322 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
indicated, counties from which specimens have been seen are stated. 
Under Chionophila, a monotypic genus, no specimens are cited, but 
for a plant so local it is of interest to know the peaks upon which it 
occurs. For these genera the numbers of my own collections are 
iven. Under Penstemon, a genus of many species and these much 
confused, it has been thought best fully to cite localities and speci- 
mens seen, the latter one to a county. All care has been taken to 
attribute localities to their proper county, but in this there is neces- 
sarily some possibility of error. The county is used as a logical, 
easily located unit of area. The name of each county is followed 
by a colon, and throughout county names are in alphabetical sequence. 
SYSTEMATIC TREATMENT. 
VERBASCUM L. 
KEY TO THE SPECIES. 
Leaves green, dentate, amare not decurrent; stem (above) and calyx with simple 
glandular hairs; inflorescence lax; pedicels 10 to 15 mm. long; sepals lanceolate, 
5 to 6 mm. long, much parte: than the capsule; corolla 25 to 30 mm. wide, yel- 
low or white; filaments all densely lanose with knobbed purple hairs; capsule 
7 to 8 mm. long, glandular-puberulent; seeds dark gray, 0.8 yi 0.9 mm. long. 
V. blattaria. 
woolly with stellate-branched iis tela hairs; inflorescence densely 
_ crowded; pedicels very short or none; sepals ovate, 6 to 8 mm. long, slightly 
shorter than or equaling the capsule; corolla 20 to 22 mm. wide, always 
low; 3 posterior filaments lanose with filiform yellow hairs, the 2 anterior 
cities glabrous; capsule 6 to 8 mm. long, “este Supe te me brownish 
gray, 0.4 to 0.5 mm. long. V. thapsus: 
1. Verbascum blattaria L. 
Fields and roadsides; rare (Boulder, Colorado, Osterhout 2462). Introduced from 
E ; : 
2. Verbascum thapsus L. 
Fields and roadsides; frequent (Pennell 5958, 6116). Introduced from Europe 
LINARIA L. 
KEY TO THE SPECIES. 
Corolla (excluding spur) 15 to 18 mm. long, yellow, the posterior lip arched over the 
ceeding th < ; 
larly and broadly winged; stem 30 to 100 cm, tall, densely leafy; a ee : 
2, 
Corolla (excluding spur) 14 to 17 mm. long, blue, the posterior lip aie 
one broadly spreading but not forming a raised palate, the spur piesisioe 
throughout; capsule 2 to 3 mm, long, equaling or ‘slightly exceeding obtuse 
sepals; style 1 to 1.5 mm. long; seeds 0.3 to 0.4 mm, long, cylindric, 
a oon, ate _ winged; stem slender, 20 to 80 cm. tall, lem 
FOC ees as nS 2. L. 
