84 
NEW SYLVA 
rhomboidal, base acute, flowers in simple lax 
nodding racemes, white odorous, pods smooth* 
—From Kentucky to Alabama, but very local, 
a fine tree 30 to 50 feet high, branches brittle, 
wood branches petiols and nerves yellow, leaves I 
ample, folioles 3 to 6 inches long very smooth. 
Flowers white fragrant like those of Robinia, 
not yellow as stated by Nuttal and after him by 
many, even Decandole ! Michaux does not say 
so, in his colored trees they are white, his im- 
proper name lutea applied to the wood not the | 
flowers, Nuttal did not see the flowers and mis- 
took his meaning. 1 have seen them ! The 
wood is yellow and dies yellow like Fustic. 1 
The vulgar names are yellow wood and yellow l 
Locust. The Y. Kentukensis of Dumont Cour- 
set (Botaniste cultivateur) is only the young J 
tree before blooming. It blossoms only in May 
for one week on the banks of the River Ken- 
tucky. I shall add two other new Genera i 
rather akin but with yellow and blue flowers. 
They all belong to the Leguminose, suborder 
Lomentaria with free stamens, and natural 
family of Sophorides. 
701. ZANTHYRSIS. Raf. calix persistent 
campanul. equaly 5dentate, petals 5 subequal 
cuneate obtuse, 1 narrower, 10 stamens sube- 
qual, pistil stipitate, podogyne villose longer 
than calix, ovary smooth terete curved, style 1 
very short, stigma acute, pod stipitate podo- 
gyne tomentose, pod falcate subterete, seeds . * 
Tree with odly pinnate leaves , no bracts , 
ihyrsoidal yellow flowers — This Genus is ■'$ 
nearer Sophora than the last, but has some very 
peculiar characters, the name applies to the 
yellow thyrsus. 
/ 702, Zanthyrsis paniculata Raf Virgilia || 
