our plant, which it ought to be remarked must not be 
confused with the very different A. longecaudata from 
Mexico described by Dr. Sereno Watson, which Dr. Rose. 
has more recently renamed A. Pringlei. Already two 
Birthworts with elongated perianth-lobes have been 
described in this work. One of these was figured at 
t. 2545 as A. labiosa, Ker-Gawl.; this species, which has 
the lobe widened and 2-lobulate at the end and of a 
paler ground-colour, was also figured as A. cymbifera, 
Mart. & Zuce., which is the correct name, in the Botanical 
Register at t. 1543. The other species with an elongated 
lobe already figured here is A. grandiflora, Vahl, described 
at t. 4369 ; in this plant the basal portion of the lobe is 
suborbicular, above the base it is suddenly contracted 
into a long tail. The species to which A. longecaudata is 
most closely allied is A. Leprieurii, Duchartre, which 
differs in having the inflated portion of the perianth 
straight. 
Drscription.—Herb, perennial. Stem scandent, spar- 
ingly shortly hirsute. Leaves entire or lobed, more or 
less ovate or oblong, acute or acuminate, base cordate, 
up to 43 in. long, 3-2} in. wide, glabrous above, minutely 
and densely pubescent beneath, 3-nerved, the side nerves 
one-fourth shorter than the leaf-blade, the veins closely 
reticulated; petiole 1} in. long, pubescent. Towers 
solitary, axillary; pedicels 1} in. long, pubescent. 
Perianth of a pale cream ground colour, with brown 
streaks and reticulations externally, basal portion ob- 
liquely jinflated, 12 in. long, about 1 in. wide, with 2 
lateral white-arachnoid patches within; throat densely 
clothed with brown hairs inside ; lobes gradually narrowed 
to ‘the end from a base 11 in. wide, about 8 in. long, 
spirally twisted throughout. Stamens 6; anthers waxy- 
yellow. Ovary 1} in. long, pubescent, slightly sulcate ; 
style-arms 6, obtuse. 
Fig. 1, an entire leaf, from lower portion of stem; 2, portion of the underside 
of a leaf; 8, hairs; 4, one-half of the corolla-tube, laid open; 5, spinose hairs 
in throat; 6, hairs from nearer the base of the tube; 7, hairs of the base, flat- 
adpressed ; 8, stamens and pistil :—all enlarged except 1, which is of natural 
size. 
