Gleditsia triacanthos f. infermis, skyline honey locust

skyline honey locust 
Gleditsia triacanthos f. infermis

Hardiness: Zones 3 to 8
Plant type: Tree
Height: 35- 45'
Spread: 25- 35'
Sun: Full sun
Water: Medium
Bloom time: May, June
Bloom color: Greenish-yellow
Soil: Prefers moist, organically rich, well-draining soils, tolerant of a wide range of soils, neutral (≈7).

Notes: Species plants are generally not sold in commerce today because of it's thorns, and messy seed pods. However, this variety of honey locust is thornless and often does not produce seed pods. 

More information on this plant here.