Thomas McAfee's "Like Tributaries . . ." begins with a simile that sounds almost like a definition: love is what small streams are to rivers. Then, before we can settle into the comparison, the poem abandons it and drops us into a place. By the second line the abstraction has been replaced by shade, ferns, and a creek, and what the poem actually gives us is a landscape in which to feel love rather than an explanation of it.
That landscape is lovely but not safe. The shade is "sweet," the clover flowers are "frail," the carpet underfoot "softens." Yet the sweetness keeps curdling. The creek "seizes up a moment," a verb that suggests cramp or seizure more than gentle pausing. Then comes the poem's sharpest turn: "Here fierce as Lethe reigns the monster, / Here the monster rages." Lethe, the river of forgetfulness in classical mythology, is an odd companion for a fern-shaded creek, and it widens the poem's frame. Love here is something that can overwhelm memory and reason, a force that rules the place. The poem never says what the monster is, which is part of its power. We are left to decide whether it is desire, jealousy, loss, or the sheer unmanageability of feeling.
The repetition in "Here fierce... / Here the monster rages" is one of the few places where the poem raises its voice, and it matters that it does so twice. The syntax is also slightly inverted ("reigns the monster"), giving the line a formal, almost incantatory ring against the otherwise quiet scene. The poem is written in free verse, with no regular rhyme or meter, and its irregular line lengths mimic the way a creek wanders and pools. Sentences spill over line endings ("this / Is love"), so that the reader is carried forward the way water is. The one place where the movement stalls is the stuttering "A day, a moment," where the poem seems to catch itself, as though the creek's brief seizing had happened to the verse as well.
The phrase "Rotten, sweet" is the poem's quiet center. Putting the two words side by side suggests that decay and pleasure are not opposites here but ingredients of the same thing. The "tree limbs crumbling / Underwards" belong to the same pattern: the world described is soft because it is breaking down, the way a forest floor is soft because of everything that has fallen onto it. The oddly coined "Underwards" deserves notice, since it pulls the whole scene downward, toward the damp earth, toward what lies beneath. Love, in this vision, is a place where things are always sinking and softening, and that is exactly why the footing feels so pleasant.
The ending returns to the ferns, and it is the most understated moment in the poem. "By water's edge the ferns will droop / In heat or cold; they will not be transplanted." After the rage of the monster, the poem settles on a fact about plants, but the fact carries emotional weight. Judging by the imagery, the ferns stand for a kind of rootedness: they droop, they suffer weather, and they stay. They cannot be moved to a better location, and the poem does not suggest they would want to be. If the monster represents love's violence, the ferns represent its loyalty, a stubborn attachment to one place that persists through discomfort. The refusal of transplanting also hints that this kind of love cannot be relocated, managed, or tidied into a more convenient setting.
What makes the poem worth reading is the way it holds contradictions without resolving them. Love is a tributary, small and gentle, and also a monster; its setting is sweet and rotten; its moment is a day and also an instant; its main image is movement, yet it ends on something that will not move. The poem trusts physical detail to carry emotional truth, and it leaves the biggest questions open. For a reader, that openness is the invitation: the creek is right there, the ferns are drooping, and we are left to work out for ourselves what we have been standing in.