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Anisacanthus quadrifidus var. wrightii (Flame acanthus) | NPIN
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Anisacanthus quadrifidus var. wrightii (Flame acanthus)
Marcus, Joseph A.

Anisacanthus quadrifidus var. wrightii

Anisacanthus quadrifidus (Vahl) Nees var. wrightii (Torr.) Henrickson

Flame acanthus, Hummingbird bush, Wright's desert honeysuckle, Wright acanthus, Mexican flame, Wright's Mexican flame

Acanthaceae (Acanthus Family)

Synonym(s): Anisacanthus wrightii, Drejera wrightii

USDA Symbol: ANQUW

USDA Native Status: L48 (N)

Native from west and south-central Texas into adjacent northern Mexico, Anisacanthus quadrifidus var. wrightii is a spreading, 3 to 5 ft. deciduous shrub with exfoliating bark; red-orange, tubular flowers; and light-green, lanceolate leaves.

Its brilliant summer-to-fall blooms, cheerful green foliage, pale bark, and ability to attract hummingbirds have made it increasingly popular in landscapes. Though found in the wild mostly in rocky, calcareous soils, it is adaptable both to the heavy soils of Houston and to the drying, confined conditions of pots. It is drought-tolerant and can survive low temperatures as far north as Dallas, though only the roots will survive the winters there and the whole plant will reemerge each year like a perennial from the ground. Though the attractive branches are somewhat brittle, it takes well to shearing and can make a dense, low hedge. As with other xeric plants within its range, rain will trigger a flush of blooms, covering the plant in fiery orange. In favorable conditions, it will seed out readily.

The species name of this plant is for Charles Wright, 1811-1885, world-wide botanical collector who collected extensively in Texas (1837-1852), Cuba, and his native Connecticut.

The Acanthus family includes trees, shrubs and herbs. Stems are square; leaves are generally without teeth or lobes, and are opposite. The flowers are 2-lipped and almost radially symmetrical. There are 2–4 stamens; when 4, they are in unequal pairs.

 

Plant Characteristics

Duration: Perennial
Habit: Shrub
Root Type: Fibrous
Leaf Retention: Deciduous
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Lanceolate
Leaf Venation: Pinnate
Leaf Pubescence: Glabrous
Leaf Margin: Entire
Leaf Apex: Acute
Leaf Base: Rounded
Leaf Texture: Smooth
Breeding System: Flowers Bisexual
Size Notes: Normally no more than 3 ft tall but can reach 5 ft.
Leaf: Dull light green
Flower: Flowers 3-4 cm long
Fruit: Brown capsules, black seeds 15 mm
Size Class: 3-6 ft.

Bloom Information

Bloom Color: Red , Orange
Bloom Time: Jun , Jul , Aug , Sep , Oct

Distribution

USA: TX
Native Distribution: The northernmost variety of its species, Anisacanthus quadrifidus var. wrightii ranges from south-central Texas (the southern Edwards Plateau) and west Texas into northern Mexico. Its species, Anisacanthus quadrifidus, continues south to Oaxaca in southern Mexico.
Native Habitat: Rocky banks and floodplains of streams, shrublands (matorral), and grasslands

Growing Conditions

Water Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Drought Tolerance: High
Cold Tolerant: yes
Heat Tolerant: yes
Soil Description: Well-drained sand, loam, clay, caliche, limestone. Adapts to a wide variety of soils, from rocky slopes to open areas.
Conditions Comments: This drought- and cold-tolerant shrub will adapt to a variety of soils and does well in patio pots. It blooms best in full sun but will tolerate light shade. As with many other xeric plants, rain triggers blooms.

Benefit

Use Ornamental: A showy shrub with ornamental blooms for perennial gardens and other planned landscapes
Use Wildlife: Flowers attract hummingbirds and butterflies.
Conspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies , Hummingbirds
Larval Host: Janais Patch, Texan Crescentspot
Nectar Source: yes
Deer Resistant: High

Butterflies and Moths of North America (BAMONA)

Anisacanthus quadrifidus var. wrightii is a larval host and/or nectar source for:
Texan Crescent
(Anthanassa texana)

Larval Host
Learn more at BAMONA

Propagation

Propagation Material: Seeds , Softwood Cuttings
Description: The easiest method of propagation is to take cuttings from the current season’s growth. Cut a 4 – 6 inch branch just below a node. Remove lower leaves and root in flats or small pots. Rooting hormone increases rooting percentage but is not necessary. Seeds can be planted in flats, or outside after the danger of frost has past. Sowing indoors allows for a sturdier plant to withstand mid-summer’s heat. Plant seeds 1/3 – 1/2 inch deep in a well-drained soil mix. Keep soil moist but not saturated.
Seed Collection: As soon as capsules begin to dry and turn brown but before they split open. Air dry and store in a cool, dry place for one season, or store in the refrigerator for longer periods of time.
Seed Treatment: Best sown fresh
Commercially Avail: yes
Maintenance: Pruning in winter encourages more blooms and a compact shape. Where it dies to the ground in the winter (meaning leaves wont resprout from the branches but the whole plant regrows from the ground each year, in the manner of a perennial), cut back to the ground before spring.

Mr. Smarty Plants says

Small shrub to plant in Austin Texas
March 11, 2009
Hi.. I live in Southwest Austin and I am looking for a shrub that I can plant against the back of my house, which faces the north. I want something native, fairly low maintenance and not too large,...
view the full question and answer

List of native perennial Texas flowers
March 13, 2006
Good day, I am searching for a list of native Texas flowers (preferably perennials) for a flower garden. Thank you.
view the full question and answer

From the National Suppliers Directory

According to the inventory provided by Associate Suppliers, this plant is available at the following locations:

Wrights Nursery - Briggs, TX
Far South Wholesale Nursery - Austin, TX

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Fredericksburg Nature Center - Fredericksburg, TX
Lady Bird Johnson Wildflower Center - Austin, TX
Sibley Nature Center - Midland, TX
Brackenridge Field Laboratory - Austin, TX
Native Plant Society of Texas - Fredericksburg, TX
NPSOT - Fredericksburg Chapter - Fredericksburg, TX
NPSOT - Austin Chapter - Austin, TX
National Butterfly Center - Mission, TX
NPSOT - Williamson County Chapter - Georgetown, TX

Additional resources

USDA: Find Anisacanthus quadrifidus var. wrightii in USDA Plants
FNA: Find Anisacanthus quadrifidus var. wrightii in the Flora of North America (if available)
Google: Search Google for Anisacanthus quadrifidus var. wrightii

Metadata

Record Modified: 2010-09-25
Research By: TWC Staff, MWJ, JSC, GDG

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