JuLY 19, 1923 STANDLEY: TWO NEW GENERA OF RUBIACEAE 291 
Type (a flowering specimen) in the U.S. National Herbarium, no. 1,151,718, 
taken from a tree planted in the street in front of the Santa Tecla Railway 
station, in San Salvador, Republic of Salvador, July, 1922, by Dr. Salvador 
Calderén (no. 761). 
Additional specimens examined: 
SALVADOR: San Salvador, December, 1922, Calderén 761 (fruiting speci- 
mens from the type tree). Tonacatepeque, Departamento de San Salvador, 
December, 1921, Standley 19499. Nahulingo, Departamento de Sonsonate, 
alt. 220 meters, March, 1922, Standley 22052. Sonsonate, alt. 220 meters, 
March 1922, Standley 22312. 
GuATEMALA: Patalul, Departamento de Sololé, February, 1906, Kellerman 
5986. 
The genus Calderonia belongs to the tribe Condamineeae of the family 
Rubiaceae. In the key to the genera of this group published a few years 
ago by the writer,? it would run at once to Picardaea, a West Indian genus 
to which it is not closely related. Calderonia differs from Condaminae 
in its winged seeds; from Chimarrhis in its terminal inflorescence; and from 
Rustia in the dehiscence of the anthers. The absence of endosperm in the 
seed is probably an important character. The Salvadorean tree appears 
to represent an unusually well marked genus of the Rubiaceae. 
Calderonia salvadorensis is known in Salvador by the vernacular names of 
campeche, brasil, and palo colorado, and at Sonsonate I was informed that 
the names drago and sangre de chucho (‘‘dog’s-blood”’) were applied toit. The 
names palo colorado, drago, and sangre de chucho doubtless allude to the 
fact that all parts of the plant quickly assume a reddish tint when cut. This 
is particularly noticeable in the wood, but the leaves also are often affected 
the same way in drying. 
The wood is said to be of good quality and is employed for building pur- 
poses and for firewood. By its peculiar color it is easily recognized. This 
red coloration is a property of other woods produced by trees of the same 
family, as, for instance, Genipa maxonii Standl., of Panama. Dr. Calderén 
in a recent letter says: ‘‘Lately I saw the wood used for rafters in a country 
house being built near Sonsonate, and in a building under construction in 
that city. Some time ago on the shore of Lake Ilopango, at a locality known 
as Apulo, I saw a large quantity of sawed timbers at least 45 cm. wide and 
7 meters long or more, of pink wood, to which the name of quina was given. 
I do not know whether the tree from which they were obtained was the same 
as my No. 761, but the appearance of the wood was identical. The trees 
which I have seen are smaller, but in the wild state it would not be strange 
to find them large enough to give lumber of the dimensions I have described.” 
The name quina (‘quinine’), it may be remarked, is one often given in 
Salvador and elsewhere in Central America to Rubiaceous trees because 
their bitter bark is employed locally in place of the imported quinine. 
The tree, Dr. Calderén states, is common in the fincas about San Salvador, 
2.N. Amer. Fl. 32:4. 1918. 
