Vascular Plants of North Carolina
Account for Small-seeded Yellow-eyed-grass - Xyris species 1  
Members of Xyris with account distribution info or public map:
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Section 5 » Family Xyridaceae
Author
DistributionThis entity was under consideration as a species distinct from X. jupicai, but apparently has been dropped (see Weakley 2020 under jupicai).
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Identification
Taxonomic CommentsMembers of Xyris are easy to identify to genus, but can be a challenge to identify species. Careful observation of a few features with a hand-lens is usually sufficient. Close attention must be paid to the flowering head, which is composed of overlapping brown scales. Immediately behind each scale are two brown "lateral sepals"; the margins of these may be feathery or irregularly lacerate (cut into narrow segments) or finely cut into short, comb-like prickles. Lateral sepals may be hidden or a bit longer than each scale. The flowers themselves are usually of little diagnostic value, other than time of flowering -- morning vs. afternoon. Seed size and ornamentation can also be useful characters, but require a dissecting scope to see well. Note also whether leaves and scapes (stems) are twisted and the color of the basal portion. All species have 2-ranked leaves, but in some species the leaves are arranged in a broad, fan-like shape. Finally, note the leaf and stem surface texture -- whether smooth of with little pale bumps. See Godfrey & Wooten (1979) for detailed descriptions and drawings.
Other Common Name(s)
State RankSYN
Global RankGNR
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US Status
USACE-agcp
USACE-emp
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