Gentianopsis detonsa
Gentianopsis detonsa subsp. detonsa
serrate gentian, sheared gentian, western fringe gentian, windmill fringe gentian
salt-ensian, windmill fringe gentian
branching diverse, often from base as well as distally.
simple or those of larger plants with branches or peduncles arising from base.
basal usually persistent and green at flowering, blades narrowly obovate to spatulate, oblanceolate, oblong, or linear (subsp. raupii) 0.5–3.5(–6) cm × 3–18 mm, apex rounded or obtuse, sometimes subacute or acute (subsp. detonsa), at least distal cauline blades oblanceolate, narrowly elliptic, lanceolate, or linear, (0.5–)1.5–6.5 cm × 1–7(–15) mm, apex rounded to obtuse, or usually acute (subsp. detonsa).
blades: basal oblanceolate, apex obtuse to acute;
cauline leaves linear, apex usually acute, occasionally absent.
(0.3–)1–15 cm.
often 1 per primary stem, occasionally 2–5;
calyx 7–30 mm, keel smooth, all or at least inner lobes less than 1.5 times as long as tube, lobes ovate to narrowly lanceolate, varying with subspecies;
corolla pale to deep blue or occasionally pale yellow or white, 12–50 mm, lobes oblong, oblong-lanceolate, oblong-triangular, oblong-orbiculate, or proximally oblong, distally obovate to suborbiculate, varying with subspecies, 5–20 × 4–12(–15) mm, margins proximally fringed or merely erose to dentate, distally dentate;
ovary ± short-stipitate.
outer calyx lobes distinctly longer than inner, apex acuminate, inner ovate to lanceolate, apex acute to short-acuminate;
corolla 12–36 mm, lobes oblong-triangular, 0.5+ times as long as tube, margins dentate, not fringed, narrowed apically, apex ± acute;
gynophore short, thick.
papillate, not winged.
coat papillate only toward ends.
= 78 (Iceland).
Gentianopsis detonsa
Gentianopsis detonsa subsp. detonsa
Subspecies 4 (4 in the flora).
References to Gentianopsis detonsa in the Rocky Mountains from Montana south to New Mexico have been based on circumscriptions of the species that included G. thermalis. Specimens formerly so identified from Illinois, Indiana, and Ontario south of the James Bay region are G. virgata subsp. virgata. Those from Minnesota are G. virgata subsp. macounii.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
The corolla lobes of subsp. detonsa and subsp. yukonensis are proportionately narrower than those of the other Gentianopsis taxa in the flora area and taper to a more nearly acute apex than those of any other taxa except G. macrantha.
Plants from arctic Canada and Greenland do not appear to be separable from those from Iceland, the provenance of the type, nor from plants from Norway. If representatives of Gentianopsis detonsa in any other part of continental Europe are considered taxonomically separable, subsp. detonsa in the flora area is appropriately retained in the autonymic subspecies.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Margins of corolla lobes dentate or erose, not fringed; halophytes of northern seacoasts (including Mackenzie Delta). | → 2 |
2. Basal leaf blades oblanceolate, apex obtuse to acute; cauline leaf blades (if present) linear, apex usually acute; corolla lobes 0.5+ times as long as tube; seed coat papillate only toward ends. | subsp. detonsa |
2. Leaf blades obovate to spatulate or oblanceolate or distal cauline leaf blades (if present) elliptic to lanceolate, apex rounded or obtuse; corolla lobes to 0.5 times as long as tube; seed coat completely papillate. | subsp. nesophila |
1. Margins of most corolla lobes fringed proximally, dentate toward apex; plants of the interior, approaching Arctic coast only in Mackenzie Delta (subsp. raupii). | → 3 |
3. Distinct rosette of basal leaves present at flowering, separated from cauline leaf blades; corolla lobes acute apically. | subsp. yukonensis |
3. Basal leaves generally persistent but rosette not well developed, transitional to cauline leaves; corolla lobes rounded apically. | subsp. raupii |
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