Schoenolirion wrightii |
Schoenolirion |
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Texas sunnybell |
rush-lily, sunnybell |
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Habit | Plants with prominent bulbs at tops of vertical rootstocks; bulbs ovoid to elongate, to 17 mm diam. | Herbs, perennial, scapose, glabrous, from rootstocks; rootstock vertical, 1–12 cm, fleshy, sometimes bulbose; principal roots contractile, arising from tops of rootstocks. | ||||||||
Bulbs | , when present, ovoid or elongate, scales lunate. |
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Leaves | 2–7, 14–34 cm × 2–6 mm, not withering to persistent fibers; blade flattened or somewhat keeled, usually shorter than scape and inflorescence, base fleshy. |
2–7, basal; blade flat to nearly terete, sometimes keeled. |
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Inflorescences | seldom branched; bracts mostly lanceolate-acuminate, sometimes ovate-obtuse. |
racemose or 1–3(–6)-branched, bracteate, flowers initially crowded, internodes elongating after anthesis. |
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Flowers | tepals seldom strongly recurved, white, each with green abaxial stripe, mostly 3(–5)-veined, ovate to ovate-lanceolate, 4.4–6.5 mm, apex obtuse; ovary and style green. |
soon deciduous if unfertilized; tepals persistent, withering separately to base, distinct, yellow or white, each 3–7-veined, equal, 2–6 mm; stamens 6; filaments equal, shorter than tepals, 1–2 mm, inner 3 nectariferous at base; anthers introrse; ovary superior, globose, 3-lobed, 3-locular, placentation axile, ovules 2 per locule; style 1; stigma unlobed or slightly 3-lobed; pedicel 6–15(–30 mm). |
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Fruits | capsular, dehiscent, flattened or indented at top, prominently 3-lobed. |
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Seeds | glossy black, globose, flattened on 1 side, smooth. |
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x | = 12. |
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2n | = 24. |
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Schoenolirion wrightii |
Schoenolirion |
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Phenology | Flowering late Mar–mid Apr in Texas, Arkansas; mid Apr–early May in Alabama; dormant by mid Jun. | |||||||||
Habitat | Sandstone outcrops, moist pinelands, or boggy areas | |||||||||
Elevation | 0–400 m (0–1300 ft) | |||||||||
Distribution |
AL; AR; LA; TX
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se United States; including e Tex |
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Discussion | Schoenolirion wrightii occurs in habitats similar to those of S. croceum in the Alabama plateau region and in the western part of its range. Treatment of these white-flowered plants as a species distinct from Schoenolirion croceum is very tenuous; tepal color seems to be the only consistent difference between the two. At the time of the last systematic study of the genus (H. L. Sherman 1969), there seemed to be a significant difference in chromosome number between the two “color forms” (2n = 24 for S. wrightii and 2n = 30 or 32 for S. croceum). Since that time, one population of S. croceum with 2n = 24 has been found. In future treatments of the genus, S. wrightii may be considered to be a color form or variety of S. croceum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 3 (3 in the flora). Excluded species: Schoenolirion texanum (scheele).a. gray and oxytria texana (scheele).pollard are names based upon ornithogalum texanum scheele, which is the same as camassia scilloides (rafinesque).cory, and does not belong to schoenolirion (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 313. | FNA vol. 26, p. 312. | ||||||||
Parent taxa | Liliaceae > Schoenolirion | Liliaceae | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Amblystima, Oxytria | |||||||||
Name authority | Sherman: SouthW. Naturalist 24: 125. (1979) | Torrey ex Durand: J. Acad. Nat. Sci. Philadelphia, ser. 2, 3: 103. (1855) | ||||||||
Web links |