Ilredinacea?, Gymnosporangium. 613 



basim usque iu filameuta 1 mm. louga, nigricantia (ob ;e.cidiospo- 

 ras fuscas) divisis; teleutosoris ex massis irregulariter auriculifor- 

 mibus, flavo-aureis dein ilavo-brunneis constantibus; teleutosporis 

 late fusoideis utrinque obtusiusculis, 35-60 * 21-30, membrana sat 

 tenui apice non incrassata prceditis, illis serius evolutis paullo bre- 

 vioribus, crassioribus et intensis coloratis. 



Hdb. secid. et pycnid. in foliis Piri Mali, Sorbi Arise et 

 Cham;emespili ; teleutosp. in ramulis Juniperi communis 

 in Germania. 



11. Gymnosporangium exiguum Kern, Bull. Torr. Bot. Club. XXXV 2383 

 (1908) p. 508. — Teleutosoris foliicolis, irregulariter sparsis, ligu- 

 liformibus v. conoideis, parvis v. 5-1 mm. crassis, 1-1,5 mm. altis, 

 castaneo-brunneis ; teleutosporis eilipsoideis, 45-55 « 18-23, apice et 

 basi rotundatis v. interdum conico angustatis; medio non v. vix con- 

 strictis; episporio cinnamomeo-brunneo, 1,5 |j. c. cr. ; pedicello longo, 

 hyalino 5-6 |j.. diam. ; poris germinativis binis juxta septum positis. 



Hab. in foliis ,J u n i p e r i v i r g i n i an ;e , Frederioksburg Texas 

 Amer. bor. (F. Grasso). — A Gymn. Nelso7ii et inconspicuo affine 

 sed satis diversum. 



12. Gymnosporangium floriforme Thaxt. in Kern, Bull. Torr. Bot. Cl. 2384 

 XXXV (1908) p. 503. — Pj^cnidiis epiphyllis, copiosis, gregariis, 



in maculis decoloratis, punctiformibus, flavo-melleis dein nigre- 

 scentibus, subglobosis, 150-175 [j.. diam.; a-cidiis hypophyllis, in 

 greges 2-6 mm. latos in maculis decoloratis circinatim dispositis, 

 primum cylindraceis 1-1,5 mm. altis, 0,2-0,5 mm. diam. ; peridio 

 dein minute fimbriato et distincte revoluto; cellulis peridialibus 

 longis et angustis, 65-85 « 10-14, dein humiditate curvis; secidio- 

 yBporis angulato-ellipsoideis, 23-29 » 18-23 ; tunica castaneo-brun- 

 nea, 1,5-2,5 ;x. cr , minute verrucosa; poris germinativis 6-8, spar- 

 sis; teleutosoris sparsis in gallis globosis v. reniformibus insiden- 

 tibus, conoideis v. cylindrico-acuminatis, demum 3-10 mm. long., 

 1-1,5 mm. latis, castaneo-brunneis dein flavidis et epidermide rupta 

 cinctis; teleutosporis bilocularibus, anguste ellipsoideis, 39-50« 

 15-19, utrinque rotundatis ad septum non v. leniter conatrictis; 

 episporio dilute cinnamomeo-brunneo 1-1,5 [j.. cr., levi ; pedicello 

 hyalino, longissimo, 3-6 ;j.. diam. ; poris germinativis binis ad se- 

 ptum approximatis. 



Hdb. aecidia in foliis Crt;egi spathulatae in Alabama et 

 Arkansas Amer. ; bor. teleutospor;e in foliis ramulisque Juniperi 

 v i r g i n i a nie , Auburn Alabama Amer. bor. 



