Galium serpenticum subsp. puberulum (Piper) Dempster & Ehrend., 1965 6% complete

No common name

Dempster LT, Ehrendorfer F (1965) Evolution of the Galium Multiflorum Complex in Western North America. II. Critical Taxonomic Revision. Brittonia 17(4): 289-334. doi: 10.2307/2805025.