Niebla ramosissima

The World Botanical Associates Web Page
Prepared by Richard W. Spjut
November 2005, Sep 2012

Niebla and Vermilacinia (Ramalinaceae) from California and Baja California.  
Spjut, R.W., 1996. ISSN 0833-1475, 208 pp.  
Sida, Botanical Miscellany 14. Botanical Research Institute of Texas, Inc.

 

San Nicolas Island, CA
Bratt 8124,
holotype (SBBG)

 

     Niebla ramosissima is a lichen that is endemic to San Nicolas Island, known only from a single (holotype) collection. It is distinct for its flaccid thallus divided into numerous filamentous branches bearing occasional apothecia and pycnidia below branch apices. It is one of several terricolous Niebla species that contain divaricatic acid. Another, N. versiforma, also known only by the holotype—from a mesa above San Antonio del Mar in Baja California Norte—has wider more rigid branches with abundant apothecia and pycnidia.  They appear related to N. palmeri that occurs on Isla de los Coronados and in the coastal chaparral region of the northern Baja California peninsula; it is distinguished by having sekikaic acid and pycnidia mostly at branch tips.  It is also related to N. juncosa (divaricatic acid) that is more common south of Bahía de San Quintín, distinguished by having a fragile thallus with erect branches and branchlets that easily break off.