brevioribus, vexillo bicalloso.

In the second edition of Hortus Kewensis, (vol. 4. p. 326), I excluded
from the generic character of Swainsona the calli of the vexillum, having
observed two Australian species where they were wanting, but which in
every other respect appeared to me referable to this genus; for the same
reason I continue to introduce the calli, where they exist, into the
specific characters, as was done in Hortus Kewensis, 1. c. In the generic
character of Swainsona, given in De Candolle's Prodromus, (vol. 2. p.
271), the calli of vexillum are transferred to the calyx; this can only
be regarded as an oversight, which perhaps has been corrected by the
author himself, and which, so far as I know, has never been adopted in
any more recent work in which the generic character of Swainsona is
given.

8. SWAINSONA? (laxa) glabra, caule ramoso, foliis 6-7-jugis; foliolis
oblongo-ovalibus obtusis, racemis elongatis laxis, pedicellis calyce
glabro quinquedentato brevioribus, bracteolis subulatis, vexillo
ecalloso.

LOC. Statio nulla indicata, in Herb. D. Sturt.

OBS. There is something in the aspect of this plant not entirely agreeing
with the other species of the genus; and as the fruit is unknown, and the
flowers yellow, I refer it with a doubt to Swainsona.

PENTADYNAMIS.

CHAR. GEN.--Calyx 5-fidus subaequalis. Vexillum explanatum, callo baseos
laminae in unguem decurrenti. Carina obtusa, basin versus gibba,
longitudine alarum. Stamina diadelpha; antheris 5 majoribus linearibus,
reliquis ovatis. Ovarium polyspermum. Stylus e basi arcuata porrectus,
postice barbatus. Legumen compressum.

Herba (Suffrutex sec. D. Sturt), bipedalis sericeo-incana; caule angulato
erecto. Folia ternata; foliolis sessilibus, linearibus, obtusis. Flores
racemosi, flavi.

9. PENTADYNAMIS incana.

LOC. "On sand-hills with Crotalaria Sturtii." D. Sturt.

DESC. Herba erecta, ramosa, sericeo-incana. Folia alterna, ternata;
petiolo elongato, teretiusculo, foliolo terminali longiore vix unciali.
Racemi multiflori, erecti; pedicelli subaequantes calycem. Bracteolae
subulatae, infra apicem pedicelli, basin calycis attingentes. Calyx
5-fidus; laciniis acutis tubum aequantibus. Corolla flava, calyce plus
duplo longior. Vexillum explanatum, basi absque auriculis sed callo in
unguem decurrenti ibique barbato auctum. Carina infra medium gibba pro
receptione baseos styli. Staminum antherae majores lineares, basi vel
juxta basin affix