354 
P. tomentosa Dunal in DC. Prod. 13: part 1, 436. 1852. Not 
Medic.,* nor Walt.+ 
Perennial from a creeping rootstock, 3-6 cm. high, densely 
whitish or grayish tomentose with stellate pubescence; leaves 
. rounded cordate or the upper broadly ovate, coarsely sinuately 
toothed ; peduncles 2-4 cm. long, in fruit 4-6 cra. and reflexed; 
calyx densely stellate, lobes triangular, generally a little shorter 
than the tube; corolla 1.5-2 cm. in diameter, bright yellow with 
a purplish center, more or less stellate on the outside; anthers 
yellow or tinged with purple; fruiting calyx 3-5 cm. long, ovoid, 
acuminate, slightly 5-angled and a little sunken at the base. 
P. mollis, in its most typical form, as for instance the type 
specimens of Nuttall and E. Hall, no. 500, is well distinguished by 
its leaves, which are cordate, coarsely angulate-toothed, very 
densely white-stellate and of a firm texture. Often, however, the 
pubescence is less dense and the broad teeth of the leaves less dis- 
tinct and it passes into the first variety. A. A. Heller's no. 1453, 
from Texas, has the broad leaves, the large dentation characteristic 
of P. mollis, but in the thinness of the leaves, the pubescence and 
general habit, resembles more the South American, z. ¢., the typical, 
form of P. viscosa. It must be regarded as a form intermediate 
between the two. 
P. mollis ranges from Arkansas to Mexico. It grows in thickets 
and along streams, but rarely near the coast where its place is 
taken by P. viscosa. The following specimens have been ex- 
amined: RA 
Arkansas : Nuttall, 1834 (type); Bigelow, 185 334. G., no. 304 
and 326; F. L. Harvey, no. 1, 1881; H. E. Hasse, 1886. om 
Texas: Drummond, nos. 205 and 241; Schott; Geo. Thurber, 
no. 43, 1850; E. Hall, no. 500, 1872; F. W. Thuron, no. 16, 1890; 
Crawford, no. 44, 1892. (A. A. Heller, no. 1453, 1894.)1 
Mexico: Gregg, no. 27, 1848-9 ; no. (1 +)$; Bourgeau, no. 112 
(in part) 1865-6; J. G. Schaffner, no. 700, 1876+; Edw. Palmer, 
no. 948, 1880. 
* Act. Acad. Theod. 4: 184. 77. 4. 1780. 
+Fl. Car. 99. 1788. 
S Approaching var. cinerascens. 
