Deiregyne confusa

Garay

Bot. Mus. Leafl. 28: 283, plate 18C. 1982.

Illustrated
Synonyms: Schiedeella confusa (Garay) Espejo & López-Ferrari Spiranthes confusa (Garay) Kartesz & Gandhi
Treatment appears in FNA Volume 26. Treatment on page 523. Mentioned on page 521.

Plants 2.5–5 dm. Roots 7–12, tuberous, fasciculate, large, 12 × 1 cm, fleshy. Stems with 6–9 bladeless cauline sheaths. Leaves absent at anthesis, 2–3, mostly basal; petiole not distinct; blade linearlanceolate, 15–30 × 2–3.5 cm. Inflorescences to 15 deflexed flowers, secund or loosely spiraled, 6–18 cm, glandular-pubescent; floral bracts ovatelanceolate, striate-veined, 1–2.5 cm, apex acuminate. Flowers pink or dull brown to purplish with green veins; sepals recurved, 3-veined, glandular-pubescent; dorsal sepal elliptic-obovate, abruptly tapering to apex, concave, slightly constricted to form sac 12–19 × 4.2–5.2 mm; lateral sepals linearlanceolate, somewhat sigmoid, 11–17 × 2–3.5 mm, apex acute, glandular-pubescent on outer surface; petals linear-oblanceolate, sigmoid, 3–5-veined; lip whitish pink with green veins, 13–20 mm, strongly pandurate, basal portion orbiculate, 7–10 mm wide, pubescent, apical portion suborbiculate, 5–6 mm wide, margins crenulate or erose; column flattened, 8 mm; rostellum cuspidate; anther abaxial; pedicellate ovary green, stout, 10 × 3 mm.


Phenology: Flowering May–Jul.
Habitat: Open grassy slopes in rim rock
Elevation: 2000 m

Discussion

Deiregyne confusa is known in the United States only from the original collections made in 1931 in the Chisos Mountains of Brewster County, Texas. Searches since then have failed to find any more plants (C. A. Luer 1975; J. Liggio and A. Liggio 1999). The Texas plants were originally identified as Spiranthes durangensis Ames & C. Schweinfurth (D. S. Correll 1950). They were subsequently placed in Deiregyne and described as D. confusa Garay. L. A. Garay (1980[1982]) stated that D. durangensis does not occur in the United States.

Selected References

None.

Lower Taxa

None.
... more about "Deiregyne confusa"
self-pollination +
ovate-cucullate +
glandular-pubescent +
Acute (?) +  and Acuminate (?) +
suborbiculate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Paul Martin Brown +
cauline +  and basal +
cuneate +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
flattened +, triangular +  and cylindric +
2cm;3.5cm +
flattened +
Tex. +  and Mexico +
constricted +
2000 m +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3-merous +, sessile +  and pedicellate +
dull brown +  and purplish +
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
Open grassy slopes in rim rock +
lateral +  and terminal +
glandular-pubescent +
6 cm60 mm <br />0.06 m <br /> (18 cm180 mm <br />0.18 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
2 (?) +  and 3 (?) +
reduced +
whitish pink +
pandurate +
larger +
1.3 cm13 mm <br />0.013 m <br /> (2 cm20 mm <br />0.02 m <br />) +
crenulate +
differing in form and color +
1-many-flowered +  and cymose +
pendent +  and erect +
free +  and distinct +
not distinct +
Flowering May–Jul. +
Bot. Mus. Leafl. +
12 cm120 mm <br />0.12 m <br /> (?) +
aerial +  and subterranean +
7 +  and 12 +
longer than wide +
1.2 cm12 mm <br />0.012 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
minute +
free +, distinct +, adnate +  and connate +
glandular-pubescent +
foliaceous +
not +  and alike +
Illustrated +
branched +, or +  and simple +
pendent +  and erect +
proliferous +
thickened +  and stout +
Schiedeella confusa +  and Spiranthes confusa +
Deiregyne confusa +
Deiregyne +
species +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +