58 The Ohio Naturalist. [Vol. IV, No. 3, 



Puccinia caricis-solidaginis (on Carex stipata) — aecidia on Soli- 

 dago canadensis. 



Puccinia cirsii-lanceolati (on Carduus lanceolatns) — aecidia on 

 Cardnus lanceolatns. 



Puccinia helianthi (on Helianthus mollis) — aecidia on Helianthus 

 annuus and H. mollis. 



Puccinia liibisciata (on Muhlenbergia mexicana) — aecidia on 

 Hibiscus moscheutos and H. militaris. 



Puccinia lateripes (on Ruellia strepens) — aecidia, etc., on Ruellia 

 strepens. 



Puccinia subnitens (on Distichlis) — aecidia on Chenopodium 

 album. 



ON THE OCCURRENCE OF FOSSOMBRONIA 

 CRISTULA IN OHIO. 



Edo CIvAassen. 



This beautiful liverwort reported, so far as the writer knows, 

 by Underwood from New Jersey only (Gray's Manual, 6th Ed.), 

 occurs in numberless specimens, often associated with Dicranella 

 heteromalla Schimp., on a clayey field southwest of Brookside 

 Park in Brooklyn Township, Cuyahoga County, Ohio. 



Although very small in size it is easily identified by its peculiar 

 thallus and more or less dark purple rhizoids. The description 

 of it in Gray's Botany should, however, be corrected since the 

 pedicel of the capsule when ripe surpasses the thallus consideraby 

 and the elaters contain one or two (mostly two) spirals. 



One specimen was examined more clo.sely as to its dimensions, 

 and was found to be as follows: 



1. Length of longest rhizoid, 1.36 mm. 



2. Length of "rooting " part (broken off at end), 1.36 mm. 



3. Height of plant from uppermost rhizoid on the horizontal 



stem to the top of the split capsule, about 5.1 mm. 



4. Height of plant from uppermost rhizoid to top of thallus, 



2.64 mm. 



5. Length of pedicel (about 0.25 mm. thick) above the thallus, 



1.36 mm.; or of entire pedicel from its origin, 3.4 mm. 



6. Capsule (split and by depression expanded), lieight and 



width, about i.i to 1.2 mm. Capsules of other specimens 

 (not split but ripe and globular in shape), diameter about 

 0.34 to 0.90 mm. 



7. About a dozen spores were measured. Their diameter was 



between 0.044 '^ii<^ 0.048 mm. 



Cleveland, Ohio. 



