Mr. J. Miers on the genera Hyoscyamus and Physochlena. 471 
tibus ; calyce fructifero inflato, glabro, capsulam dimidio mi- 
norem claudente.—Siberia, in montibus Altaicis, et planitiis 
Songariz.—v. s. in herb. Hook. e locis citatis. 
This plant scarcely exceeds the height of 6 or 8 inches, and 
may at once be distinguished from all others by the smallness of 
its leaves, and of its stature and its tuberose root: its leaves are 
% inch long and 7 lines broad ; they are subcordate or auriculate 
at base, tapering suddenly, and decurrent on the petiole of equal 
length. The flowers are capitato-corymbose; the pedicels and 
calyx are clothed with long cottony hairs, which are articulated, 
but apparently not viscous ; the calyx is 3 lines long, the corolla 
6 lines, the former growing to a length of 8 lines, being 3 lies 
broad in the mouth, ‘and 5 lines diameter in the swollen middle ; 
it is of transparent texture, smooth, marked with numerous reti- 
culations, and with ten longitudinal nervures ; the berry is about 
3 lines in diameter, subglobose, with a small flattened operculum. 
2. Physochlena Dahurica ;—caule violascente, foliis deltoideo- 
ovatis, acutis, basi auriculato-cordatis, hine subito acuminatis, 
et in petiolum crassum decurrentibus, rachi venisque purpu- 
rascentibus, utrinque glaberrimis; panicula terminali, lanato- 
pilosa, genitalibus inclusis—Dahuria, v. s. in herb. Hook. (Hy- 
oscyamus physaloides, Turczaninow). 
This plant differs from the preceding in its more fleshy habit, 
its leaves bemg much larger, more deltoid, more acute at the 
apex, broader at their base ; they are 13 inch long, 13 inch broad, 
on a fleshy petiole 11 inch long. 
3. Physochlena rubricaulis. Hyoscyamus physaloides, Sweet, 
Brit. Fl. Gard. i. tab. 12;—caulibus crassis, subprostratis, sub- 
flexuosis, rubescentibus, nodis cupularibus cum petiolo arti- 
culatis ; foliis oblongo-ovatis, acutis, repando-undulatis, basi 
obtusis, in petiolum crassum canaliculatum longe decurren- 
tibus, utrinque glaberrimis ; racemo corymboso, terminali 
rufescente, paucifloro, pedicellis incurvis, calycibusque fuscis 
dense glanduloso-pilosis, corolla glabra, purpurascente, laci- 
niis ovatis, rotundatis, staminibus inclusis, stylo declinato ex- 
serto recurvo.—v. s. in hort. Kew. cult. 
This plant has a fusiform root: its stems are fleshy, somewhat 
flexuose, with internodes seldom more than half an inch apart ; 
its leaves in shape much resemble those of P. Dahurica ; they are 
2 inches long, 14 inch broad, gradually tapering upon a fleshy 
petiole 14 inch in length ; this as well as the thick fleshy midmb 
and prominent nerves are of a dark reddish purple colour ; in 
drying, the blade of the leaf becomes yellow. Its inflorescence 
is much shorter, fewer-flowered, and covered with dense short 
