Wildflowers of Southern Arizona
Madder (Rubiaceae) family.
Plant: perennial creeping or climbing herb; stems to 90 cm long. STEMS and leaf margins with few to many aculeate hairs. Leaves: 5-12 (commonly 6) at each node. Flowers: perfect, with generally (not always) campanulate corollas. Fruit: with well developed or obscure uncinate hairs.
Santa Catalina Mountains.
Location: Along shoulder of Marshall Gulch Trail access road.
See SEINet Pictures and Description