. The Canadian field-naturalist. Figure \. A comparison of the lemma surfaces of Z. aquatica (a,b) and Z. palustris (c,d); fertilized spikelets (a and c), sterile spikelets (b and d). the epiblast curves away from the grain allows water easy access to soak into the inner portions of the caryopsis. Figure 3b shows the epiblast that in Figure 3a was lying on the elongating coleoptile. Only after the coleoptile is well established (Figure 3c) does the primary root begin to emerge by penetrating the lemma towards the base of the grain where it was attached to the parent plant. Figure 3c shows the
. The Canadian field-naturalist. Figure \. A comparison of the lemma surfaces of Z. aquatica (a,b) and Z. palustris (c,d); fertilized spikelets (a and c), sterile spikelets (b and d). the epiblast curves away from the grain allows water easy access to soak into the inner portions of the caryopsis. Figure 3b shows the epiblast that in Figure 3a was lying on the elongating coleoptile. Only after the coleoptile is well established (Figure 3c) does the primary root begin to emerge by penetrating the lemma towards the base of the grain where it was attached to the parent plant. Figure 3c shows the emerging root, the epiblast, and the elongating first internode with a bulge that is the first stem node, towards the top of the picture. Above the first node is the sheath of the first Figure 2. A comparison of the exposed palea surfaces of (left) Z. aquatica with minute trichomes and (right) Z. palustris with a glabrous Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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