Fig. 4 in Identification of anthocyanin and other flavonoids from the green-blue petals of Puya alpestris (Bromeliaceae) and a clarification of their coloration mechanism

Fig. 4. UV–vis absorption spectra of the tip and base of the petals of Puya alpestris.Published as part of Mizuno, Takayuki, Sugahara, Kohtaro, Tsutsumi, Chie, Iino, Moritoshi, Koi, Satoshi, Noda, Naonobu & Iwashina, Tsukasa, 2021, Identification of anthocyanin and other flavonoids from the green-blue petals of Puya alpestris (Bromeliaceae) and a clarification of their coloration mechanism, pp. 1-10 in Phytochemistry (112581) 181 on page 6, DOI: 10.1016/j.phytochem.2020.112581, http://zenodo.org/record/829077