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Paria Plateau Indian breadroot, Paria River Indian breadroot

rock Indian breadroot

Habit Herbs acaulescent or subacaulescent, 2–9 cm, mostly glandular and strigose throughout. Herbs caulescent, to 150 cm, mostly glandular throughout and pubescent.
Stems

short-erect, rarely branched (when branched then branches subtended by cataphylls), leaves clustered;

pseudoscapes to 2.5 cm;

cataphylls 6–11 mm, glabrous.

1, erect, much branched distally, leaves dispersed along stem, more so apically;

pseudoscapes 0;

cataphylls 5–15 mm.

Leaves

palmately 3(–5)-foliolate;

stipules persistent, obovate to oval, 4–10 × 2.5–6 mm, glabrous or sparsely pubescent;

petiole not enlarged but jointed basally, slightly canaliculate, 13–70 mm;

petiolules 0.5–1 mm;

leaflet blades obovate, 0.9–2.5 × 0.7–2.2 cm, base cuneate or attenuate, apex rounded or emarginate, surfaces abaxially gray-green and evenly strigose, adaxially yellow-green and strongly white-strigose along veins.

palmately 3–5-foliolate;

stipules tardily deciduous, linear to linear-lanceolate, 7–12 × 1–4 mm, sparsely strigose;

petiole sometimes swollen but not jointed basally, 2–40 mm;

petiolules 1.5–2 mm;

leaflet blades narrowly elliptic, 1.3–4.5 × 0.3–1.4 cm, base obtuse to slightly cuneate, apex apiculate, surfaces abaxially tomentose, adaxially glabrous.

Inflorescences

disjointing in age at peduncle base, globose;

rachis 0.5–8.5 cm, elongating through fruiting, nodes (1 or)2–6, 3 flowers per node, internodes 1–3 mm;

bracts tardily deciduous or persistent, oblanceolate to elliptic, 4–8 × 3–4 mm, apex abruptly acuminate, short-pubescent.

persistent, globose-ovoid, compact;

rachis 0.5–0.7 cm, crowded, nodes 2, (1–)3 flowers per node;

bracts persistent, orbiculate, 7–14(–20) × 6–13 mm, apex cuspidate to caudate, short-pubescent.

Peduncles

2–4.5 cm, shorter than subtending petiole, pubescent.

1.4–2 cm, usually longer than subtending petiole, appressed-pubescent.

Pedicels

2–5 mm.

3.5–5 mm.

Flowers

8–12.5 mm;

calyx broadly gibbous-campanulate in fruit, 10–11.5 mm abaxially, 8–8.5 mm adaxially, eglandular or sparsely glandular, pubescent;

tube 3.3–4.5 mm;

lobes lanceolate or oblanceolate, abaxial 4–6.5 × 2–3.5 mm, adaxial 3–5 × 1–1.5 mm;

corolla ochroleucous, wings and keel suffused purple or purple, banner broadly orbiculate to obovate, (8.5–)10–14 × 5.5–7.5 mm with claw 2.5–3 mm, wings 9–11 × 2.5–3 mm with claw 3.5–4 mm, keel 8–8.5 × 2.5–3 mm with claw 3–4 mm;

filaments 7–8 mm;

anthers broadly elliptic, 0.4 mm;

ovary pubescent apically, style pubescent basally.

14–20 mm;

calyx strongly gibbous-campanulate in fruit, 11–19 mm abaxially, 10–12 mm adaxially, glandular, pubescent;

tube 4–5 mm;

lobes linear-lanceolate, abaxial 10.5–12 × 2–3.5 mm, adaxial 2.5–3 × 0.8–1 mm;

corolla lavender, banner oblanceolate, 13–16 × 6–7 mm with claw 4–5 mm, wings 12–14 × 2.5–3 mm with claw 4–5 mm, keel 8–10 × 2.5–3 mm with claw 3.5–6 mm;

filaments 8–10 mm;

anthers elliptic, 0.3–0.4 mm;

ovary glabrous, pubescent on distal 1/6, style pubescent basally.

Legumes

ellipsoid, 6–7 × 4–4.5 mm, eglandular, strigose, beak 3–4 mm, not exserted beyond calyx.

ellipsoid, 7–8 × 4.5–5 mm, densely glandular, sparsely pubescent apically, beak 3–4 mm, subequal to calyx.

Seed

gray-green to brown, obovoid, 4.5–5 × 2.5–3 mm, shiny.

red-brown, oblong-reniform, 4 × 6 mm.

Pediomelum pariense

Pediomelum reverchonii

Phenology Flowering spring–summer. Flowering summer.
Habitat Barren outcrops in open pine-juniper woodlands. Open rocky fields, prairies.
Elevation 1700–2500 m. (5600–8200 ft.) 200–500 m. (700–1600 ft.)
Distribution
from FNA
UT
[BONAP county map]
from FNA
OK; TX
[BONAP county map]
Discussion

Pediomelum pariense is known from Garfield, Kane, and Washington counties. It much prefers open, barren rocky soils, particularly limestone and is considered rare, with fewer than 20 populations known. A few known populations inhabiting the high-elevation escarpment ridges of Bryce Canyon National Park are assured protection, but the bulk of populations exist on the lower steps of the Grand Staircase-Escalante area, areas that may become targets for mining and oil developments. In 2005 and 2006, considerable effort was spent to seek out new populations but without success.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Pediomelum reverchonii is recognized by its large, persistent bracts and slender, branching habit. It is restricted to south-central Oklahoma and north-central Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Pediomelum Fabaceae > subfam. Faboideae > Pediomelum
Sibling taxa
P. argophyllum, P. aromaticum, P. californicum, P. canescens, P. castoreum, P. cuspidatum, P. cyphocalyx, P. digitatum, P. epipsilum, P. esculentum, P. humile, P. hypogaeum, P. latestipulatum, P. linearifolium, P. megalanthum, P. mephiticum, P. palmeri, P. pentaphyllum, P. piedmontanum, P. reverchonii, P. rhombifolium, P. subacaule, P. tenuiflorum, P. verdiense
P. argophyllum, P. aromaticum, P. californicum, P. canescens, P. castoreum, P. cuspidatum, P. cyphocalyx, P. digitatum, P. epipsilum, P. esculentum, P. humile, P. hypogaeum, P. latestipulatum, P. linearifolium, P. megalanthum, P. mephiticum, P. palmeri, P. pariense, P. pentaphyllum, P. piedmontanum, P. rhombifolium, P. subacaule, P. tenuiflorum, P. verdiense
Synonyms Psoralea pariensis Psoralea reverchonii
Name authority (S. L. Welsh & N. D. Atwood) J. W. Grimes: Brittonia 38: 185. (1986) (S. Watson) Rydberg in N. L. Britton et al.: N. Amer. Fl. 24: 19. (1919) — (as reverchoni)
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