MacDougal's Groundsel Flower Sunset Trail 9/17/16 MacDougal's Groundsel Flower Sunset Trail 9/17/16 MacDougal's Groundsel Head MacDougal's Groundsel Leaves Sunset Trail 9/17/16 MacDougal's Groundsel Leaves Sunset Trail 9/17/16 MacDougal's Groundsel Stem MacDougal's Groundsel Plant Sunset Trail 9/17/16 MacDougal's Groundsel Plant


Wildflowers of Southern Arizona


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MacDougal's Groundsel.
Senecio eremophilus var macdougalii
Aster (Asteraceae) family.

Perennials, (20-)40-80(-140) cm (caudices branched, fibrous-rooted). Herbage glabrous or glabrate. Stems single or loosely clustered. Leaves ± evenly distributed (proximal often withering before flowering); petiolate or sessile; blades ovate or lanceolate to narrowly lanceolate, (3-)6-12(-20) × (1-)1.5-5(-7) cm, bases tapered, margins usually pinnate to lacerate, sometimes dentate. Heads 10-60+ in compound corymbiform arrays. Calyculi of 3-5+ (prominent or inconspicuous) bractlets (lengths to 3 / 4 phyllaries). Phyllaries (± 8) ± 13, 3-8+ mm, tips green or black. Ray florets ± 8; corolla laminae 5-10 mm. Cypselae usually glabrous, sometimes hirtellous.

Santa Catalina Mountains
Location: Marshall Gulch at edge of waterfall basin alongside access road just below gate.
9/13/15

Notes: Sunset Trail 9/17/16
Fall bloomer.

See SEINet Pictures and Description

Thumb: Threadleaf Groundsel
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Thumb: Curlycup Gumweed
C. Gumweed »