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common yellow stargrass, Curtis' star-grass

stiff star-grass

Leaves

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

(8–)10–20(–26) mm wide, soft, stiff, sparsely to densely pubescent, old leaf bases persisting as bristles.

Scape

(4–)5–13(–27) cm.

(4–)6–13(–18) cm.

Inflorescences

racemose, 1–3(–7)-flowered;

proximal 2 flowers, when present, not paired;

bracts (3–)5–20(–80) mm.

racemose, 1–2(–4)-flowered;

proximal 2 flowers, when present, not paired;

bracts (2–)3–5(–6) mm.

Flowers

tepals 4–8(–11) × 0.

tepals 5–8(–10) × 1.4–2.5 mm, longer than pedicel, longer than ovary;

anthers 1.5–3.5 mm;

ovary oblanceoloid, 3–5(–7) × 2–3 mm, densely pilose;

pedicel (2–)3–8(–15) mm, usually less than 2 times as long as bracts.

Seeds

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

black, lustrous, 1–1.3 mm, with rounded pebbling.

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 rigida

Phenology Flowering year round. Flowering spring–summer.
Habitat Riverbanks, floodplains Seasonally flooded pinelands and bogs
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; SC; TX
[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.)

Source FNA vol. 26, p. 202. FNA vol. 26, p. 203.
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. sessilis, H. wrightii
Synonyms H. erecta var. leptocarpa, H. hirsuta var. leptocarpa, H. leptocarpa
Name authority Rose: in J. K. Small, Fl. S.E. U.S., 287, 1329. (1903) Chapman: Fl. South. U.S. ed. 2 repr. 1892, 696. (1892)
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