Sabulina michauxii (Fenzl) Dillenb. & Kadereit

Rock Sandwort

Sabulina michauxii plant

Family - Caryophyllaceae

Stems - No info. yet.

Sabulina michauxii stem

Leaves - Narrowly linear, stiff and leathery, often spinelike at tip. Nodes concentrated in lower half of stem.

Sabulina michauxii calyxLower leaf nodes

Inflorescence - No info. yet.

Flowers - No info. yet.

Sabulina michauxii calyxCalyx.

Sabulina michauxii flowerFlower close-up.

Flowering - May - July.

Fruits - Capsules 3-4 mm long, dehiscing by 3 teeth.

Sabulina michauxii flowerFruits

Habitat - Bluffs, ledges, rocky glades. On limestone.

Origin - Native to U.S.

Other info. - This is a characteristic limestone bluff species. It grows in some of the most inaccessible locations of any plant in the state. The plant has a long tough root that enables in to grow in cracks and holes in limestone.
Sabulina michauxii may be the most showy of the Missouri sandworts and is a plant worthy of cultivation. It may be difficult to grow, however, given its chosen habitat in the wild.
This is an easy species to ID in the field because of its linear leaves, big white flowers, and habitat. The leaf nodes tend to be crowded in the lower half of the stems, with the upper stems scapose.
This plant was formerly known as Minuartia michauxii and also Arenaria stricta.

Photographs taken near Jam Up Cave, Shannon County, MO., 6-22-03 (DETenaglia); also at St. Joe State Park, 6-2-2013 (SRTurner).