Plant Database

From the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Subshrub , Shrub
Leaf Arrangement: Alternate
Fruit Type: Legume
Size Notes: "Up to 3.5 dm tall and 1 m or more diameter." (bibref: 1812).
Leaf: "Leaf-stalks, and lower face of leaflets charged with many prominent, orange or livid, grain- or prickle-shaped glands; stipules dimorphic, those subtending developed leaves 0.5-2.5 mm long, narrowly triangular to subulate, purplish-brown and distally glabrate, deciduous, charged at base and apex with 1 or more grainlike glands, those of inhibited axillary short-shoots closely imbricated to form globose buds; post- petiolular glands often present, nipple- or thorn-shaped, not regularly situated behind each petiolule; leaves 3-14 cm long, subsessile, with stiffly marcescent, narrowly green- margined, dorsoventrally flattened rachis and 14-30 pairs of suborbicular to oblong- obovate, obtuse or shallowly emarginate, dorsally keeled but flat, minutely gland- apiculate leaflets 1-8 mm long, these conspicuously but very gradually diminishing upward along the rachis, the terminal one smallest, elevated beyond the last pair, the larger ones pinnately nerved." (bibref: 1812).
Flower: "peduncles terminal to branchlets of current year, 0-1 cm long; spikes shortly but rather loosely 6-15-flowered, the axis 4-15 mm long; bracts deciduous, narrowly lance-acuminate or subulate, 1.6-2.5 mm long, distally glabrate and glandular; calyx 5-6.5 mm long, at first narrowly later broadly vase-shaped, thinly pilosulous externally, densely pilosulous internally around the subsymmetrical orifice, the hypanthium 1.4-2 mm deep, the tube 3.5-4.2 mm long, prominently 10-ribbed and charged between the ribs with 1 often irregular row of 2-5 prominent glands, the oblong-obovate, obtuse or gland-apiculate teeth of nearly equal length (or the dorsal one slightly longer), 1.5-2.3 mm long, at anthesis erect, in fruit recurved; banner (often absent) oblanceolate, subacute to emarginate, shallowly boat-shaped but neither involute nor revolute at apex, pale yellow fading reddish, 5-5.4 mm long, 1.5-2.1 mm wide, thinly pubescent dorsally above middle; androecium (7) 8.5-12 mm long, the filaments united into a tubular sheath 3.5-4 mm long, free for (3.5) 5-8 mm, distally greenish-yellow, the connective glandless, the bright yellow anthers 1-1.3 mm long; ovules 2, not exactly collateral." (bibref: 1812).
Fruit: "Pod ellipsoid or obovoid-ellipsoid, a trifle compressed, 9-11 mm long, cuneate at base, more abruptly contracted at apex into the persistent style-base, thick-carinate below the style, the valves densely strigulose and charged with many small grainlike, red or livid glands, becoming papery, rugulose; seed ellipsoid, subcompressed, (4.6) 5-7 mm long, (2.7) 3-3.7 mm wide in profile, 2-2.5 mm thick, the testa castaneous, lustrous. Fruiting in June." (bibref: 1812).

Bloom Information

Bloom Color: Red , Yellow
Bloom Time: Apr , May
Bloom Notes: "Banner (often absent) oblanceolate, subacute to emarginate, shallowly boat-shaped but neither involute nor revolute at apex, pale yellow fading reddish." (bibref: 1812).

Distribution

USA: AZ
Native Distribution: "Very local, known only from two small areas on creeks flowing to the Little Colorado River in Coconino and Navajo counties, Arizona." (bibref: 1812).
Native Habitat: "Rimrock and ledges of cliffs, on red or white sandstone, sometimes engulfed in drift-sand, 1350-1500 m (4500-5000 feet)." (bibref: 1812).

Web Reference

Webref 28 - NatureServe Explorer: An online encyclopedia of life (2018) NatureServe
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

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