Sabino Canyon Cholla Wash 2/14/19 Droop-pod Mustard Flower Sabino Canyon Cholla Wash 2/14/19 Droop-pod Mustard Flower Droop-pod Mustard Flower Droop-pod Mustard Stem Droop-pod Mustard Leaves Sabino Canyon Cholla Wash 2/14/19 Droop-pod Mustard Leaves


Wildflowers of Southern Arizona


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Droop-pod Mustard.
Caulanthus lasiophyllus.
Mustard (Brassicaceae) family.

Plant: annuals, (not glaucous), usually sparsely to densely hispid or hirsute, rarely subglabrate. Stems erect, unbranched or branched distally, (0.8-)2-10(-16) dm, at least sparsely hirsute basally. Leaves: basal leaves soon withered. Cauline leaves petiolate (proximal and median 0.5-3 cm); blade lanceolate to oblong or oblanceolate, pinnatifid, 2-12 cm × 5-50 mm, (smaller with fewer lobes distally), margins of lateral lobes dentate or entire. Racemes without a terminal cluster of sterile flowers, (considerably elongated in fruit). Fruiting pedicels strongly reflexed or spreading, (slender or thickened), (0.7-)1-2.2(-3) mm. Flowers: sepals erect, oblong, 2-4 × 0.7-1 mm, (not saccate or urceolate); petals usually white to creamy white, rarely pinkish, (narrowly oblanceolate), 2.5-5(-6.5) × 0.9-1.1 mm, not channeled or crisped, claw undifferentiated from blade; filaments slightly tetradynamous, median pairs 3-4.5 mm, lateral pair 1.5-2.5 mm; anthers ovate, equal, 0.4-0.7 mm. Fruits ascending or descending (straight to slightly curved, sometimes subtorulose), terete, 2-4.8(-5.7) cm × 0.7-1.2 mm; valves each with obscure midvein, (glabrous or sparsely pubescent); ovules 14-60 per ovary; style 0.5-2 mm; stigma subentire. Seeds (brown), 0.9-1.5 × 0.6-1 mm. Flowering Mar-May. Desert flats, gravelly areas, limestone rocks, talus slopes, shrub communities, hillsides, sandy banks, disturbed sites, grassy fields, ravines; 0-1400 m.

Santa Catalina Mountains
Sabino Canyon Recreation Area
Location: Esperero Trail near road to volunteer campground.
3/1/17

See SEINet Pictures and Description

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