20 Mr. Brown’s Account of a new Genus of Plants , 
of Passiflora itself; or of other genera of the order, as Deiclamia , 
in which the inner series of segments is wanting. Thus, they agree 
essentially, and even remarkably, in eestivation of perianthium : 
the corona of Rajfiesia may be compared with that of Murucuia , 
and the two annular elevations at the base of the column with the 
processes of like origin and nearly similar form in some species 
of Passiflora. The affinity is also supported by the position of the 
stamina on a central column. 
The peculiar structure of antherae in Rajfiesia can hardly be 
regarded as an objection of much weight to the proposed asso¬ 
ciation ; and it will at least almost equally apply to any other 
family with which this genus may be compared. 
If the concentric processes on the disk of the column in our 
plant are to be regarded as indications of the number and dispo¬ 
sition of pistilla, or of the internal structure of ovarium in the 
female llower, they present a formidable objection to its affinity 
with Passifloreq , in all of which the ovarium is unilocular with 
parietal placentae. If, however, these processes were considered 
as inner series of imperfect stamina, the objection derived from 
their number and arrangement merely, would be comparatively 
slight; for in some genera of Passiforece , particularly in Smeath¬ 
mannia*, the stamina are also numerous and perhaps even in¬ 
definite. It 
* As Smeathmannia forms a very remarkable addition to the order in which I have 
proposed to place it, and is still unpublished; 1 shall here give its characters, and add 
a few remarks in support of this arrangement. 
SMEATHMANNIA. Soland. Mss. in Biblioth. Bunks. 
Ord. ]N at. Passifloreae. Br. in Tuckey’s Congo, p. 439. 
Syst. Linn. Polyandria Pentagynia. 
CHAR. Gen. Perianthium duplex, utrumque 5-partitum; exterius semicalycinum per- 
sistens; interius petaloideum marcescens. LJrceolus simplex, membranaceus, ex 
ipsa basi perianthii. Stamina numerosa, distincta, apici columnte brevissimae ge- 
nitalium inserta. Styli 5. Stigmata peltata. Capsula inflata, quinquevalvis. 
Semina axibus valvulai'um inserta. 
Frutices 
