Agalinis navasotensis

Dubrule & Canne-Hilliker

Sida 15: 426, figs. 1–7. 1993.

Common names: Navasota false foxglove
IllustratedEndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 548. Mentioned on page 538, 540, 547.

Stems branched, 25–80 cm; branches spreading-ascending, nearly terete proximally, obtusely quadrangular-ridged distally, glabrous or scabridulous distally. Leaves proximal to mid reflexed or recurved, distal spreading; blade filiform, (11–) 17–30 (–40) x 0.5–1.2 mm, not fleshy, margins entire, siliceous, abaxial midvein scabridulous, adaxial surface scabridulous; axillary fascicles absent. Inflorescences racemiform-paniculate, flowers 1 or 2 per node; bracts both longer and shorter than, or shorter than, pedicels. Pedicels ascending-spreading, (2–) 6–25 mm, scabridulous proximally or glabrous. Flowers: calyx funnelform-obconic, tube 2.2–4.6 mm, glabrous, lobes triangular-subulate to subulate, 0.5–1.5 mm; corolla pink to rose, with 2 yellow lines and red spots in abaxial throat, 15–24 mm, throat pilose externally and glabrous within across bases of adaxial lobes, sparsely villous at sinus, lobes spreading, 5–7 mm, equal, glabrous externally; proximal anthers parallel to filaments, distal perpendicular to filaments, pollen-sacs 2–3.2 mm; style exserted, 11–15 mm. Capsules ovoid to obovoid-oblong, (4–) 6–7 mm. Seeds dark-brown, 0.8–2.3 mm. 2n = 26.


Phenology: Flowering Sep–Oct.
Habitat: Rocky prairie remnants on sandstone outcrops, sandy clay soils of longleaf pine savannas.
Elevation: 90–100 m.

Discussion

Agalinis navasotensis is known from Grimes and Tyler counties in eastern Texas; it should be looked for elsewhere in eastern Texas and northwestern Louisiana. Agalinis navasotensis differs from A. caddoensis by subtleties of its calyx shape, leaf length, corolla length, inflorescence form, and offset pollen sacs. Additional collections may show that A. navasotensis and the morphologically similar, but poorly known, A. caddoensis of western Louisiana are conspecific.

Agalinis navasotensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

... more about "Agalinis navasotensis"
rounded +  and gibbous +
Judith M. Canne-Hilliker† +  and John F. Hays +
Dubrule & Canne-Hilliker +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (3 cm30 mm <br />0.03 m <br />) +
filiform +
not fleshy +
0.5mm;1.2mm +
spreading-ascending +
scabridulous +
quadrangular-ridged +  and terete +
funnelform-obconic +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
ovoid;obovoid-oblong +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Navasota false foxglove +
bilabiate +  and symmetric +
red spots +, pink +  and rose +
1.5 cm15 mm <br />0.015 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
90–100 m. +
glabrate +  and lanate +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Rocky prairie remnants on sandstone outcrops, sandy clay soils of longleaf pine savannas. +
racemiform-paniculate +
axillary +  and terminal +
alternate +, subopposite +  and opposite +
deciduous +
proximal to mid +
triangular-subulate +  and subulate +
2-pinnatifid +, pinnatifid +  and cleft +
tenuinucellate +  and unitegmic +
campylotropous-like +
spikelike +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
ascending-spreading +
scabridulous +
0.6 cm6 mm <br />0.006 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering Sep–Oct. +
0.2 cm2 mm <br />0.002 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
spikelike +
60 +  and 600 +
Illustrated +, Endemic +  and Conservation concern +
subequal +
aerial +  and subterranean +
leaning +  and erect +
papillate +  and scabridulous +
25 cm250 mm <br />0.25 m <br /> (80 cm800 mm <br />0.8 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Tomanthera +
Agalinis navasotensis +
Agalinis +
species +
villous +, glabrous +  and pilose +
campanulate +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
perennial +  and annual +