Oracle Ridge Trail 7/14/16
Wildflowers of Southern Arizona
Amaranth (Amaranthaceae) family.
Stems erect to spreading, simple proximally, branched distally, 1-8 dm, farinose. Leaves non-aromatic; petiole 0.4-2.5 cm; blade usually broadly triangular, sometimes ovate to elliptic, 0.7-6 cm thick, base truncate or cuneate, margins entire or with a pair of basal teeth or lobes, apex rounded to obtuse, farinose abaxially. Inflorescences glomerules in terminal and axillary interrupted spikes, 16-22 × 4-5 cm; glomerules 2-5 mm diam., maturing mixed; bracts small, margins entire. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, 0.7-1 × 0.5-0.9 mm, apex obtuse, carinate, farinose to subglabrous, completely covering fruit at maturity; stamens 5; stigmas 2, 0.2-0.5 mm. Utricles ovoid; pericarp nonadherent, warty-smooth. Seeds round , 1-1.3 mm diam.; seed coat dark reddish brown to black (sometimes with light streaks), ± smooth. 2n = 18. Fruiting late summer-fall.
Santa Catalina Mountains.
Location: Oracle Ridge Trail.
Notes: Oracle Ridge Trail 7/14/16.
See SEINet Pictures and Description