Part 4, 1920] AECIDIACEAE 
Urediniospores medium-sized (16— 
26 X 19-30 p). 
Teliospores 13-24 y broad. 
Teliospore-wall thin, 1 yp. 
Teliospore-wall rather thick, 
-5~2.5 pb. 
Teliospores 16-29 » broad. 
Urediniospore-wall dark-yellow or brown. 
.  Teliospores rather narrow (13-24 ). 
Uredinia usually reddish-brown. 
Uredinia usually light yellowish-brown. 
Teliospores rather broad (18-34 yu). 
Urediniospore-pores 6-8. 
Urediniospore-wall thin (1-1.5 y). 
Urediniospore-wall moderately thin 
(1.5-2 4). 
Urediniospore-pores 8-10. 
Host belonging to family Cyperaceae. 
Urediniospore-pores equatorial. 
Urediniospores with 2 pores (in occasional spores 3). 
Urediniospore-wall moderately thin (1-2 yu). 
Uredinia tardily naked. 
Urediniospores small or medium-sized (13-24 X 
18-35 yx). 
Telia surrounded by a stroma. 
Telia usually raised above the leaf-surface. 
Telia not or only slightly raised above the 
leaf-surface. 
Telia not surrounded by a stroma. 
Telia tardily naked. 
Urediniospores medium-sized (16-21 
X 24-32 p). 
Urediniospores small (13-2118-27 yu). 
Telia moderately early naked. 
Urediniospores rather large (18-26 X 27-37 y). 
Uredinia early naked. 
Urediniospores of the modified sort (amphi- 
spores) unknown. 
Urediniospores of the modified sort (amphi- 
spores) with chestnut-brown wall, thicker 
above. 
Urediniospore-wall moderately thick (1.5-2.5 «or more). 
Urediniospore-wall of uniform thickness. 
Urediniospores medium-sized (16-23 X 23-32 yu). 
Urediniospore-wall finely verrucose-echinu- 
late. 
Urediniospore-wall moderately echinulate. 
Urediniospores very large (26-37 X 35-61 yx). 
Urediniospore-wall frequently thicker above. 
Urediniospores with 3 pores (in occasional spores 4). 
Urediniospore-wall thin (1.5 u or less). 
Teliospores 1-4-celled, chiefly 3-celled. 
Teliospores uniformly 2-celled. 
Teliospores with apex slightly thickened (1.5- 
ph). 
Teliospores with apex considerably thickened 
—5 p). 
Urediniospore-wall moderately thick (1.5 ~ or more). 
Uredinia tardily naked. 
Urediniospore-wall light-yellow. 
Urediniospore-wall brown. 
Urediniospores medium-sized (15-21 X 19- 
4A yp). 
Urediniospores large (16-26 X 22-39 y). 
Teliospore-wall moderately thick (2-2.5 y). 
‘Teliospore-wall moderately thin (1-1.5 x). 
Teliospores large (35-77 u long). 
Telia somewhat tardily naked. 
‘Telia rather soon naked. 
Teliospores small (26-42 » long). 
Uredinia early naked. 
Urediniospores medium-sized (15-21 X 19-32 yw). 
Teliospores moderately small (32—45 u long). 
Urediniospore-wall cinnamon-brown, 
sparsely echinulate. 
Urediniospore-wall light chestnut-brown, 
moderately echinulate. 
Teliospores medium-sized (32-58 u long). 
Teliospores large (45-67 » long). 
Urediniospores large (18-29 X 24-39 yu). 
90. 
91. 
76. 
86. 
88. 
54. 
37. 
85. 
97. 
102. 
98. 
108. 
100. 
109. 
121. 
122. 
ybbs & 
glumarum. 
Hordei. 
. Liatridis. 
. Asperifoliz. 
. Clematidis. 
. holcinum. 
. Majanthae. 
- montanense. 
obtectum. 
. canaliculatum. 
. Scirpi. 
. libertum. 
. angustatum, 
. incompositum. 
atrofuscum, 
. fuirenicola. 
. consobrinum. 
, macrosporum. 
. Cyperi-tageliformis. 
Scleriae. 
. antioguiense. 
. abreplum. 
. Dichromenae. 
. Grossulariae. 
Fuirenae. 
Cyperi. 
. Lysimachiae. 
. Parnassiae. 
. Grossulariae. 
. eminens. 
273 
. Caricis-polystachyae, 
. McClatchieanum. 
. minuium. 
