An effective high-speed counter-current chromatography method was established for the preparative isolation and purification of two phenylpropanoid glycosides from the Tibetan medicinal plant Pedicularis longiflora Rudolph. var. tubiformis (Klotz). Tsoong. With a two-phase solvent system composed of chloroform-n-butanol-methanol-water (4:3:4:5, v/v), 40 mg of an extract of Pedicularis longiflor...

A small or sparse population may suffer a reduction in fitness owing to Allee effects. Here, we explored effects of plant density on pollination, reproduction and predation in the alpine herb Pedicularis rex over two years. We did not detect a significant difference in the pollination rate or fecundity (fruit set and the initial seed set) before predation between sparse and dense patches in eit...

We analyzed phenolic compounds in the leaves of Pedicularis chamissonis which were obtained from a wide range of Japan. Acteoside and luteolin 7-O-glucuronide were found as major compounds in the all plants from various populations. Luteolin 7-O-glucoside was additionally found in the plants sampled from in the southern part of their habitats. Fujii et al. (2013) divided the plants into two spe...