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Anulocaulis leiosolenus - Southwestern ringstem

Scientific Family
Nyctaginaceae
Synonyms
Boerhavia leiosolena
Plant type
Forbs and Subshrubs
Origin
Native
Lifecycle
Perennial
Height
1 foot or more
Riparian
No

An ungainly, spindly plant with large fleshy leaves near the base, stems sparsely leafy; white, pink or bright pinkish-purple, trumpet-shaped flowers scattered about widely branched stems.

Flowers white, pink or bright pinkish-purple with lightly coiled, protruding, pink stamens, round, lobed, pinkish anthers. Flowers a long tube of petals and sepals. Seeds enclosed in persistent, fleshy, leathery, or woody sepals (anthocarp); leaves basal.

Habitat

Found in limestone soils or rocky soil containing gypsum at about 3500 feet.

Plant Community
Desert Scrub
Grasslands
Interior Chaparral
Low elevation
3000
High elevation
4000

Flower Characteristics

Flowers single or in ill-defined clusters of 2 to 5 on branches; flower is a long, greenish-bronze tube; white, pink or bright pinkish-purple petal-like lobes abruptly flare from tubes; 3 lightly coiled, projecting stamens; round, lobed, pinkish anthers.

Flower color
White, pink or bright pinkish-purple
Flower shape
Irregular
Tubular
Yes
First bloom month
June
Last bloom month
November
Flower clusters
Elongated

Leaf and Stem Characteristics

Stout stems usually with a broad, sticky band on each internode; the basal leaves opposite, with 1 to 3 pairs near the plant base, thick and fleshy, heart-shaped; upper surfaces dull green to pale green, lower surfaces grayish-green; both surfaces smooth.

Leaf type
Simple
Leaf color
Dull green
Leaf shape
Round or oval
Leaf margin
Toothed
Leaf attachment
Basal & Opposite
Leaves clasp
No
Leaf hairs
None
Spines
No

Fruit and Seed Characteristics

Wedge-shaped and widened in the middle; 1/4 to 1/2 inch long and 1/16 to 1/4 inch wide; 10-ribbed, ribs narrow and wavy with well-developed, strongly wavy raised rims; fruits secrete mucilage when wetted.

Fruit type
Achene

Single seeds enclosed in persistent (remain attached), fleshy, leathery, or woody sepals.