RHINANTHACEAE 1203 
Sepals less than half the length of the cap- 
sule: corolla pale violet-purple, ante- 
riorly with nearly or 2 uite distinct fine 
nes: primary peduncles ascending- 
spreading. 
Capsule 5- 7 long: sepals 2-3 mm 
long, Disi to acute: blades of the 
cauline leaves elliptic-lanceolate 
rowly ovate, obtuse to acute. 10. P. brevisepalus. 
Capsule 8—9 long: sep 
long, acute to acuminate: blades of the 
cauline leaves lanceolate, acute to acu- 
nate. 
n 
RB 
. P. pauciflorus. 
Sepals half the length of the capsule or 
more: corolla reddish-purple, on all sides 
with lines that anastomose distally: pri- 
n ET peduncles strongly ascending 
nm 
t2 
. P. australis. 
Corolla unis. orie to the throat closed by the up- 
arching lower lip: anther-saes as wide as long. 
so a throat purplish to violet, the lobes white: 
sepals usually over half the length of the capsule: 
leaf-blades soon glabrous, except for coarse hairs 
beneath on midrib. 13. P. hirsutus. 
Corolla-throat "end lobes white: sepals less than half 
the length of the po leaf-blade es pue HE on 
oth surfaces, only in age becoming nn 14. P.tenuiflorus. 
III. TUvBIFLOR 
Plant glabrous: corolla white, m lobes ie Spreading. 15. P. tubiflorus. 
IV. TIFLO 
Plant glabrous: corolla white, EA e poa campanulate ; 
lobes slightly spreading. 16. P. multiflorus. 
1. P. dissectus El. Stem 3-4 dm. p RU dA gc of the cauline 
leaves bipinnatifid, the Merc linear: ele lax, 1-3 fascicles: sepals 
3—4 eg long, broadly ate, ac e 
m corolla 20-25 mm. long, externally 
ned 
seen.—Gravelly soil and rock- ne 
amd Grit, Coastal Plain, Ga.—Sum 
2. P. Digitalis Nutt. Stem 7-15 dm. tall, 
E e ntly Purple, slightly shin- 
ing: blades 
cent, the Ed S scarious and erose: corolla 
25-40 m m. long, white or ie TN Seren “sometimes slightly lined with 
mparo-purple P capsule 8-9 mm. long.—Fields and poner various 
ae N Ala. to Kans. and Me. Adv. E.—Spr. 
viorum Penn e Stem 6—12 dm. tall, dull , finely pubescent or 
0 
acuminate, the margi "sligl ] . 
white or slightly purplish, somewhat lined with purple within: Er ule not se 
mature.—Meadows, o ially we Mississippi emba in of the en 
Plain, and adj. provinces, Miss. to Ar k., Mo., an I E. 
4. P. Pentstemon (L.) MaeM. Stem 4—10 dm. tall, dull, puberulent to nearly 
glabrous, sometimes slightly purple: blades of the eau line leaves lanceolate, 
finely or ' obscurely serrate, acuminate: panicle lax, of 3-5 pesca: sepals 3-6 
