pyrolifolia were located by consultations to or monograph loans from A, ARIZ, B, BAB, BBS, BH, BHCB,
BISH, BKL, BM, BR, C, CAS-DS, CAY, CEPEC, CTES, DAV, DNA, E, F, FCQ, G, GUA, HAL, HB, HUEFS, INPA, JE, K, KW, LE, LIL, LK, LPB, M, MA, MBM, MEXU, MICH, MO, MPU, MSC, NY, PH, PR, PTBG, RB, S, SI, SING, SP, SPF, TEX, TI, U, UCR, UFMT, UPBC, UPS, and W.