(467) 



For the aecia: unknown. 



For the telia: Chamaecy parts tkyoides (L.) B.S.P. (Cupressus 

 thyoides L., Chamaecyparis sphaeroidea Spach.). 

 Type locality: New-field, N. J., on living white cedar [Chamae- 

 cyparis thyoides}. 



Distribution: Along the Atlantic coast from Massachusetts 

 to Delaware, also in northern Florida and southern Alabama. 



Illustrations: Farlow, Anniv. Mem. Boston Soc. Nat. Hist. 

 pi. 2, f. 13-17. 



Exsiccati: Rab.-Wint. Fungi Eur. 2Q20; Thiim. Myc. Univ. 

 1936; Roum. Fungi Sel. 4921; Seym. & Earle, Econ. Fungi 246; 

 Ellis & Ev. Fungi Columb. 55; Ellis, N. Am. Fungi 271. 



33. Gymnosporangium Betheli Kern, Bull. Torrey Club 34: 



459- 1907 

 Roestelia Betheli Kern, Bull. Torrey Club 34: 461. 1907. 



Aecia fruiticolous and hypophyllous, densely crowded, usually 

 occupying only part of the surface of the fruits, in small groups on 

 the leaf blades, cylindric, 0.2-0.3 mm. in diameter, 3-8 mm. high; 

 peridium becoming finely lacerate above, often nearly to base, 

 spreading; peridial cells long and narrow, curving 

 somewhat when wet, broadly lanceolate in face view, £$&? 



20-25X60-90/*, linear in side view, 13-20/4 thick, f^W 



outer wall 1-1.5/i thick, smooth, inner and side j&jg 

 walls 4-6/1 thick, rugose with closely set linear ridges te||j 

 and a few interspersed elongate papillae; aeciospores f^ffl 

 globoid, 18-24X23-30^, wall chestnut brown, 2.5-3/i V?§^ 



Telia caulicolous, appearing on irregulai 

 gall-like knots usually breaking forth in s 



along the branches and varying greatly in size and no. 29. u. 

 extent, unevenly disposed, wedge-shaped, 1-1.5 mm - Betheli. 

 broad by 1-3 mm. long at the base by 3-4 mm. 

 high, chestnut-brown; teliospores 2-celled, ellipsoid, 17-25 X37-53/*, 

 rounded or somewhat narrowed above and below, slightly or not 

 constricted at the septum, wall dark cinnamon-brown, i-2/* thick; 

 pores 2 in each cell, near the septum. 



For the aecia: Crataegus coloradensis A. Nels., C. chrysocarpa 

 Ashe, C. erythropoda Ashe (C. cerronis A. Nels.), C. 

 Douglasii Lindl., C. occidentalis Britton, C. rivularis Nutt., 

 C. saligna Greene. 



