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Terrestrial. Rhizoids few, capillary, basally thickened and rigid, with numerous papillose branches c. 0.5 mm long. Stolons capillary, much branched. Foliar organs often not conspicuous at anthesis, narrowly linear, 1-2 cm long, c. 0.5 mm wide, apex acute, 1-nerved. Traps very numerous on the vegetative organs, ovoid, stalked, 0.2-0.5 mm long, mouth lateral, upper lip projecting with 2 spreading curved subulate sparsely branched appendages. Inflorescence erect, up to 25 cm long; flowers 1-25, moderately distant; peduncle capillary, glabrous above, usually minutely papillose below; scales few, similar to the bracts but narrower and acuminate at base and apex, often papillose; bracts medifixed, peltate, broadly elliptic to orbicular, membranous, 0.75-1 mm long, obtuse or subacute at base and apex; bracteoles absent; pedicels ascending, capillary, terete, 2-10 mm long. Calyx lobes subequal, broadly ovate to orbicular, c. 1 mm long at anthesis, slightly accrescent, apex rounded or truncate. Corolla yellow, 6-10 mm long, upper lip broadly ovate to orbicular, 2-3 times as long as upper calyx lobe, apex rounded, lower lip larger, ± flabellate, deeply 3-lobed, midlobe larger than side lobes, apex of lobes rounded to truncate, palate much raised, bigibbous, spur subulate from a short conical base, parallel with and about as long as lower lip, apex usually obtuse, sometimes acute or 2-4-denticulate. Filaments filiform, curved, anther thecae confluent. Ovary globose, style very short, stigma lower lip orbicular, upper lip obsolete. Capsule globose, 1-1.5 mm long, membranous, dehiscing by a small ventral ovate pore. Seeds numerous, ovate, 0.2-0.25 mm long, testa thin, obscurely longitudinally striate.
Terrestrial herb.. Rhizoids and stolons capillary, few from the base of the scape.. Leaves linear, 1–2 cm. long, ± 0.5 mm. wide, 1-nerved.. Traps very numerous, globose or ovoid, 0.2–0.5 mm. long, stalked, the stalk slightly shorter than the trap; mouth lateral, oblique; upper lip with 2 branched appendages.. Inflorescence erect, up to 25 cm. high; scape capillary, smooth above, minutely papillose below; inflorescence-axis usually flexuous or zigzag; floral internodes slightly longer than the pedicels; scales few, peltate, ± as long as the bracts, narrowly elliptic, acuminate at both extremities, minutely papillose; bracts peltate, orbicular, 0.75–1.0 mm. long, smooth, clasping the base of the pedicel; bracteoles absent; pedicels capillary, ascending, 2–10 mm. long.. Calyx-lobes subequal, broadly ovate, ± 1 mm. long at anthesis, slightly accrescent, obscurely 5-nerved, apex obtuse or truncate.. Corolla yellow, normally 6–10 mm. long, sometimes reduced (in cleistogamous flowers) to 2 mm.; upper lip broadly ovate, apex rounded, 2–3 times as long as the upper calyx-lobe; lower lip orbicular in outline, deeply 3-lobed; palate raised, bigibbous; spur subulate, parallel with and ± equalling the lower lip or (in cleistogamous flowers) much reduced and saccate.. Filaments filiform; anther-thecae confluent.. Ovary globose; style very short; stigma lower lip orbicular, upper lip ± obsolete.. Capsule globose, 1–1.5 mm. long, dehiscing by a small ovate abaxial pore.. Seeds numerous, ovoid, 0.2–0.24 mm. long, longitudinally striate.
Annual or perhaps perennial terrestrial herbs; stolons capillary, subterranean, bearing a photosynthetic organ and traps. Photosynthetic organs narrowly linear, 1-nerved, sometimes numerous and conspicuous but often ? decayed at anthesis, to 20 mm long and 0.5 mm wide. Traps obliquely ovoid, stalked, 0.2-0.5 mm long, the mouth lateral, the upper lip with 2 subulate sparsely branched ap-pendages. Inf lorescences to 25 cm long; peduncle capillary, 1-25-flowered; bracts peltate, orbicular to elliptic, the sterile scales numerous on the peduncle below the raceme; pedicels ascending, 2-10 mm long. Flowers with the calyx lobes + ovate, subequal; corolla yellow, usually 6-10 mm long but much reduced in cleistogamous flowers, the upper lip broadly ovate, entire, the lower lip deeply 3-lobed, the palate conspicuously bigibbous, the spur subulate, obtuse, descend-ing, about as long as the lower lip. Capsules globose, ca. 1.5 mm long, dehiscing by an abaxial ovate pore; seeds ovoid, ca. 0.25 mm long with ca. 15 longitudinal striations.
Underground parts very delicate, rarely collected, with bladders 0.5 mm; aerial lvs, if present, linear, to 1 cm; flowering branches very slender, erect, 3–20 cm, 1–10-fld; bracts ovate or elliptic, 1–2 mm, peltate, attached at or below their middle; pedicels 4–15 mm; cor commonly yellow, the lower lip usually 4–7 mm, with prominent palate and widely spreading limb; spur about equaling the lip and appressed to its lower surface. Wet soil and very shallow water, often among mosses; N.S. to Fla. along the coastal plain, thence w. to Ark. and Tex. May–Sept. (Setiscapella s.) A depauperate form 2–5 cm with 1–3 whitish fls 1–2 mm sometimes occurs with the normal form. (U. cleistogama; Setiscapella c.)
Inflorescence erect, up to 25 cm. high; peduncle capillary, smooth above, minutely papillose below; inflorescence-axis usually flexuous or zigzag; floral internodes slightly longer than the pedicels; scales few, peltate, more or less as long as the bracts, narrowly elliptic, acuminate at both extremities, minutely papillose; bracts peltate, circular, 0.75–1.0 mm. long, smooth, clasping the base of the pedicel; bracteoles absent; pedicels capillary, ascending, 2–10 mm. long.
Corolla yellow, normally 6–10 mm. long, sometimes reduced (in cleistogamous flowers) to 2 mm.; superior lip broadly ovate, with apex rounded, 2–3 times as long as the upper calyx lobe; inferior lip circular in outline, deeply 3-lobed; palate raised, bigibbpus; spur subulate, parallel with and more or less equalling the inferior lip or (in cleistogamous flowers) much reduced and saccate.
Annual, carnivorous herb. Leaves ± narrowly linear, 1-veined. Traps many, mouth lateral. Flowers with peduncles 20-50 mm long; yellow (or white to reddish in cleistogamous flowers). Bracts peltate. Calyx: lobes Sub-Equal. Corolla: upper lip broadly ovate; lower lip ± rhombic, deeply 3-lobed; spur ± same length as lower lip. Flowering time Dec.
Inflorescence erect 1-10 in. high, scape capillary, flexuous or zigzag, bearing small yellow flowers on pedicels about 1/4 in. long with obtuse, obscurely nerved calyx-lobes.
Traps very numerous, globose or ovoid, 0.2–0.5 mm. long, stalked, the stalk slightly shorter than the trap; mouth lateral, oblique, with two dorsal branched appendages.
Calyx lobes subequal, broadly ovate, more or less 1 mm. long at anthesis, slightly accrescent, obscurely 5-nerved, with apex obtuse or truncate.
Ovary globose; style very short; stigma inferior lip circular, superior lip more or less obsolete.
Capsule globose, 1–1.5 mm. long, dehiscing by a small ovate ventral pore.
Rhizoids and stolons capillary, few from the base of the peduncle.
Seeds numerous, ovoid, 0.2–0–24 mm. long, longitudinally striate.
Leaves linear, 1–2 cm. ×more or less 0.5 mm., 1-nerved.
Filaments filiform; anther-thecae confluent.
Terrestrial herb.
