Plant Database

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Plant Characteristics

Duration: Perennial
Habit: Herb , Subshrub
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: "1.5-5 (6) dm tall." (bibref: 1812).
Leaf: "Leaf-spurs 0.4-0.8 mm long, charged dorsally on each side with a large gland; stipules narrowly subulate or subsetiform, castaneous or livid, 1-2.8 mm long, becoming dry and fragile; intrapetlolular glands obsolete; post-petiolular glands prominent, obtuse; main cauline leaves shortly petioled, (2) 2.5-5 cm long, with narrowly margined, commonly punctate rachis and 10-17 pairs of linear, linear-oblanceolate, or -elliptic, obtuse or retuse, thick-textured, usually conduplicate or channeled leaflets 2-9 (10) mm long, the leaves of basal spurs smaller, with mostly 4-10 pairs of leaflets only 1.5-3 mm long ." (bibref: 1812).
Flower: "Peduncles terminal to all branches, (1.5) 2.5-10 cm long; spikes very dense, conelike, ovoid becoming subglobose, ovoid, or the first, central one becoming oblong-cylindroid, without petals 6-8.5 mm diam, the axis becoming 0.4-1.4 (3) cm long; bracts persistent, dimorphic, (1.5) 2-4 mm long, the lowest obovate-flabellate to rhombic-ovate, glabrous or puberulent, but ciliolate below the middle, purplish-castaneous and glandular dorsally, the interfloral ones rhombic-spatulate, densely pilosulous dorsally in lower half or sometimes throughout, the tips often glabrous dorsally but ciliolate; calyx 2.7-4 (4.3) mm long, subglabrous externally or puberulent distally, the oblong-ovoid, slightly incurved tube 2.1-2.8 (3) mm long, deeply and widely recessed behind the banner, the ribs filiform, castaneous distally, the membranous intervals eglandular (or minutely glandular as seen from within), the subulate teeth crowded toward the abaxial side of the orifice, more or less incurved, unequal, the dorsal one longest, up to 0.4-1.3 (1.5) mm long; petals either all white or bicolored, the banner then white and the epistemonous ones blue, these perched 0.9-2.4 mm distant from the hypanthium, well below separation of the filaments; banner 3-5.2 (5.9) mm long, the claw 1-2.6 (3.2) mm, the ovate-elliptic or rhombic-suborbicular blade 2-2.4 mm long, about as wide; wing- and keel-petals similar, 2.6-5.5 mm long, the inner pair slightly smaller but inserted a little higher and therefore appearing as long, the narrowly oblong-oblanceolate blades 2.3-4 mm long, 1.1-1.3 mm wide, contracted at base into a claw 0.4-1.8 mm long; androecium l0-merous, 5-7.7 mm long, the filaments free for 2.6-3.7 mm, the connective gland-tipped, the anthers 0.6-0.65 mm long." (bibref: 1812).
Fruit: "Pod obliquely ovoid, the style-base lateral but scarcely below the apex, the sutures filiform, the valves membranous nearly throughout, thinly chartaceous and puberulent along the prow, eglandular; seed about 1.7 mm long." (bibref: 1812).

Bloom Information

Bloom Color: White , Blue
Bloom Time: Aug , Sep , Oct
Bloom Notes: "Petals either all white or bicolored, the banner then white and the epistemonous ones blue." (bibref: 1812).

Distribution

USA: AZ
Native Distribution: "Local and discontinuous along the Pacific slope of northern Sierra Madre Occidental, best known from the great bend of Rio Bavispe in municipios Nacozari de Garcia, Bacerac, and Bavispe, Sonora and immediately adjoining municipio Janos, Chihuahua, south just within Chihuahua on Sierra de Vallecillos, drainage of Rio Papigochic (municipio Madera), and about the upper affluents of Rio Mayo (municipios Moris and Ocampo), northward at isolated stations in southeastern Arizona, on Pajarito and Tumacacori Mountains (Santa Cruz County), Baboquivari Mountains (Pima County) and reportedly Santa Catalina Mountains." (bibref: 1812).
Native Habitat: "Open rocky hillsides in the oak-madrone and oak-pine belts, 1400-1900 m (4700-6700, perhaps "7000" 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 lumholtzii in USDA Plants
FNA: Find Dalea lumholtzii in the Flora of North America (if available)
Google: Search Google for Dalea lumholtzii