on Rosa alba. 



Distribution : Throughout North America on cultivated roses, especially those having large 

 and firm leaflets ; also in Europe, western Asia, South America, and Hawaii. 



Illustrations : Beitr. Krypt. Schweiz 22 :/. 281; Torreya 9 : 23,/. 6 ; Hedwigia 44 : pi. 4,f. 1. 



ExsiccATi : Ellis & Ev. Fungi Columb.52; Barth, Fungi Columb. 2745, 3049; Barth. N. Am. 

 Ured. 12. 



12. Phragmidium subcorticinum (Schrank) Wint. in Rab. Krypt. 



Fl. 1' : 228. 1881. 



Lycoperdon subcorticinum Schrank, Bot. Tasch. Hoppe 1793 : 68. 1793. 



Uredo mtniata Pers. Syn. Fung. 216. 1801. 



Uredo mimaia a Eglanteriae Pers. Syn. Fung. 216. 1801. 



Uredo elevata Schum. Enum. PI. Saell. 2 : 229. 1803. 



Aecidium Rosae Rohling, Deuts. Fl. ed. 2. 3 : 122. 1813. 



Uredo Eglanteriae H. Mart. Fl. Mosq. ed. 2. 230. 1817. 



Caeoma miniaium Schlecht. Fl. Berol. 2 : 120. 1824. 



Caeoma Rosae miniatum Link, in Willd. Sp. PI. 6^ : 30. 1825. 



Erysibe miniata rosarum Wallr. Fl. Crypt. Germ. 2 : 200. 1833. 



Coleosporium miniaiutn Bon. Coniom. 60, in part. 1860. 



Phragmidium rosarum- f . R. pimpinellifoliae Rab. Fungi Eur. 1671, hyponym. 1873. 



Caeoma exitiosum Sydow, Ured. 1700, hyponym. 1903. 



Phragmidium, Rosae-pimpinellifoliae Dietel, Hedwigia 44 : 339. 1905. ^ 



0. Pycnia chiefly caulicolous, usually abundant, irregularly distributed, often crowded, 

 somewhat confluent, inconspicuous, pale honey-yellow, flattened- con oidal or discoidal, ex- 

 tending into the lateral walls of the epidermal cells, comparatively small, 50-120 ^ in diam- 

 eter by 15-30 ^ high. 



1. Aecia chiefly caulicolous, irregularly roundish or oblong, 1-2 mm. across, usually 

 crowded and confluent over considerable areas, applanate, orange-yellow fading to pale- 

 yellow, ruptured epidermis usually conspicuous ; paraphyses none, few, or sometimes 

 numerous, not conspicuous, surrounding each individual sorus, erect, exceeding consider- 

 ably the height of the spore-mass, cylindrical, or somewhat clavate, 10-15 by 30-50 j", the wall 

 evenly thin, 1/i, colorless, smooth; aeciospores broadly ellipsoid, or globoid, 13-19 by 19- 

 2S fx ; wall nearly colorless, moderately thick, 2-2.5 z^, finely and noticeably verrucose. 



II. Uredinia hypophyllous, numerous, thickly scattered, round, 0.1-0.2 mm. across, 

 early naked, orange-yellow fading to dirty-white, pulverulent, ruptured epidermis incon- 

 spicuous ; paraphyses encircling the sorus, abundant and noticeable, strongly incurved, 

 terete, or slightly clavate, 9-13 by 39-48 ^, the wall evenly thin, about 1 fi, colorless, smooth ; 

 urediniospores obovate- globoid, 16-18 by 21-24," ; wall nearly or quite colorless, moderately 

 thick, 2-2.5 /i, closely verrucose-echinulate, the pores indistinct, small, scattered. 



III. Telia hypophyllous, at first arising from the uredinia, numerous, thickly scattered, 

 about 0.1 mm. across, but appearing larger on account of the long spreading spores, early 

 naked, chestnut-brown, ruptured epidermis inconspicuous; paraphyses none; teliospores 

 oblong-terete, or somewhat obovate-terete, 28-31by 80-95 ^, usually not narrowed above or 

 below, strongly rostrate, 5-7-celled ; wall chestnut- brown, not very opaque, moderately 

 thick, 3-5 /i, closely and finely verrucose especially above, usually almost or quite smooth 

 below, the apical projection prominent, conical, 14-16 fi long, colored and roughened like the 

 upper cell, except the extreme end which is hyaline and smooth; pedicel once and a half 

 length of spore, the upper half colored next to the spore, 8-10// in diameter, the lower half 

 colorless, not usually narrowed downward, swelling in water, 15-20// in diameter. 



On Rosaceae : 



Rosa Eglanteria 1^. (R. luiea Mill.), Massachusetts, Nebraska. 



Rosa hemisphaerica Herrm. {R. sulphurea Ait.), Nebraska. 



Rosa rubiginosa L. {R. Eglanteria Mill.), Nebraska, New York. 



Rosa spinosissima 1,. {R. pimpinelli/olia L.), West Virginia. 



Rosa sp. cult. , Indiana, Vermont. 

 Type locality : Germany, on Rosa pimpinellifoha. 



