342 BIGNONIACEAE. 
TEcomA. Yellow Elder. 
(Family Bignoniaceae). 
Soft-wooded shrubs or half- 
shrubs: deciduous. Stems some- 
what quadrangularly compressed 
at the nodes, rather slender: pith 
relatively large, roundish, pale 
brown, continuous. Buds super- 
posed with the upper somewhat 
stalked, flattened-ovoid, with 2 
exposed scales. Leaf-scars oppo- 
site, elliptical, or concave at top, 
low: bundle-trace 1, compound, 
following the contour of the leaf- 
scar: stipule-scars lacking, but the 
leaf-scars transversely connected 
by puberulent lines. (Stenolo- 
bium). 
Numerous misunderstandings 
seem to have arisen as to the 
earlier generic limitations estab- 
lished in the Bignoniaceae, and 
the trumpet creeper, now called 
Campsis, is still known to most people as a Tecoma, while 
these low bushy plants are coming to be known as species 
of Stenolobium. They are not hardy in the North, but their 
compound leaves and large yellow flowers give them an at- 
tractive appearance in the Southwest. Apparently they pro- 
duce medicinally active organic compounds. 
Glabrous: twigs brown, with orange lenticels. (1). T. stans. 
Gray-tomentulose. T. mollis. 
