RYDBERG: NOTES ON ROSACEAE 61 
of the plant in the province of Upland, north of Stockholm, and 
stated that it grew along margins of fields. Wahlenberg, both 
in his Flora Upsaliensis and in his Flora Suecica, identified it with 
R. majalis Retz. and R. cinnamomea Sm., which is the same as 
R. cinnamomea of the second edition of the Species Plantarum; 
he even adopted the name R. spinosissima. 
In the tenth edition of his Systema, Linnaeus placed R. 
spinosissima in the second division, i.e., with the species having 
ovate fruit, while he placed R. pimpinellifolia in the first division 
with suglobose fruit. In the second edition of the Species Plan- 
tarum, he added nothing to what he had in the first edition except 
one sentence from the Systema. In his second Mantissa, he 
seems to have changed his views altogether. Under R. pimpi- 
nellifolia he made the following remark: ‘‘Cum R. spinosissima 
_ eadem facit Hallerus.”” Evidently on account of Haller’s inter- 
pretation, he adopted the name R. spinosissima for R. pimpi- 
nellifoia, He omitted all his previous synonyms, cited ‘“ Clus. 
hist. 1. p. 116,” and made a new description, incorporating in it 
not only a globose fruit, but white petals, yellow at the base, 
characters all belonging to R. pimpinellifolia. 
Rosa spinosissima (R. cinnamomea of the second edition of the 
Species Platarum) is in cultivation, and has been found occasionally 
escaped in the northeastern part of this continent, and also in 
Wisconsin. 
32. ROSA PALUSTRIFORMIS Rydberg 
This species was discovered by Dr. Schuette of Green Bay, 
Wisconsin, who distributed it under an untenable manuscript name. 
In habit, pubescence and prickles, it strongly resembles R. palustris, 
but the hypanthium and sepals are in form and size like those of 
R. blanda. The sepals are erect and persistent in fruit, while 
the hypanthium is glabrous, not glandular-hispid. At first I 
thought that it might be a hybrid between the two species, but 
it has one feature not found in either—the sepals are wholly without 
glands on the back, only with a few gland-teeth on the margins. 
In both R. palustris and R. blanda, the sepals are glandular on 
the back. The description in the North American Flora was 
drawn from the specimens in the Gray Herbarium. Those 
