Plant Database

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Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: "Up to (5) 6-10 (12) dm, exceptionally only 1.5 dm tall." (bibref: 1812).
Leaf: "Stipular spurs up to 1 mm long, the blades triangular-subulate, subglandular, up to 1.5 mm long; intrapetlolular glands 2, spiculiform, deciduous; post-petiolular glands small but prominent; leaves somewhat dimorphic, the main cauline ones (drought-deciduous) 3-10 cm long, shortly petioled, with narrowly margined rachis and 9-18 pairs of oblong-elliptic to oblanceolate, obtuse and gland-mucronulate or emarginate leaflets 2-9 mm long, the uppermost leaves and leaflets smaller." (bibref: 1812).
Flower: "Peduncles rather stout, (1) 2.5-14 cm long; spikes moderately dense, oblong-ovoid becoming oblong-cylindroid, without petals or androecia (12) 13-16 mm diam, the villosulous or distally glabrous axis becoming (1.5) 2-8 cm long; bracts (3) 4-8 mm long, subdimorphic, the lowest commonly persistent, ovate- to broadly lance-caudate, the rest narrower but otherwise similar, early deciduous, all membranous-margined proximally, dorsally glandular, livid, and glabrous or nearly so, eciliate; pedicels 0-0.2 mm long; calyx at anthesis 4.8-7 mm long, narrowly turbinate, but somewhat accrescent and finally subtumid and oblong-ovoid, the tube (2.5) 2.7-3.8 mm long, glabrous or nearly so externally, deeply recessed behind the banner, the subfiliform ribs either livid or stramineous, the broad, glosslly membranous intervals charged with 1-2 rows of about 4 linear-elliptic, golden or orange blister-glands, the teeth triangular-aristate, (2) 2.3-3.8 mm long, usually about as long or slightly longer than the tube, rarely up to 0.6 (1) mm shorter, all plumose-cilate with fine spiral rufescent hairs; petals all blue, or bicolored, the banner then opening white but early violascent, all or only the banner gland-tipped, the inner pairs inserted near or below middle of androecium, the keel-blades usually adherent by their narrowly overlapping exterior margins; banner 4.9-7.3 mm long, the claw 1.3-2.5 mm, the broadly lance-oblong to oblong-eUiptic, obtuse or emarginate, almost erect blade 3-4.8 mm long, 2.2-3.3 mm wide; wings (2.8) 3.6-5 mm long, the claw 0.4-0.8 mm, the lanceolate or oblong, shortly auriculate blade (2) 3.4-5 mm long, 1-1.8 mm wide; keel 3.9-5 mm long, the claws 0.6-1.3 mm, the lunately elliptic or obhquely obovate blades 3-3.7 mm long, 1.1-1.6 mm wide; androecium 8-10-merous, (7.5) 8-11 mm long, the longer filaments purplish distally free for 0.9-1.6 mm, the connective gland-tipped, the pallid anthers 0.4-0.45 mm long." (bibref: 1812).
Fruit: "Pod broadly obovoid-suborbicular, compressed, 2.2-2.8 mm long, slenderly keeled along the ventral and distal margins, the style-base lateral or latero-terminal, the papery-membranous valves charged with minute scattered glands, thinly pilosulous distally, finally dehiscent along the ventral suture; seed 1.6-1.8 (2) mm long." (bibref: 1812).

Bloom Information

Bloom Color: White , Blue , Violet
Bloom Time: Jan , Feb , Mar , Aug , Sep , Oct , Nov , Dec
Bloom Notes: "Petals all blue, or bicolored, the banner then opening white but early violascent." (bibref: 1812).

Distribution

USA: AZ
Native Distribution: "Widely dispersed and locally common but the known stations highly discontinuous: western slope of northern Sierra Madre Occidental in Chihuahua, adjoining Sonora, and just entering extreme southern Arizona (Santa Cruz County); Balsas Depression and Sierra Madre del Sur from western Jalisco and Colima to Guerrero and Morelos; Atlantic slope of Mexican Plateau in Veracruz; central Oaxaca (Mixteca Alta); highlands of Chiapas through Guatemala (Alta Verapaz, Chimaltenango, and Guatemala) to Honduras (Morazan); Costa Rica (near Ochomogo and San Jose)." (bibref: 1812).
Native Habitat: "Grassy openings in oak-woods, on pedregal in thorn forest, and in disturbed soils along highways and in fallow fields, mostly 1000-1800 m, perhaps rarely up to 2100 m , descending exceptionally to near 500 m." (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 exserta in USDA Plants
FNA: Find Dalea exserta in the Flora of North America (if available)
Google: Search Google for Dalea exserta