FAMILIES OF PLANTS 
111 
Mimulus langsdorfii.— -This is common in wet places and often 
grows close to the hot springs where the hot vapors would be ex¬ 
tremely uncomfortable to a human being. The stems vary from 8 
to 30 inches high, and the opposite 
leaves are round or ovate, petioled, 
and toothed. The corolla is yellow 
and two-lipped and usually spot¬ 
ted with dark red. 
Lewis monkeyflower (Mimulus 
lewisii) is usually found along 
mountain streams. The flowers are 
similar to those of the preceding 
species, but they are larger and 
rose-red or purplish. 
Mimulus nanus is another spe¬ 
cies with rose-colored flowers which 
grows only a few inches high but 
often forms dense beds. 
Mimulus rubellus has been re¬ 
ported in the park, but there is some 
doubt as to whether it really occurs. 
Mimulus geyeri , M. guttatus , 
and Muskplant (M. moschatus) f iguek87. —Monkeyflower. Yellow. Copy- 
have also been reported in the park. right ’ J ' E ' Haynes ‘ 
Fernleaf (Pedicularis) , also called Lousewort.—-These plants are 
usually easily recognized by the fernlike leaves and spikes of irregu¬ 
lar flowers with four stamens and a two-lipped corolla. Those 
commonly seen in the park may be distinguished by means of the 
following key. 
1. Flowers white. Pedicularis 
racemosa. 
1. Flowers yellow. Pedicularis 
bracteosa. 
1. Flowers purple or purplish. 2. 
2. Flowers shaped like an ele¬ 
phant’s head with ears and 
trunk. Elephanthead (Pe¬ 
dicularis groenlandica ). 
2. Flowers not shaped like an 
elephant’s head. 3. 
3. Calyx deeply cleft on one side. 
Pedicularis ctenophora. 
3. Calyx nearly equally 5-toothed 
or lobed. 4. 
4. Calyx-lobes about the same length as the tube. Pedicularis cystopteridifolia. 
4. Calyx-lobes much shorter than the tubes. Pedicularis scopulorum. 
Figure 88. —Lewis monkeyflower. Rose-red. Pho¬ 
tograph by Joseph S. Dixon, National Park 
Service. 
