198 AMERICAN JOURNAL OF BOTANY [Vol. 9, 



suspected of harboring cereal rusts in the vicinity of New York City cannot 

 be regarded as accurately determined. 



The herbarium of the New York Botanical Garden contains 17 col- 

 lections of four different species of rusts on cereal grains and grasses which 

 might bear related rusts from the region about New York City, the so called 

 local-flora region, as follows: 



Puccinia rubigo-vera DC. (Puccinia dispersa Eriks. & Henn. ex parte): 

 On wheat, at Cedarville, N. J., June 3, 1880. Ellis collection (II). 

 On rye, at Flatbush, L. I., May 25, 1889, by Zabriskie (II). 

 Puccinia poculiformis (Jacq.) Kuntz (Puccinia graminis Pers.): 



On wheat, at Greencastle, Putnam Co., N. Y., September, 1893, by L. M. Underwood 



(II, HI). 

 On oats, at Greencastle, Putnam Co., N. Y., September, 1893, by L. M. Underwood 



(II, HI). 

 On oats, at the New York Botanical Garden, October, 1900, by the class in mycology 



(II, HI). 



On Anthoxanthum odoratum, at Newfield, N. J., May 4, 1890. Ellis collection (III). 

 On Ammophila brevipile Torr., at Egg Harbor, N. J., 188-, by S. M. Tracy (III). 

 On Agrostis vulgaris L., at Plainville, Conn., August 23, 1883, by A. B. Seymour 



(II, HI). 

 On Poa pratensis L., at Greencastle, Putnam Co., N. Y., September, 1893, by L. M. 



Underwood (III). 



On Berberis vulgaris L., at Newfield, N. J., May 24, 1875. Ellis collection (I). 

 On J). vulgaris, at Newfield, N. J., May, 1881. Ellis collection (I). 

 On B. vulgaris, at Richmond Hill, L. I., May 22, 1889, by S. E. Jelliffe (I). 

 Puccinia andropogonis Schw. : 



On Aureolaria villosa (Muhl.) Raf. (Gerardia villosa Muhl.), at Newfield, N. J., June, 



1874, by Gerard (I). 



On Gerardia quercifolia Pursh., at Westville, Conn., June, 1890, by R. Thaxter (I). 

 Puccinia Ellisiana Thum.: 



On Andropogon sp., at Newfield, N. J., September, 1897. Ellis collection (III). 



On Andropogon Scoparius Michx., at New Haven, Conn., October 4, 1913, by J. M. 



Bates (III). 

 On Viola pedata L., at New Haven, Conn., May 31, 1841, by Manlius Smith (I). 



I have also found the following notes on the occurrence of these forms 

 in the local-flora region. Peck (1871, p. 121), in his list of the Pucciniae of 

 New York State, lists P. coronata Cord, as common on the leaves of grasses 

 and cereals in August and September, and P. graminis Pers. as common on 

 the leaves and sheaths of grasses and cereals in autumn and spring. Thaxter 

 (1890, p. 98) notes the abundant occurrence of P. rubigo-vera DC. (probably 

 P. dispersa Eriks. and Henn.) on rye in Connecticut in the year 1890, 

 describing it as covering the leaves with its rust-covered uredo form and 

 doing considerable damage. 



Humphrey (1891, p. 228) remarks on the occurrence of rust (Puccinia 

 sp.) on rye in Massachusetts in 1891. He records some interesting obser- 

 vations on the mode of wintering over of the fungus. The rust, he notes, 

 appeared on rye in June so abundantly that the spores rose in clouds when 

 the plants were touched. In July this stage of the fungus had largely 



