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(A) Mean monthly maximum and minimum air temperatures at the seed burial site. (B, C) Germination percentages (mean ± s.e.) of Kalidium gracile seeds incubated (B) in distilled water at four temperature regimes in a 12 h photoperiod and (C) in 0, 0·2, 0·4 and 0·6 mol L−1 NaCl solutions at 30/15°C in a 12 h photoperiod at time 0 (fresh seeds) and following 5–24 months of burial in soil.
