122 NORTH AMERICAN FLORA [VOLUME 7 
2. Cronartium Quercus (Brondeau) Schroét.; Sacc. Michelia 2: 308. 1881. 
Uredo Quercus Brondeau ; Duby, Bot. Gall. 2: 893. 1830. 
Peridermium Cerebrum Peck, Bull. Buffalo Soc. Nat. Sci. 1: 68. 1873. 
Cronartium asclepradeum Quercium Berk, Grevillea 3: 59. 1874. 
Accidium deformans Mayr, Wald. Nordam. 119. 1890. 
Accidium giganteum Mayr, Wald. Nordam. 120. 1890.—Bot. Centr. 58: 149. 1894. 
Peridermium deformans Tubeuf, Pflanzenkr. 429, 1895. 
Peridermium giganteum Tubeuf, Phlanzenkr, 429. 1895. 
Aeccidium Cerebrum Dietel, in E. &. P. Nat. Pfl. 1: 79, 1897, 
Cronartium Quercuum Miyabe ; Shirai, Bot. Mag. Tokyo 13: 74. 1899. 
O. Pycnia uncertain. 
I. Aecia caulicolous, forming globoid swellings, 5-25 cm. across, arranged in tortuous 
lines or cerebroid, at first orange-yellow, bladdery, large; peridium colorless, circumscissile, 
soon falling away in flakes or sheets, about 2 cells thick, outer surface smooth, inner ver- 
rucose, cells roundish or irregularly compressed, walls very thick, lumen small; aecio- 
spores obovate, 17-23 by 25-32; wall colorless, uniformly thick, 2.5-3.5, coarsely verru- 
cose, usually with smooth spot at base and extending up one side, tubercles somewhat de- 
ciduous. 
ON PINACEAE: 
Pinus divaricata (Ait.) Sudw. (P. Banksiana Lamb.), Michigan. 
Pinus echinata Mill. (P. mitis Michx.), Arkansas. 
Pinus rigida Mill., New Jersey, New York. 
Pinus Taeda I,., Mississippi. 
Pinus virginiana Mill. (P. inops Sol.), District of Columbia, Maryland, Pennsylvania. 
II. Uredinia hypophyllous, scattered, round, small, 0.25 mm. across, at first hemispher- 
ical, soon dehiscent by apical pore, yellow; peridium delicate or wanting ; urediniospores 
broadly obovate or ellipsoid, 15-20 by 20-324; wall colorless, medium thick, 2-3, evenly 
echinulate with strong short points. 
III. Telial columns hypophyllous, 2-3 mm. long, 150-175 thick, filiform; teliospores 
fusiform or fusiform-oblong, 15-20 by 30-404; wall nearly colorless, rather thick, 2-3 y, 
smooth; sporidia oval. 
ON FAGACEAE: 
Quercus agrifolia Née, California. 
Quercus alba L,,, Alabama, Mississippi, Missouri, New Jersey. 
Quercus Castanea Née, Oaxaca. 
Quercus digtiata (Marsh.) Sudw. (0. faicata Michx.), New Jersey. 
Quercus macrocarpa Michx., Kansas, Mississippi. 
Quercus marylandica Moench, Maryland. 
Quercus minor (Marsh.) Sarg., Alabama. 
Quercus nana (Marsh.) Sarg., New Jersey. 
Quercus nigra I,., Alabama. 
Quercus prinoides Willd., Kansas. 
Quercus Prinus l,., Maryland. 
Quercus rubra J,., Mississippi. 
Quercus tomentosa Willd., Guatemala. 
Quercus velutina Lam. (QO. tincioria Michx.), Minnesota, Mississippi, New Jersey, Penn- 
sylvania. 
Ciena virginiana Mill. (Q. virens Ait.), Florida, Georgia, Mississippi. 
TYPE LOCALITY : France, on Quercus sp. 
DISTRIBUTION : From about the forty-second parallel southward to Florida and Guatemala; 
also in Europe and Japan. : : 
ExsiccaTr: Kellerm. & Swingle, Kan. Fungi 24; Ellis, N. Am. Fungi 022, 1481; Ellis & Ev. 
N. Am. Fungi /88/ ; Seym. & Earle, Econ. Fungi 2//, 215; Ellis & Ev. Fungi Columb. 198; Rav. 
Fungi Car. 3: 35; Rav. Fungi Am. 399; Rab.-Wint, Fungi Eur. 3418. 
3. Cronartium ribicola Fisch. de Waldh.-in Rab. Fungi Eur. 2595. 
(Hedwigia 11: 182.) 1872. 
Peridermium Strobi Kieb. Abh. Nat. Ver..Bremen 10: 153. 1887. 
O. Pycnia caulicolous, scattered, honey-yellow, forming minute bladdery swellings, 
exuding a sweet fluid. 
I. Aecia caulicolous, forming globose galls; peridium inflated, rupturing at sides, thick, 
membranous, cells isodiametric, smooth or nearly so on outer surface, verrucose on inner 
surface; aeciospores ellipsoid, 18-20 by 22-31; wall colorless, coarsely verrucose except 
an elongate smooth spot, 2~2.5 thick, on the smooth side 3-3.5 thick. 
On PINACEAE: 
Strobus Strobus (L,.) Small (Pinus Strobus L.), Europe; not yet foundin America, 
