UREDINACEAE 417 



prominent, epiphyllous, rarely on fruit or branches, rather 

 large, in small groups on yellow or rufescent spots ; sporules 

 minute, pale orange ; aecidia hypophyllous, opposite the 

 spermogonia, forming large, convex tubercles, numerous, 

 yellowish, ventricose, 2 mm. long, i-i '5 mm. broad, apex 

 closed, sides perforated or subcancellate ; aecidiospores 

 in chains, 22-44X17-26, brownish, angularly rounded, 

 delicately warted ; sori of teleutospores irregularly conoid 

 or cylindrical, obtuse, sometimes compressed or branched, 

 yellowish-rufous, gelatinous, 8-10 mm. long; teleutospores 

 ellipsoid 38-50X23-26 fjt ; scarcely constricted at the 

 septum, chestnut-brown, each cell having four germ-pores. 



Gymnosporangium juniperinum, Fries, Sysi. Myc, iii. 

 p, 506. — Spermogonia epiphyllous, rather large, sub- 

 prominent, conoid, brownish-orange, in small groups on 

 yellowish or orange spots; pseudoperidia hypophyllous, 

 aggregated, tubular, cylindrical, very long (up to 8 mm. 

 long and i mm. wide), seated on orange spots, incurved, 

 whitish, then yellowish, margin denticulate, spreading; 

 aecidiospores in chains, angularly spherical, brownish- 

 yellow, 20-28X10-24 /i, delicately verruculose, with six 

 germ-spores ; sori of teleutospores simple or caespitose, 

 subgelatinous, hemispherical or conoid, tawny, becoming 

 swollen, orbicular, piriform, etc., in damp weather, golden, 

 finally wrinkled and collapsed; teleutospores ellipsoid or 

 oblong, ends attenuated, 40-75X17-27 /i, not constricted 

 at the septum, slightly tinged brown, pedicel very long. 



Gymnosporangium clavariiforme, Rees, Wint., Krypt.-FL, 

 j_ p_ 233. — Spermogonia epiphyllous or fruticolous, erump- 

 ent from a thickened, orange or yellow patch, spermatia 

 yellow, oblong; pseudoperidia springing from coloured 



2 D 



