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CommentsThis is the only sandbur grass (Cenchrus sp.) in Illinois, therefore its identification within the state is easy. Other species of sandbur occur elsewhere in the United States, especially in sandy areas of the southeast and southwest. Other common names for Cenchrus longispinus are Matted Sandbur and Long-spined Sandbur. The foliage of Sandbur and its habit of growth are quite similar to those of crabgrasses (Digitaria spp.), and they even grow together in weedy lawns and other habitats. However, crabgrasses are easily distinguished by their inflorescences, consisting of narrow digitate spikes.