pilosule, patentissime. Pedunculi uniflori solitarii axillares ex foliis bre- 
vioribus, teretes, erecti, unciales, pilosuli. Flores elegantes, suaveolentes. 
Calycis pentaphylli foliole lanceolata, acuta, concava, patentissima, ex 
flavo virentia, hirsuta. Pet. 5, calycem superantia, ampla, obversè ovata, 
obtusissima lutea. Anth. oblonge, erecte, lutee. Germ. hirsutum, oblon- 
gum, viride, longitudine staminum. Stylus nullus. Stig. obtusum. Cap- 
sula fusca 4 spinosa. Jacq. l. c. 
The Order ZYGOPHYLLEZ was proposed by Mr. Brown, 
in the Appendix to Flinderss Voyage, and adopted in the 
Prodromus of Mons. Decandolle; who describes it as com- 
ing between Ruraceæ and OxaLipEz ; differing from the 
former by a single style, seed without arillus, a foliage 
more uniformly opposite and furnished with stipules; from 
the latter by the structure of the seed-vessels, which do 
not consist of the elastic cocculi so remarkable in Rutacew. 
The present species is native of South America ; and 
was cultivated by Miller, in the Chelsea Garden, as far back 
as 1752. The popular name of ** Caltrops" has been adopt- 
ed from the seed-vessels of the common European species 
(TrisuLus terrestris), well known to Gerarde and our old- 
est herbalists. The thorns of the seed-vessels are compared 
with the spikes of the instrument called * Caltrops." 
It is with pleasure we find the consummate talents, sa- 
gacity, and industry, with which M. Decandolle is indis- 
putably endowed, directed to an object that they may 
accomplish to the great advantage of science, instead of 
struggling with impossibilities; and we congratulate our 
readers on the appearance of the first volume of the Pro- 
dromus of a general system, in which the known species 
will find a place in their respective divisions, with only a 
short notice of the distinctions, and one or two select 
synonyms. 
D 
The drawing was taken in the hothouse of the Horti- 
cultural Society. 
