the REST of the pictures on this page will give you a better overall feel for this wood
catalpa / Catalpa spp.
Catalpa spp. of the family Bignoniaceae. Includes at least Catalpa bignonioides and Catalpa speciosa and that is for the species in the USA. Worldwide, there are numerous other Catalpa species.
2" x 2" flat cut, 2" x 2" quartersawn, 1" wide end grain, and a 1/4" x 1/4" end grain closeup.
The catalpas that are native to the USA are Ring porous with 3 to 8 rows of large earlywood pores with heavy vasicentric parenchyma and latewood pores that are usually much smaller than the earlywood pores but sometimes not much smaller but in either case they usually have significant vasicentric parenchyma. The transition from large earlywood pores to smaller latewood pores is often quite gradual. There are usually wavy tangential bands of pores in the last part of the latewood, with confluent parenchyma. Rays are barely visible at 10X and are tightly spaced.
Some of the other catalpas, for example Cuban catalpa / Catalpa punctata and Haitian catalpa / Catalpa longissima which are both shown on this page, are diffuse porous and have slightly more prominent rays.
That raises the question of how the species that are ring porous and those that are diffuse porous got lumped into the same genus but I have no doubt at all that the answer has to do with the external botanical characteristics of the tree and zero to do with the actual wood produced by the tree because that, sadly for us woodworkers, is how botanical classification works.
NOTE: these pics were all taken in very bright incandescent lighting ("soft white" at 2700K)
colors will vary under other lighting conditions