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Manual of the Trees of North America (Exclusive of Mexico) 2nd ed.
img img Manual of the Trees of North America (Exclusive of Mexico) 2nd ed. img Chapter 102 VERBENACE .
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Chapter 102 VERBENACE .

Trees or shrubs, with opposite simple entire persistent leaves, without stipules. Flowers perfect; calyx 5-toothed or parted, persistent under the fruit; corolla 4 or 5-lobed, the lobes imbricated in the bud; stamens 4, inserted on the tube of the corolla in pairs of different lengths, anthers 2-celled, introrse, the cells opening longitudinally; o

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