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common yellow stargrass, Curtis' star-grass

Wright's star-grass

Leaves

3–12 mm wide, soft, flexible, glabrous or nearly so.

(0.5–)0.7–2.1(–2.6) mm wide, soft, usually stiff, sparsely to densely pubescent to pilose.

Scape

(4–)5–13(–27) cm.

(20–)35–85(–150) mm, topped by 1 bract or, if flowers 2 or more, bracts more than 1, not opposite.

Inflorescences

racemose, 1–3(–7)-flowered;

proximal 2 flowers, when present, not paired;

bracts (3–)5–20(–80) mm.

racemose, 1–2(–3)-flowered;

proximal 2 flowers, when present, not paired;

bracts (2–)3–8(–15) mm.

Flowers

tepals 4–8(–11) × 0.

tepals 4–8(–10) × (1.4–)2–3(–3.5) mm, shorter to longer than pedicel, less than 1.5 times as long as ovary;

anthers (0.6–)0.9–1.8(–2) mm;

ovary oblanceoloid, (2–)3–6(–8) × 1.5–2.5 mm, usually densely pilose;

pedicel (1–)3–12(–21) mm, usually longer than bracts.

Seeds

black, lustrous, 1.2–1.6 mm, coarsely muricate.

dark brown, dull, 0.9–1.1(–1.3) mm, minutely muricate.

5

–2.1 mm, 2 or less times longer than pedicel, usually 2 or less times longer than ovary;

anthers 1–1.8 mm;

ovary cylindric, (2–)3–6(–7) × 1–3 mm, glabrate or sparsely pubescent;

pedicel (2–)5–12(–20) mm, usually shorter than bracts.

Hypoxis curtissii

Hypoxis wrightii

Phenology Flowering year round. Flowering spring.
Habitat Riverbanks, floodplains Pinelands, seasonally flooded prairies
Elevation 0–100 m (0–300 ft) 0–100 m (0–300 ft)
Distribution
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; VA
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; LA; MS; NC; SC; TX; West Indies
[WildflowerSearch map]
[BONAP county map]
Discussion

When not in flower, the rosettes of Hypoxis curtissii can be easily mistaken for Cyperus, which grows in the same habitats.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

In the southern part of its range, Hypoxis wrightii can be found flowering shortly after fire at any time of year. The name H. micrantha Pollard was misapplied to H. wrightii by A. E. Brackett (1923) and subsequent authors.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 202. FNA vol. 26, p. 204.
Parent taxa Liliaceae > Hypoxis Liliaceae > Hypoxis
Sibling taxa
H. hirsuta, H. juncea, H. mexicana, H. rigida, H. sessilis, H. wrightii
H. curtissii, H. hirsuta, H. juncea, H. mexicana, H. rigida, H. sessilis
Synonyms H. erecta var. leptocarpa, H. hirsuta var. leptocarpa, H. leptocarpa H. juncea var. wrightii, H. humilis
Name authority Rose: in J. K. Small, Fl. S.E. U.S., 287, 1329. (1903) (Baker) Brackett: Rhodora 25: 140. (1923)
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