 Cold Springs Cyn, Orange County, CA. 5-27-10. © Ron Vanderhoff. |
Field Horsetail Equisetum arvense Native throughout the arctic and temperate regions of the northern hemisphere Back to Equisitaceae of Orange County, California |
 San Juan Creek, old bridge to 2.2 mi E. Orange County, CA. 9-18-11. © Ron Vanderhoff |
 Cold Springs Cyn, Orange County, CA. 5-27-10. © Ron Vanderhoff. |
 Female frond. San Juan Cr. and base Lion Cyn., 6-6-13. © Ron Vanderhoff. |
 Male frond. San Juan Cr. and base Lion Cyn., 6-6-13. © Ron Vanderhoff. |
 San Juan Creek, nr. Hot Springs, 7-4-16. © Ron Vanderhoff. |
 Fertile frond, Side Cyn, 2.5 rd. mi. E Hot Spr. Cyn. Rd., 1-20-13. © Ron Vanderhoff. |
 Fertile frond, Side Cyn, 2.5 rd. mi. E Hot Spr. Cyn. Rd., 1-20-13. © Ron Vanderhoff. |
 Fertile frond, Side Cyn, 2.5 rd. mi. E Hot Spr. Cyn. Rd., 1-20-13. © Ron Vanderhoff. |