531 
fore be called Asarum reflexum in allusion to its characteristically 
reflected calyx-lobes. 
The two plants agree in the following characters : 
Rootstock horizontal, branching, jointed, each internode mark- 
ing one season’s growth, and throwing out long ‘fibrous roots ; 
leaves two, rising on long, erect, pubescent petioles from the ends 
of the new shoots, appearing opposite by suppression of the axis ; 
leaf-blades reniform, the innermost in the bud commonly more 
acute than the outer one and often with a shallow indentation on 
either side giving it a slightly three-lobed outline; new shoots 
provided with three large, membranous, alternate scale-like bracts 
subtending minute axillary buds which may or may not develop 
into branches; flower solitary, peduncled in the fork of the 
petioles ; calyx coherent below with the six-celled, many-seeded 
Ovary, campanulate, three-parted with spreading limb, pubescent, 
the tips of the valvate sepals inflexed in the bud ; stamens twelve, 
alternating in a longer and shorter series subequal with the united 
styles and inserted at the base of the column, at first recurved 
against the surface of the ovary, each series finally rising in turn 
against the column, the longer series first ; filaments longer than 
the adnate, extrorse anthers, the connective terminating in a subu- 
late projection ; styles coherent in a column 6-lobed at the apex, 
separating and spreading at maturity, the cells of the Ovary Open 
ing loculicidally ; capsule bursting irregularly and dissipating in 
loose mealy tissue ; seeds ovoid, prominently carunculate. 
ASARUM CANADENSE L. 
Rootstock short, stout, 2.5-15 cm. long, 6-10 mm. thick, 
short-jointed, constricted at the nodes, its branches short, spread- 
ing or reflexed, sub-opposite, often approximate, usually developed — 
only from joints of the preceding season on rhizomes of several 
years’ growth ; joints or internodes puberulent, 1.5-4 cm. long, 
the lower end of each joint contracted, and narrowly scarred from 
the insertions of the fallen bracts ; roots numerous, mostly clus- 
tered at the lower ends of the internodes, often densely matted | 
together ; bracts broadly ovate, more or less puberulent, obtuse, : 
approximate or overlapping, finally loosely spreading and decidu- ~ 
ous ; leaves commonly reniform-cordate, little, if at all, broader 
than long, with a deep, often partly closed sinus, acute or ob- 
tuse at the apex, rugose-veiny, the hirsutulous-puberulent upper 
surface with a satiny lustre, the lower surface somewhat shining 
beneath the close pubescence of minute white hairs ; petioles 3-6 
mm. thick, at first canescent throughout or densely white-pubes- 
cent with short, spreading or slightly reflexed hairs, becoming 
