PENNELL-—SCROPHULARIACEAE OF THE ROCKY MOUNTAINS. 381 
Type in the U. 8. National Herbarium, no. 1012411, collected on deep clayey loam, 
Battlement National Forest, Colorado, altitude 2,700 meters, in flower, July 15, 1912, 
by A. F. McDuffie (U. 8. Forest Service, no. 7919). 
To be placed in the key before P. scariosus, P. garrettii, and P. cyanocaulis, and to 
be separated as follows: 
Corolla glandular-puberulent externally; pedicels and sepals strongly glandular-pubes- 
cent; inflorescence laxer.........2-.22 eee eee eee eee cece eee e eens P. mensarum, 
Corolla glabrous externally; pedicels and sepals sparsely glandular-puberulent; in- 
florescence more congested....... P. scariosus, P. garrettii, P. cyanocaulis. 
