So what's the name of this Lindera? Glauca/Angustifolia/Salicifolia?

Confusion seems to reign in the naming of an increasingly popular, and to my eye, very beautiful, resilient, and easy shrub. Many of us have seen different variations of the name and wondered what is correct. Are there different species, or are the names simply confused?Taxonomist Julian Shaw of the Royal Horticultural Society has at last provided the correct nomenclature. Here's how I found out. My friend Giacomo Guzzon, a landscape architect in London, is visiting this week. We've been looking at several of my own Lindera shrubs, at many others used on the Princeton University campus by Michael Van Valkenburgh, and at even others at Chanticleer Garden.Giacomo sent a message off to the affable and extremely knowledgeable Jared Barnes, PhD, assistant professor of horticulture at Stephen F. Austin State University in Nacogdoches, Texas. We remembered Jared had just posted on Lindera naming.Jared sent Giacomo a link to the Friends of the JC Raulston Arboretum (JCRA) Newsletter, Spring 2015 – Vol. 18, No. 1. You can find the details at this link.It appears that the names Lindera sacilifolia and glauca are not valid names. In fact, there are two varieties of Lindera angustifolia. The Lindera growing in mainland China, which has soft hairs, is Lindera angustifolia var. angustifolia, and the Lindera growing in western Korea is Lindera angustifolia var. glabra, with smooth leaves.At last I know what I have in my garden (I hope). Lindera angustifolia var. glabra.All photos by Giacomo Guzzon (except the one he's in!).