28 BULLETIN 179, U. S. DEPARTMENT OF AGRICULTURE. 
Leaves ovate to oblong-ovate or oblong-oval, rarely slightly 
obovate, mostly 6.5 to 10 cm. long, 3 to 6 em. broad, narrowed at the 
base, acuminate at the apex, the margins sharply serrate, appressed 
pubescent above or sometimes glabrous, densely pale soft-pubescent 
below or rarely thinly pubescent, the pubescence usually becoming 
fuscous with age; petioles rather stout, usually 9 to 16 mm. long, 
pubescent or glabrate, eglandular or with one or two glands near the 
apex and the glands often short stalked. Flowers 15 to 20 mm. 
broad, in umbels of 3 to 4, the pedicels 9 to 12 mm. long and glabrous 
or pubescent; calyx usually appressed pubescent or sometimes 
nearly or quite glabrous, the tube campanulate, about 3 mm. long, 
the obtuse lobes as long as the tube, soft-pubescent within, eglandu- 
lar and entire or minutely and obscurely dentate toward the apex, 
reflexed in age; petals oblong oval, 8 to 9 mm. long, narrowed to a 
usually rather long claw. Fruit similar to that of Prunus americana; 
stone 15 to 22 mm. long, 11 to 13 mm. broad, oval and grooved as in 
the species. 
Prunus americana lanata is occasionally found in Illinois, but more 
commonly in southern Iowa and southward to southern Missouri. 
The name Prunus americana lanata Sudworth was based on P. 
americana mollis Torrey and Gray, not P. mollis Torrey, which is 
identical with P. nigra Aiton. 
The subspecies or variety mollis as established by Torrey and Gray 
was evidently intended to include the forms with large pubescent 
leaves and probably included in addition to the present subspecies 
Prunus nigra and P. mexicana. Later authors restricted the name to 
P. mexicana and the pubescent form of P. americana, while Bush and 
Mace2nzie in their use of the name Janata definitely applied it, in the 
‘Flora of Jackson County, Mo.,” to the hairy form of P. americana. 
In the same year these authors (49, p. 83) in another publication 
give the following as the range of P. lanata: ‘‘Common along rivers 
and bottoms from Illinois and Iowa to Missouri, Texas, and Mexico.” 
The inclusion of Texas and Mexico refers to P. mexicana. Torrey and 
Gray did not give the distribution of the variety separately from the 
species which was: ‘‘Banks of streams and in hedges, Canada! (from 
the Saskatchawan!) and New England States! to Georgia and 
Louisiana! and Texas!” There can be no question of the applica- 
tion of the name Janata to this form as a proposed species, and it is 
therefore retained as the name of the subspecies. There is apparently 
no character which is constant and definite enough to distinguish 
this form as a species. The quantity of pubescence is extremely 
variable and though the calyx lobes are usually entire and eglandular 
that is sometimes the case with the species. It is mainly only the 
more marked pubescence, variable though it may be, that can be 
relied on as the distinguishing character. 
