Fig. 4From: Reproductive biology of an endangered lithophytic shrub and implications for its conservationLength and width of the floral tube of Lonicera oblata and its relationship to that of the three pollinators. A Floral tube length and tongue length of the main floral visitors. B Floral tube width and body width of the main floral visitors. Different italic lowercase letters above each box indicate significant differences at PÂ <Â 0.0005Back to article page