grooves over an inch deep by the motion of the whole 
plant in the breeze, seems to indicate that some individuals 
must reach a considerable age. P. Forresti: in habit 
greatly resembles P. bracteata, Franch., and P. bullata, 
Franch., both of which also affect limestone rocks, and to 
both of which it is morphologically very nearly allied. 
From the former our species is readily distinguished by 
the corolla tube exceeding the calyx, by the longer scapes, 
and by the cordate bases of its larger upper leaves; from 
the latter it is easily separated owing to the fact that the 
bracts, pedicels and calyx are not farinose. The leaves 
when young are sulphur-yellow on the underside, but 
become green beneath as they mature. The plants growing 
at Kew have proved healthy in a cold frame; whether 
they may prove hardy in the open it is not yet possible 
to say. They have thriven well in a loamy soil, forming a 
many-crowned tuft. 
Descoriprion.—Herb, perennial, 6 in. to 3 ft. high, 
densely covered with glandular hairs except on the corolla. 
Lootstock long, stout and woody, clad, especially at the 
apex, with the remains of old leaves. Leaves all radical, 
chartaceous, irregularly twice crenate or almost toothed, 
when young yellow, soon becoming green, beneath; the 
lowest reflexed, ovate-elliptic, obtuse with base cuneate or 
rounded, 14-2 in. long, 3-14 in. wide, the petioles com- 
pressed, 14-14 in. long; the upper erect, oblong, elliptic- 
oblong, or ovate-oblong, obtuse with base subtruncate or 
cordate, 2-4} in. long, 1-2} in. wide, the petioles flattened 
above, convex beneath, 24-34 in. long. Scapes erect, stout, 
3!) in. long, as long as or longer than the leaves; umbels 
simple, many-flowered. lowers sulphur-yellow with a 
deep orange eye; pedicels 1-11 in. long; bracts wide 
lanceolate, leafy. Calye campanulate, 5 lin. long; lobes 
ovate with rounded tips, under 2 lin. long. Corolla with 
a tube 7 lin. long, cylindric at the base, funnel-shaped 
upwards, throat deep orange; limb 2 in. across, lobes 
widely obcordate, sulphur- 2 1 
in At calyx, e, sulphur-yellow. Capsule ovoid, enclose 
Fig. 1, calyx and pistil; 2, th i ion: 3. secti olla ; 
4a tes adored, e same, calyx in section; 3, section of corolla; 
