Dec. 1903 ] Uredineous Infection Experiments in 1903 
235 
sporic host named, in March 1903, which was used with success 
on Chenopodium album L. as the record below shows. Mr. 
Bates originally suggested a probable connection of the Rust 
with the Aecidium on Chenepodium leptophyllum (Moq.) 
Nutt., but as yet no experimental inoculation on this host has 
been published. 
Exp. 220. June 7. Teleutospores applied to Chenopodium album L. 
June 21 , aecidia abundant. 
The following record of failures, significant perhaps in a few 
cases, are here set down without further comment. 
PuCCINIA CARICINA DC. FROM CAREX COMOSA BoOTT. 
Exp. 200. April 5. Teleutospores applied to Urtica gracilis. No infec¬ 
tion. 
PuCCINIA CARICINA DC. FROM CAREX COSTELLATA BrITT. 
Exp. 211. June 6. Teleutospores applied to Urtica gracilis. No infec¬ 
tion. 
Exp. 211. June 6. Same to Ambrosia trifida L. No infection. 
Exp. 213. June 6. Same to Agrimonia parviflora Soland. No infection. 
Exp. 214. June 6. Same to Lycopus americanus Muhl. No infection. 
Exp. 224. June 7. Same to Xanthoxylum americanum Mill. No infec¬ 
tion. 
PuCCINIA CARICINA DC. FROM CAREX CRINITA Lam. 
Exp. 221. June 7. Teleutospores applied to Leptilon canadense (L.) 
Britt. No infection. 
Exp. 230. June 16. Same to Urtica magellanica Poir. No infection. 
PuCCINIA CARICINA DC. FROM CAREX HYSTRICINA MuHL. 
Exp. 201. June 6. Teleutospores applied to Urtica oracilis Ait. No 
infection. 
Exp. 202. June 6. Same to Impatiens biflora Walt. No infection. 
Exp. 203. June 6. Same to Rudbeckia speciosa Wenderoth. No infec¬ 
tion. 
Exp. 204. June 6. Same to Eupatorium ageratoides L. f. No infection. 
PuCCINIA CARICINA DC. FROM CAREX LANUGINOSA Mx. 
Exp. 215. June 6. Teleutospores applied to Urtica gracilis Ait. No in¬ 
fection. 
Exp. 216. June 6. Teleutospores applied to Solidago flexicaulis L. No 
infection. 
Exp. 217. June 6. Same to Carduus altissimus L. No infection. 
Exp. 229. June 8. Same to Leptilon canadense (L.) Britt. No infection. 
PuCCINIA CARICINA DC. FROM CAREX LUPULINA MuHL. 
Exp. 207. June 6. Teleutospores applied to Urtica gracilis Ait. No in¬ 
fection. 
Exp. 208. June 6. Same to Lycopus americanus Muhl. No infection. 
Exp. 209. June 6. Same to Cimicifuga recemosa (L.) Nutt. No in¬ 
fection. 
Exp. 210. June 6. Same to Erigeron annuus (L.) Pers. No infection. 
