Cologania pallida
pale cologania
stipules striate, lanceolate, oblong, or linear-lanceolate, 1.7–6 × (0.3–)0.8–1.8(–3) mm, strigose, glabrescent;
petiole canaliculate, corrugate, 0.8–6.5 cm, strigose to slightly strigose;
rachis sulcate, corrugate, (5–)10–20 mm, strigose;
stipels not caducous, linear, 0.8–2.5 mm, glabrescent;
leaflets 3, pallid green, blades usually elliptic, oblong-elliptic, ovate, or ovate-elliptic, rarely oblong or oblong-obovate, 0.6–5.8 × (0.2–)0.3–3.2 cm (lateral leaflets conspicuously shorter than terminal), base usually obtuse, cuneate, or rounded, rarely subcordate, apex usually acute or obtuse, rarely acuminate, venation conspicuous to prominent abaxially, slightly conspicuous adaxially, surfaces usually strigose, sometimes, glabrous adaxially.
with 1 or 2 chasmogamous flowers, sometimes mixed with 1 or 2 cleistogamous flowers, 2–3.8 cm.
0 mm;
bracts linear-lanceolate or lanceolate, 3.3–5.1 × 0.3–0.8 mm, strigose to glabrescent.
flexible, 4–18 mm, strigulose or pilosulous;
bracts linear, 1.5–2.2 mm, strigose;
bracteoles linear, 1 mm, strigulose.
calyx pallid green, not purple, 8.5–13 × 2.8–4.1 mm, usually hirsute, strigulose, or strigose, rarely hirsutulous, lobes 1.5–3.4(–5) × 1–2.2 mm, adaxial lobe deltate, 2.1–3 × 2.1–3.7 mm, not divided;
corolla purple or purplish blue;
banner obovate, (16–)21–24.5 × 7.4–14 mm, apex obcordate;
wings obovate-oblong, 12–21.5 × 2.6–4.8(–5) mm, claw 7–10 mm;
keel obovate, 9–15.5 × 2–3.6 mm, claw 7–10 mm;
staminal tube 14–15.5 × 1.6–2.9 mm, free filaments (0.5–)0.8–2.8 mm, vexillary filament 9–13.5 mm;
anthers elliptic-oblong, 0.3–0.6 × 0.2–0.4 mm;
ovary linear-oblong, 11.5–14.5 × 0.5–0.6 mm, sericeous;
style 2.2–2.8 mm;
stigma 0.1–0.3 mm diam.
(chasmogamous) slightly to strongly curved, 4.6–6.8 × 0.3–0.4 cm, valves usually strigose, rarely pilose-hirsute;
stipe 1.6–3.2 mm, glabrous.;
legumes (cleistogamous) strongly curved, 1.9–5.2 × 0.3–0.4 cm, valves usually strigose (hairs white), rarely glabrescent;
stipe 0.5 mm.
(chasmogamous) 5–11, brown, oblong, 3.3–3.5 mm.;
seeds (cleistogamous) 2–6, mature seeds not seen.
= 44.
Cologania pallida
Cologania pallida is still poorly known and is distinguished by its fascicles of one or two chasmogamous flowers rarely mixed with one or two cleistogamous, and by its pallid green leaves, with usually elliptic to ovate-elliptic, strigose or glabrous leaflets. The legumes are often strongly curved.
Cologania pallida is uncommon in Arizona. Extant populations are known only from the Huachuca Mountains in southern Cochise County, though it is also known historically from the White Mountains in Apache County.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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