1202 RHINANTHACEAE 
ment peer equalling the fertile stamens or longer, with yellow hairs. 
Stigma capit Capsule eonie-ovoid, glabrous, septieidal and secondarily 
slightly qom eeds numerous, angled, wingless.—About 300 species, 
North American.—BEARD-TONGUES 
Leaf-blades of 2 types, the cauline bipinnatifid, those of the basal E oe 
or few-toothed: staminodium conspicuously exserted. I. DIS 
Leaf-blades all entire or o those of the basal rosettes 
tio i 
inflorescence-branches less elongate. 
Corolla pubescent with glandless hairs within over th 
bases of the anterior lobes, the throat well in aad 
leai-blades more or less serrate. II. GRACILES. 
Corolla glandular-puberulent within on all sides, the 
throat slightly inflated : leaf-blades entire or oem So. III. TUBIFLORI. 
xci RE dehiscent by short proximal slits, the distal part 
sae pouch-like: inflorescence- branches elongate. IV. MULTIFLORI. 
I. DISSECTI 
Plant puberulent: corolla purple and lined. 1. P. dissectus. 
II. GRACIL 
cones with throat much inflated, only a dads 2-ridged 
within: anterior lobes little exceeding the posterior: 
: Sr ; 
Corolla 23-30 mm. long: sepals evidently scarious- 
margined : inflorescence of 3-5 fascicles, markedly 
glandular-pubescent. 2. P. Digitalis. 
Corolla 17-23 mm. lon sepals scarcely scarious- 
margined : inflorescence of 5-7 fascicles, glabrous or 
sparsely Cana 3. P. alluviorum. 
nine ES Sor E E less strongly inflated, 
or less violet-purple: sepals ovate-lanceolate to 
n nora attenuate. 
PEDAS ovate- oa ae 3-6 mm. long: corolla 15-20 
lon Med: of the eauline leaves lanceolate, 
metim “na wly . P. Pentstemon. 
Sepals linear: ao long-attenuate, 5-12 mm. long: 
coro -35 mm, lon oe of the cauline leaves 
bro adly lanceolate to OV 5. P. calycosus. 
PORO with throat narrower, o M 2-ridged within: ante 
or corolla-lobes projecti ng considerably beyond the 
uc osterior: staminodium densely bearded. 
Corolla lined with deeper color: i ee to the throat open: 
anther- Le longer than wi 
Lower bracts of dore nce. foliose, Scarcely smaller 
|. than the eme cauline leaf- blades usually tapering 
from a wide base, evenly and sharply serrate: radical 
leaf-blades truncate to cordate at base: corolla 28-35 
mm. long: capsule 0 mm. long. G. P. Smallii. 
HONEI a of inflorescence much 'smaller than the 
1 VS more irregularly or less sharply ser- 
rate: radical leaf-blades narrowed to petiole: 
corolla usually smaller 
Throat a corolla moderately inflated, nearly cylin- 
dric: 
: corolla 20-32 mm. long. 
Leaf- "blades essentially glabrous, deep green 
udis e cauline rather sharply serrate: 
m 2-5 dm ME corolla strongly purple. 7, P. Brittonorum. 
Leaf. “blades somewhat pubescent, dull Pren 
dd 
serrate: S 
corolla pa eue or nearly ud 8. P. canescens. 
n 4 
Corolla SUI. em Tine d with purple: leaves 
e sely and softly pubescent, velvety to the 
9. P. pallidus. 
TOS 'purple or purplish: leaves finely pubes- 
cent or puberulent. 
