Tephrosia angustissima
Tephrosia mysteriosa
narrowleaf hoary-pea
Lake Wales hoary-pea
ascending-erect to sprawling, 10–45 cm, glabrous.
prostrate, 20–60 cm, densely hirsute, hairs tawny.
petiole 10–20 mm;
leaflets 11 or 13, blades linear to linear-lanceolate, 20–50 × 0.5–1.5 mm, length 12–30 times width, apex acute, surfaces minutely strigulose to glabrate.
petiole 1–2(–3) mm;
leaflets (5 or)7–11(or 13), blades concolorous, elliptic to oblong- or obovate-elliptic, (8–)14–18(–25) × (6–)8–12(–16) mm, length 1.6–2.2 times width, apex truncate to slightly retuse, abaxial surface moderately to densely strigose-sericeous, hairs relatively long and overlapping, venation greenish, adaxial dull, light olive green to brownish, usually hirtellous, becoming glabrate or glabrescent.
5–11-flowered, 4–8 cm;
floral bracts persistent, linear.
axillary, 2–6-flowered, evident (flowers well above level of leaves), (5–)10–16(–20) cm;
floral bracts persistent, linear-lanceolate.
corolla white to pink, darkening to red, 7–10 mm;
stamens monadelphous;
style glabrous.
corolla white to pinkish, aging red to deep maroon, 8–12 mm;
stamens diadelphous;
style bearded.
38–50 × 3–4 mm, sparsely hirsutulous.
40–55 × 4–5 mm, minutely and closely strigulose.
Tephrosia angustissima
Tephrosia mysteriosa
Tephrosia angustissima is known from Brevard and Miami-Dade counties.
Tephrosia angustissima, T. corallicola, and T. curtissii have been regarded as distinct species (L. H. Shinners 1962e; R. W. Long and O. Lakela 1967); D. Isely (1982, 1998) considered them a single species. These three taxa are sympatric with apparently few, if any, morphological intermediates. They are part of the T. purpurea complex (see discussion under 14. T. tenella).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Tephrosia mysteriosa is known from two major ridge systems, the Lake Wales Ridge and the Mount Dora Ridge, in the northern half of peninsular Florida. The species had previously been identified as T. chrysophylla; variant populations of T. mysteriosa found in disturbed sites on the periphery of its range probably reflect hybridization with T. chrysophylla. Tephrosia × varioforma DeLaney is a hybrid of T. florida and T. mysteriosa and is apparently formed sporadically.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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