Arthur: Cultures of Uredineae 
87 
N. J., and sown May 6 on Myrica cerifera, giving rise to pycnia 
May 15, and aecia June 6. This most interesting result was in 
accord with field observations made by Dr. Fromme, who has 
recorded the steps which led to the inference of relationship, and 
has also discussed the results, in a paper^^ anticipating this report. 
The aecia of this species are of the aecidioid form, and not roes- 
telioid, as in the majority of the species of the genus. Moreover, 
the host belongs to a family more divergent from the Malaceae, 
which bears most of the Gymnosporangial aecia, than heretofore 
supposed to be possible. The telial stage was once made the basis 
of a separate genus, Hamaspora, on account of the slender, more 
than two-celled teliospores. Completing a knowledge of the life 
history of a species with so many outlying characters is an espe- 
cially notable achievement. 
Summary 
The following is a complete list of the successful cultures made 
during the years 1912, 1913, and 1914. It is divided into two 
series, species that have previously been grown in cultures and 
reported by the writer or other investigators, and species whose 
culture is now reported for the first time. 
A. Species Previously Reported 
1, (8) and 14. Puccinia Grossul.\riae (Schum.) Lagerh. 
(P. albiperidia Arth., P. qiiadriporula Arth.) — Teliospores from 
Carex arctata Boott, C. crinita Lam., C. pubescens Muhl., and'C. 
tennis Rudge, sown on Ribes Cynosbati L. 
2, 15 and 19. Puccinia extensicola Plowr. (P. Caricis- 
Asteris Arth., P. Caricis-Solidaginis Arth., P. vulpinoidis D. & H., 
P . Dulichii Syd.). — Teliospores from Carex retrorsa Schw., sown 
on Aster paniculatus Lam. ; from Carex scoparia Schk., sown on 
A. paniculatus Lam. and Euthamia graminifolia (L.) Nutt.; 
from Carex vulpinoidea Michx., sown on Solidago canadensis L., 
S. glaberrima Martens, S. rugosa Mill, and S. mollis Barth. ; from 
Dulichium arundinaceum (L.) Britt., sown on Solidago cana- 
densis L. 
<2 Fromme, D. A. A new Gymnosporangial connection. Mycol. 6 : 226— 
230. 1914. 
