178 
NAT. ORDER. RUTACE^. 
villous, tipped with a gland, the lower part erect, the upper half spread- 
ing ; hypogynous disk, an annular, dai'k-green gland ; germen very 
short, abortive, crowned with five lanceolate, fleshy, slightly spreading 
appendages ; style, filiform, curved ; stigma, minute. 
There are, perhaps, few plants that have been long cultivated in 
our collections, which are less understood and which require more il- 
lustration by figures, than the various species of the old Genus Dios- 
ina of the Cape of Good Hope, and which now constitutes a section of 
the Natural Order Eutacece. The individual now figured is an old in- 
habitant of the green-houses, both of this country and England, espe- 
cially die latter, where it has gone under various names, such as 
Diosma crcnata, Diosma latifoUa, Diosma odorata, ^c. Wendland 
figured it under the name of Parapetalifera odorata in his collections, 
but he made it, afterwards, the variety of Diosma serratifolia, and has 
referred to the same variety, the Diosma crcnata, of Linnaeus, &c. — 
But surely if it can be proved to be the Diosma crenulata (not crenata) 
of Linnaeus, that name ought to be adopted in preference to any others ; 
and Linnaeus' description does appear to be so characteristic, that for 
my own part I have no hesitation in preferring the name. My opinion 
is further strengthened by a remark of Sir I. E. Smith, in Rees's Cy- 
clopaedia, where he notices the great affinity of the Diosma serratifolia, 
(a supposed Australian species,) with the Diosma crenata of Linnaeus. 
Of the true Diosma serratifolia, I have only seen cultivated specimens ; 
they have much longer, narrower, and accuminated leaves, marked 
with raised glands on the upper surface, and three distinct nerves ; 
they have decidedly serrated leaves, and always pure white flowers ; 
so that I have no hesitation in keeping these two distinct. If the above 
be correct, I see no impropriety in referring to our Barosma crenulata, 
the valuable properties of which, as an internal medicine, and as an 
outward application, for heaUng lacerated flesh, are well and highly 
Hpoken of by both ancient and modern writers. 
Lastly, I would mention that the Bucku of our Pharmacopaeias, 
which has lately obtained so much celebrity as a sudorific, diuretic, 
