JuLy 19, 1923 STANDLEY: TWO NEW GENERA OF RUBIACEAE 293 
of a new genus, since comparison with all the American genera of restricted 
groups of Rubiaceae, to one of which it must belong, shows that it can not 
be referred satisfactorily to any of them. The most noteworthy character 
is to be found in the estivation of the corolla, which is open in all the buds 
upon the single fertile specimen seen. It is probable, however, that the 
corolla lobes, theoretically at least, are imbricate in bud, which would make 
impossible the reference of the genus to the tribe Condamineeae, whose 
genera it resembles in general appearance. In its aspect it strongly suggsts 
Calderonia, to which the writer at first believed that it must belong, but the 
floral details of the two trees are quite distinct. 
One of the striking features of Hxandra rhodoclada is the red coloration 
assumed by the wood upon exposure to the air, a character which it shares 
with Calderonia. ‘This coloration is perceptible also in the petioles and in the 
veins of the leaves after drying. 
In connection with the descriptions of these two new genera there may be 
recorded the rediscovery of a plant described in this Journal* by myself a 
few years ago as a new genus of Rubiaceae, under the name Blepharidium 
guatemalense. The description was based upon a specimen collected in 
forest along the Saklak River below Secanquim, Alta Verapaz, Guatemala, 
in 1905 by Mr. H. Pittier. During May, 1922, I spent several weeks col- 
lecting about Quirigu4é, Guatemala, and on the very first morning that I 
went out collecting this plant was found and recognized. It was seen several 
times in the vicinity, but the season was a little too early for obtaining good 
material, since at this time, the end of the dry season, the flowers were not 
fully developed. Blepharidium guatemalense is a shrub of two to three meters, 
with few branches and large (sometimes 45 cm. long), handsome, glossy 
leaves. It occurs sparingly upon the hills back of the hospital at Quirigud 
at the edge of the pine forest with which their summits are clothed, growing 
in the dense thickets which are characteristic of the cohune (Attalea cohune) 
and pine ridges. The vegetation here bears a striking resemblance, both 
in general appearance and in composition, to that of the pinelands of south- 
western Florida. 
48:59) 01018. 
