FAMILIES OF PLANTS 
39 
Yellow fritillary ( Fritillaria pudica) grows from 5 to 10 inches high 
and often there is only one flower, though there may be as many as 
six. The nodding flowers are 
yellow or orange and tinged 
with purple. It is also called 
“ Yellowbell.” 
Purple fritillary ( Fritillaria 
atropurpurea) is similar, but is a 
somewhat larger plant, and the 
flowers are dull purple more 
or less spotted with yellowish 
green. 
Glacierlily (E ryt hr o nium 
grandiflorum) —This plant has 
a deep-set bulb and only two 
smooth, flat, shining leaves which 
are 5 to 7 inches long and sheathe 
the base of the naked stem. 
The stem is 5 to 15 inches high 
and bears one or more bright 
yellow nodding flowers. The 
parts of the perianth are curved 
back at the end. The flowers 
bloom very early while the snow is still melting. 
Dogtooth violet. 
Figure 20.—Yellow fritillary or Yellow- 
bell. Yellow. Photograph by A. R. 
Sweetser. 
Often called 
Figure 21.—Glacierlily. Yellow. Photo¬ 
graph by Geoffrey Coope. 
hairy and somewhat sticky toward 
narrow and grasslike. 
Beargrass ( X erophyllum 
tenax.) —This interesting plant, 
which of course, is not a grass but 
a lily, has been found only in lim¬ 
ited areas in the southern part of 
the park. It grows 2 to 4 feet 
high and bears a large compact 
cluster of showy white flowers. 
The stem is thickly beset with 
needlelike leaves, the lower of 
which are often 2 or 3 feet long 
while the upper are reduced to 
bristlelike bracts. 
Tofieldia intermedia.—A plant 
with fibrous roots and a tuft of 
slender, unbranched stems, each 
bearing a small cluster of yellow 
flowers. The stem is somewhat 
the upper end, and the leaves are 
