braun’s giant horsetail

Equisetum telmateia ssp. braunii

Member of great horsetail (Equisetum telmateia)
horsetail family (family Equisetaceae)
horsetails (order Equisetales)
horsetails (subclass Equisetidae)
ferns (class Polypodiopsida)

---

• main stem between nodes is green
• common

Toxicity of foxtail, horse willow, horsetail, mexican horsetail, rush (Equisetum spp.):
4 – Ingestion of these plants, especially in large amounts, is expected to cause serious effects to the heart, liver, kidneys or brain. If ingested in any amount, call the poison center immediately.

---

Chris’s observations: 20 (11 are research grade)

Locations:

• Big Basin SP: 3
• Pescadero Creek CP: 3
• El Corte de Madera OSP: 2
• Murray Ranch SP: 2
• Alum Rock Park, San Jose
• Castle Rock SP
• Garrapata SP
• Golden Gate National Recreation Area
• Nisene Marks SP
• Portola Redwoods SP
• Purisima Creek Redwoods OSP
• Russian Ridge OSP
• San Bruno Mountain State & County Park
• Skyline Ridge OSP

Months:

• Apr.: 2
• May: 5
• Jun.: 0
• Jul.: 6
• Aug.: 6
• Sep.: 1

For more details, use advanced search.

---

Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora