Part 3, 1912] AKCIDIACEAB 187 



^btis iffff^Ltni. ^^' ^i^^j^f^«^^"^ A. Gray, not I..; R. procumbens Muhl.), Massacliiisetts. 

 Typp ^r!r AT tXS^ ^^^"^A ^ Sclilecht. , California. 



Maine and ^^n?i«a.i,?T^^''lny"^^^ ^'"^"^ I/Juisiana, Arkansas and Iowa to Florida and 



Exsicc/?! P^ T/i^ ^ X? ^.^^'^^ ^°^* ^" California ; also in Europe. 



^^rp^lTc.^^l%f^^^ Seli^n.^"ol!J>fI^^i fir- "^ ^^''^^ ^^^^^ ^-^^^^^' ^^^' ^^' ^^^^■ 

 Illustrations : Jul. Miill. Rostpilze (Inaug -Diss.)/. P, 7^, i?. 



4. Kuehneola malvicola (Speg.) Arthur. 



Vrlff. ^'^i^^'^^^f^ Spegr. Anal. Soc. Ci. Argent. 17 : 124. 1884. 

 Uredo Htbtsct Sydow, Hedwigia Beibl. ^ : 128. 1901. 



O. Pycnia not seen. 



II. Uredinia hypophyllous, numerous, scattered over entire leaf, often crowded, irregu- 

 larly orbicular, bullate, 0.2-1 mm. across, size varying on different hosts, tardily naked, 

 pulverulent, cinnamon-brown, ruptured epidermis usually conspicuous and often over- 

 arching ; paraphyses f ew, peripheral, not reaching above the spore-mass, cylindrical, often 

 slightly incurved, 9-13 by 45-60 /i, the wall uniformly thin, Ifi or less, colorless, smooth; 

 urediniospores ellipsoid or broadly obovate, 15-19 by 19-26 /J.; wall light gold en -yellow, 



1-1.5 fi, finely and closely echinulate, the pores indistinct, 2, opposite, equatorial or slightly 

 above. 



III. Telia hypophyllous, few, scattered, punctiform or orbicular, 0.1-0.3 mm. across, 

 becoming prominent and apparently much larger by the long spreading spores, early 

 naked, pulvinate, dark cinnamon-brown becoming whitish by germination, ruptured epi- 

 dermis inconspicuous ; teliospores terete, 15-19 by 77-150 fi, rounded above, tapering below, 

 slightly constricted at septa, 4-12- (usually 8-10- ) celled; wall light cinnamon-brown, thin, 



1 ^ or less, not or only slightly thickened at apex, smooth ; pedicel indistinguishable. 



On Malvaceae : 



Hibiscus Syriacus Iv., I^ouisiana ; Cuba. 



Malvaviscus arboreus Cav., Guatemala. 



Malvaviscus Drummondii T. & G., Texas. 

 Type locality : Cerro Hu, near Paraguari, Paraguay, on ''Abutilon sp." 

 Distribution : Southern United States bordering the Gulf of Mexico, southward in the West 

 Indies and Central America ; also in South America. 

 ExsiCCATi : Kllis & Kv. N. Am. Fungi 2408. 



5. Kuehneola Gossypii (I^agerh.) Arthur. 



Uredo Gossypii Ivagerh. Jour. Myc. 7 : 48. 1891. 



O. Pycnia not seen. 



II. Uredinia at first (primary) epiphyllous, rather deep-seated in the tissues, soon 



^ secondary) hypophyllous, more shallow, scattered over the leaf, or somewhat grouped on 

 purplish spots 1-5 mm. across, bullate, roundish, 0.1-0.5 mm. across, tardilynaked, slightly 



pulverulent, brownish-yellow, ruptured epidermis overarching and conspicuous ; paraphyses 

 with secondary uredinia numerous, peripheral, appearing somewhat higher than the spore- 

 mass, more or less clavate, usually incurved, 7-15 by 45-65/^, the wall uniformly thin, 1/^ or 

 less, colorless, smooth; urediniospores ellipsoid or broadly obovate, 16-19 by 19-27//; wall 

 pale-yellow or nearly colorless, thin, 1-1. 5/^, rather closely and noticeably echinulate, 

 points 1-1.5 /^ apart, the pores inconspicuous, probably 2, equatorial. 



III. Telia rare, hypophyllous, deep-seated in the tissues, scattered, not readily distin- 

 guished from uredinia, tardily naked, somewhat pulverulent, light cinnamon-brown, rup- 

 tured epidermis somewhat overarching and noticeable ; teliospores in adhering chains, cyl- 

 indrical, 10-13 by 80-110 //, 5-8- (usually 7- ) celled, the cells angularly and irregularly oblong, 

 24-32^ long, separating readily at surface of sorus ; wall pale golden-brown, moderately 

 thin, about 1.5/^, thicker above, 3-6/^, smooth; pedicel indistinguishable. 



On Malvaceae : 



Gossypium acuminatum Roxb., Florida; Cuba. 



Gossypium arboreum ly., Florida. 



Gossypium hirsutum L., Florida; Porto Rico. 



Gossypium mexicanum. Tod., Florida. 



Gossypium. microcarpum Tod., Florida. 



Gossypium, peruvianum Cav., Florida. 

 Type locality: Balsapamba, Ecuador, on G^oJ^j'^iMW sp. ^ , ^ . , ^ ,. 



Distribution : Southern Florida and West Indies ; also in South America and India. 

 Exsiccati : Barth. Fungi Columb. 2489. 



