99 
Since the resuscitation of Chrozophora it has been usual to 
enumerate five forms with characters that mark them as members 
of this group. In 1826 Sprengel cited the four mentioned by 
A. Jussieu as Chrozophora tinctoria, i.e. Croton tinctorium, 
Linn. (1753) ; obliqua, i.e. Croton obliquum, Vahl (1790) ; verbas- 
ctfolia, i.e. Croton verbascifolium, Willd. (1805); and oblongi- 
folia, i.e. Croton oblongifolium, Del. (1812); but added a fifth, 
booth 
hierosolymitana, i.e. Croton oblongifolium, Sieb. , nou 
Del. In reality, therefore, Sprengel dealt with only four dis- 
tinct members of the group Tinctoriae. e five enumerated by 
Baillon in 1858 were :—Chrozophora integrifolia, Bunge (1851); 
tinctoria, i.e. Croton tinctorium; obliqua, i.e. Croton obliquum; 
verbascifolia, i.e. Croton verbascifolium; and oblongifolia, i.e. 
Croton oblongifolium. Though the list of Baillon agrees as 
regards number of species with that provided by Sprengel, the 
species are not the same. Baillon has not accounted for Chrozo- 
phora hierosolymitana, and as C. integrifolia is merely a new 
name for the species to which the two names obliqua and verbasci- 
folia alike belong, we have in his list only three species of the 
group Tinctoriae. 
In 1866 Miiller only recognised two species, Chrozophora tinc- 
ua. As, however, he has, under C. tinctoria, 
Miill.-arg., discriminated four varieties, viz. :—verbascifolia 
are legitimate and valid; it has the disadvantage as compared 
with theirs that C. obliqua 
mitana; his last form and third species, C. obliqua, is not the 
plant so named by Jussieu, but that so named by Miiller. In 
: p2 
