Resurrection Plant

Selaginella lepidophylla is native to the Chihuahuan Desert and other arid regions of the southwestern United States (Texas, New Mexico) and northern/central Mexico.

• Its natural range spans elevations from approximately 100 to 1,500 meters above sea level
• The Chihuahuan Desert is the largest desert in North America, covering roughly 362,000 km²
• Selaginella species as a whole have a pantropical and warm-temperate global distribution, with centers of diversity in tropical Asia and the Americas
• Lycophytes as a lineage trace their origins to the Silurian period (~430 million years ago), long before the evolution of flowering plants
• During the Carboniferous period (~359–299 million years ago), giant lycophyte relatives such as Lepidodendron grew up to 40 meters tall and formed the vast swamp forests that became today's coal deposits

Selaginella lepidophylla is a small, low-growing, rosette-forming perennial spikemoss, typically reaching 5–15 cm in diameter when fully hydrated.

Stems & Branches:
• Stems are creeping to ascending, repeatedly dichotomously branched, forming dense cushion-like rosttes
• Branches are tightly appressed when dry, curling inward to form a compact brown ball ("rose of Jericho")
• Upon rehydration, branches unfurl and spread outward within 2–4 hours, revealing bright green foliage

Leaves (Microphylls):
• Leaves are small (~1–3 mm), scale-like, and arranged in four rows along the stems
• Each leaf is a microphyll — a defining feature of lycophytes, possessing a single unbranched vascular strand (unlike the complex venation of fern and flowering plant leaves)
• Leaf margins are often ciliate (bearing fine hairs)
• When desiccated, leaves become leathery and brown; upon rehydration they rapidly regain their green color and turgidity

Roots:
• True roots arise from specialized structures called rhizophores — stem-borne organs unique to Selaginella that develop into roots upon contact with soil

Reproductive Structures:
• Produces strobili (cone-like structures) at branch tips containing two types of spores (heterospory) — microspores and megaspores
• Heterospory is a key evolutionary innovation shared with seed plants and is relatively rare among spore-bearing plants
• Spores are minute and wind-dispersed

Selaginella lepidophylla thrives in extreme desert environments characterized by intense solar radiation, scarce and unpredictable rainfall, and dramatic temperature fluctuations.

Habitat:
• Grows on dry, rocky, sandy, or gravelly soils in full sun to partial shade
• Often found in shallow depressions, rock crevices, and desert flats where minimal moisture accumulates
• Frequently associated with other xerophytic (drought-adapted) desert flora

Desiccation Tolerance Mechanism:
• Can survive losing up to 95% of its cellular water content, entering a state of anhydrobiosis (life without water)
• Produces large quantities of trehalose (a disaccharide sugar) and LEA (Late Embryogenesis Abundant) proteins that protect cellular structures during drying
• Trehalose forms a glass-like matrix that stabilizes cell membranes and proteins, preventing irreversible damage
• Upon rehydration, metabolic processes — including photosynthesis — resume within hours
• This cycle of desiccation and rehydration can be repeated many times over the plant's lifespan

Water Relations:
• In its dry "ball" state, the plant can be tumbled by wind across desert surfaces, dispersing spores as it goes
• When it encounters moisture, it uncurls, anchors temporarily, and resumes growth and reproduction
• This tumbleweed-like dispersal strategy is unique among lycophytes

The Resurrection Plant is widely sold as a novelty "living curiosity" — a dry, brown ball that "comes back to life" when placed in water. It requires minimal care and is an excellent educational plant.

Light:
• Bright indirect light to full sun; tolerates the intense light of its native desert habitat
• Indoors, a sunny windowsill is ideal

Watering:
• To "resurrect": place the dry ball in a shallow dish of room-temperature water
• It will begin to unfurl within 1–4 hours and fully open within 24 hours
• Keep the base in contact with water or mist regularly to maintain the green, hydrated state
• Can be allowed to dry out and rehydrated repeatedly — this mimics its natural cycle
• Use non-chlorinated or filtered water when possible

Soil:
• Not strictly necessary — the plant can survive in a dish of water alone for extended periods
• If potted, use a well-draining sandy or gravelly mix (e.g., cactus/succulent mix)
• Shallow containers work best

Temperature:
• Tolerant of a wide range: 10–35°C
• Can withstand brief exposure to temperatures near freezing in its desiccated state
• Avoid prolonged exposure to temperatures below 5°C when hydrated

Humidity:
• Unlike most ferns and lycophytes, S. lepidophylla is adapted to extremely low humidity
• No humidifier needed — it thrives in dry indoor air

Propagation:
• Spore propagation is possible but slow and challenging for home growers
• Division of established clumps is the most practical method
• Commercially, most specimens are wild-harvested or nursery-propagated from spore cultures

Common Problems:
• Failure to unfurl → water too cold, or plant has been desiccated beyond recovery (rare)
• Mold or rot → stagnant water left too long; change water regularly
• Browning after prolonged hydration → normal aging of older fronds; the plant may be entering a new dormancy cycle