APPENDIX. No. V. : 447 
But it is to be observed that this family is composed of two divisions, having 
very different relations to climate; the jirst, with opposite, or more rarely 
verticillate leaves and intermediate stipules, to which, though constituting the 
great mass of the order, the name Rubiacez cannot be applied, being chiefly 
equinoctial ; while the second, or Stellatw, having verticillate or very rarely 
opposite leaves, but in no case intermediate stipules, has its maximum in the 
temperate zones, and is hardly found within the tropics, unless at great heights. 
Hence perhaps we are to look for the minimum in number of species of the 
whole order, not in the frigid zone, but, at least in certain situations, a few 
degrees only beyond the tropics. . 
In conformity to this statement, M. Delile’s valuable catalogue of the plants 
of Egypt* includes no mdigenous species of the equinoctial division of the 
order, and ouly five of Stel/ate, or hardly the one hundred and sixtieth part of 
the Phzenogamous plants. In M. Desfontaines’ Flora Atlantica, Rubiacez, con- 
sisting of fifteen Stellatee and only one species of the equinoctial division, form 
less than one ninetieth part of the Phsenogamous plants, a proportion somewhat 
inferior to that existing in Lapland. 
In Professor Thunberg’s Flora of the Cape of Good Hope, where Rubiacez 
are to Pheenogamous plants, as about one to one hundred and fifty, the order is 
differently constituted; the equinoctial division, by the addition of Antho- 
spermum, a genus peculiar to southern Africa, somewhat exceeding Stellate 
innumber. And in New Holland, in the same parallel of latitude, the relative 
number of Stellatz is still smaller, from the existence of Opercularia, a genus 
found only in that part of the world, and by the addition of which the proportion 
of the whole order to the Phzenogamous plants is there considerably increased. 
More than half the Rubiacee from Congo belong to well known genera, 
chiefly to Gardenia, Psychotria, Morinda, Hedyotis, and Spermacoce. 
Of the remaining part of the order, several form new genera. 
The first of these is nearly related to Gardenia, which itself seems to require 
subdivision. 
The second is intermediate between Rondeletia and Danais, and probably’ 
includes Rondeletia febrifuga of Afzelius.+ 
* Flor. Ezypt. Illustr. in Descript. de ? Egyple, Hist. Nat. v. 2. p. 49. 
+ In Herb. Banks. This is the ‘* New sort of Peruvian Bark ” mentioned in his Report, 
p- 174: which is probably not different from the Bellenda or African Bark of Winter- 
bottom’s Account of Sierra Leone, vol. 2, p- 243. 
