Plant Database

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Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: "0.5-3 dm tall." (bibref: 1812).
Leaf: "Leaf-spurs up to 0.5 mm long, sometimes subobsolete; stipules subulate to subulate-caudate, 0.6-2 mm long, mostly livid or brownish; intrapetlolular glands confluent into a single, subulate or triangular spicule up to 0.3 mm long; post-petiolular glands hemispherical, prominent, yellow or orange; leaves (0.7) 1-3 cm long, slender-petioled, with narrowly margined, usually sparsely glandular rachis and (1) 2-3 (4) pairs of narrowly oblong-oblanceolate, emarginate or retuse leaflets 5-12 (15) mm long, the terminal one longer than but arising at the same point as the last pair, all easily and quickly reflexed at dusk or when picked." (bibref: 1812).
Flower: "Peduncles mostly 1.5-7 (15) cm long, subobsolete in some young or depauperate individuals; spikes at anthesis moderately dense, becoming looser in fruit, at first ovate in oudine, becoming ovate-oblong to cylindric, without petals 5.5-8 (9) mm diam, the thinly pilosulous or glabrous axis becoming (5) 8-25 (30) mm long; bracts persistent, subdimorphic, the lowest broadly obovate-flabellate to rhombicovate, short-acuminate, 2-4 mm long, the interfloral ones narrower, rhombic-oblanceolate to -spatulate, pallid and membranous in the proximal 1/2-1/3, livid distally and charged dorsally with a few large, orange or pale yellow glands, all glabrous dorsally and ciliolate, or the upper ones sometimes thinly pilosulous dorsally; calyx at anthesis 2.8-4 mm long, distended and slightly accrescent in fruit, thinly pilose externally with silvery hairs or the tube glabrous and only the teeth and orifice pilose-ciliolate, the tube recessed behind the banner, at first obconic-campanulate 1.6-2.1 mm long, 1.2-1.6 mm diam, pleated at base, the ribs slender but prominent, usually livid, the intervals hyaline, charged with 1 (2) large orange glands, the livid teeth triangular-aristate, gland-spurred, 1.3-2 mm long; petals pale rose-purple, eglandular or the banner charged with a few tiny, scattered glands, the wings and keel early deciduous, perched well below separation of the filaments; banner 2.7-3.8 mm long, the claw 1.1 -1.8 mm, the flabellate blade 1.4-2.3 mm long, 1.2-1.5 mm wide; wings 2-2.5 mm long, the claw 0.8-1.1 mm, the narrowly oblanceolate, minutely auricled blade 1.3-1.6 mm long, 0.3-0.6 mm wide; keel (2) 2.4-2.9 mm long, the claws 0.8-1.5 mm, the half-obovate blades 1.3-1.9 mm long, 0.7-1 mm wide; androecium (6) 7-9-merous, 2.2-3.5 mm long, commonly with only 5 fertile members, the rest with effete or greatly reduced anthers, the longer filaments free through 0.45-0.7 mm, the connective minutely gland-tipped, the fertile anthers nearly round in outline, about 0.2 mm diameter." (bibref: 1812).
Fruit: "Pod exserted from the calyx-tube, obliquely obovoid-pyriform in profile, 2.5-3 mm long, the style-base lateral, the filiform prow strongly convexly arched, livid-nigrescent, the valves hyaline proximally, thinly papery, pilosulous but not glandular distally; seed 1.5-1.9 mm long." (bibref: 1812).

Bloom Information

Bloom Color: Pink , Purple
Bloom Time: Sep , Oct
Bloom Notes: "Petals pale rose-purple." (bibref: 1812).

Distribution

USA: AZ , NM , TX
Native Distribution: "Local but forming colonies, widespread around the upper watershed of the Gila River in central and southestern Arizona (Yavapai to southern Apache, Greenlee, and Cochise Counties) and southwestern New Mexico (Catron, Grant, and western Sierra County), eastward in New Mexico to the southern end of Sangre de Cristo Mountains (San Miguel County) and White Mountains (Lincoln County)., the Davis Mountains in Trans-Pecos Texas, and southward (as now known seemingly interruptedly) along Sierra Madre Occidental to west-central Durango." (bibref: 1812).
Native Habitat: "Open slopes and grassy or gravelly flats in pine-forest, 1950-2770 m (6500-8300 ft)." (bibref: 1812).

Bibliography

Bibref 1812 - Daleae imagines : an illustrated revision of Errazurizia Philippi, Psorothamnus Rydberg, Marina Leibmann, and Dalea Lucanus emend. Barneby, including all species of Leguminosae tribe Amorpheae Borissova ever referred to Dalea (1977) Barneby, Rupert C.

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Additional resources

USDA: Find Dalea polygonoides in USDA Plants
FNA: Find Dalea polygonoides in the Flora of North America (if available)
Google: Search Google for Dalea polygonoides