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Dalea albiflora (Whiteflower prairie clover)
Anderson, Wynn

Dalea albiflora

Dalea albiflora A. Gray

Whiteflower Prairie Clover, Scruffy Prairie Clover

Fabaceae (Pea family)

Synonym(s): Dalea ordiae, Petalostemon pilosulus

USDA Symbol: DAAL

USDA Native Status: L48 (N)

"Perennial from an eventually woody root and short caudex, (2) 2.5-5 (7) dm tall, silky-villosulous with weakly ascending (the stems sometimes with horizontal or subretrorse) hairs up to 0.3-1 mm long, the erect or less often diffuse stems usually branched near the base and also distally, sparsely glandular-verruculose, the foliage greenish or cinereous, the leaflets punctate beneath." (bibref: 1812)

"Perennial herb with erect to ascending stems, to 60 cm tall, pilose to densely villous, stems often reddish in color." (webref: 23). "Distinguished by being a densely, silvery-hairy erect perennial with few-many stems from a single base to 60 cm tall; leaves with many silvery-pubescent leaflets; the terminal, dense spike of small, but showy white flowers." (webref: 23). "Diffuse or assurgent herb about 3-6 dm tall, finely pilosulous throughout, bearing in the fall months and somethnes again in spring many dense, cylindric, tassel-hke spikes of small, pure white flowers. The plants vary in length and density of pubescence, and independently in diameter of the spikes, those shown here being of about medium length and thickness. The species is common in grassland and in open oak-pine woodland between 1050 and 2250 m in the Sierra Madre of Chihiuahua and adjoining Durango, and in the floristically related mountain ranges about the headwaters of the Gila a River in southwestern New Mexico, southeastern Arizona, and neighboring Sonora. Note the free inner petals that resemble those of the white prairieclover, D. candida." (bibref: 1812)

 

From the Image Gallery

19 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb , Subshrub
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: To about 2 feet in height.
Leaf: "Leaves: Pinnately compound leaflets 19-31, oblong to oblong-elliptic or narrowly obovate, 5-7 mm long, villous on both surfaces, soft wavy hairs and gland-dotted below." (webref: 23). "Leaf-spurs 0.4-0.9 mm long, charged on each side with a gland; stipules linear-subulate to subaristiform, 1-4.5 mm long, usually livid and glabrescent; intrapetiolular glands minute or obsolete; postpetiolular glands prominent, conic, orange or purplish; leaves 1-4 cm long, sessile or shortly petioled, with margined, greenish or sparsely punctate rachis and (6) 8-17 (20) pairs of oblanceolate, oblong- or linear-elliptic, more rarely oblong to narrowly obovate, mostly emarginate or very obtuse, flat or folded leaflets (1.5) 2-7 (10) mm long." (bibref: 1812).
Flower: "Flowers: Dense, erect, cylindrical spikes 2-4 cm long with peduncles usually longer than the spikes, with attenuate floral bracts, surpassing the calyx; calyx lobes deltoid-subulate, shorter than or about equal to tube; corolla white, 5 petals, spreading about 3 mm long with exserted stamens." (webref: 23). "Peduncles terminal to all branches, 0.5-8.5 cm long; spikes dense but not conelike, ovoid or narrowly conic in outline becoming oblong- or narrowly cylindroid, without petals or androecia 7-10 mm diam, the villosulous axis becoming (1) 1.5-6 (7) cm long; bracts persistent, narrowly triangular to triangular-acuminate, pubescent dorsally (the lowest sometimes glabrate), the tips usually livid-castaneous and more or less glandular; calyx (2.8) 3.2-5.1 mm long, pilosulous externally, the tube (1.9) 2-3 (3.3) mm long, deeply cleft behind the banner, the slender ribs becoming prominent, yellowish or brownish, the intervals membranous and charged with one row of 3-6 yellow glands, the triangular-cuspidate teeth entire, (0.9) 1.1-1.8 (2.1) mm long; petals white, eglandular, the epistemonous ones perched close to or shortly below separation of the filaments; banner (4.4) 5-6.4 mm long, the claw (1.8) 2-3.3 mm, the oblong-ovate or -elliptic, basally cuneate or subcordate blade (2.6) 3-4 mm long, (2) 2.2-3.4 mm wide; wing- and keel-petals similar, (3.4) 3.8-5.8 mm long, the claws (0.6) 1-1.9 mm, the oblanceolate to oblong blades usually cuneate at base, (2.7) 3.1-4.4 mm long, (0.8) 1.3-1.9 (2.2) mm wide, those of the inner pair sometimes more broadly obovate-oblanceolate and minutely auriculate at base on the inner side; androecium 10-merous (but one anther sometimes barren), (5) 6-8 mm long, the filaments free for about 3.5-4.5 mm, the connective gland-tipped, the yellow anthers 0.4-0.6 mm long; pod broadly obliquely obovoid, 2.2-2.8 mm long, 1.7-2.1 mm wide, the style-base terminal but excentric, the valves in distal third thinly papery, villosulous, and gland-sprinkled, glabrous and hyaline proximally." (bibref: 1812).
Fruit: "Fruits: Pods minutely pubescent, glandular above." (webref: 23). "Seed 1.6- 2 mm long." (bibref: 1812).

Bloom Information

Bloom Color: White
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Bloom Notes: "Petals white." (bibref: 1812).

Distribution

USA: AZ , NM
Native Distribution: "Arizona, southwestern New Mexico; south to northern Mexico." (webref: 23). "Common and locally abundant from extreme northern Durango (municipio Villa Ocampo ) through western Chihuahua and adjoining Sinaloa (Sierra Surutato) and Sonora to the headwaters of the Gila River in central and southeastern Arizona (northward to Yavapai, Gila, and Graham counties) and southwestern New Mexico (to Grant and adjoining Sierra counties)." (bibref: 1812).
Native Habitat: "Found on open slopes often in canyons from 3,500-7,000 ft (1067-2134 m)." (webref: 23). "Dry stony hillsides and grassy flats in the oak and pine belts of the Sierra Madre, northward coming out onto valley grasslands, 1050-2250 m (3500-7300 ft)." (bibref: 1812).

Web Reference

Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

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

Metadata

Record Modified: 2021-02-25
Research By: Joseph A. Marcus

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