Niebla dilatata

The World Botanical Associates Web Page
Prepared by Richard W. Spjut
April 2003, Oct. 2005, Sep 2012
Additions May 2017

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.

Evolutionary history of coastal species of fog lichen genera
Niebla, Ramalina and Vermilacinia

Emmanuel Sérusiaux & Richard  Spjut
Baja California, Jan-Feb 2016

Evolution and diversification of Niebla
Steve Leavitt et al., Baja California, Dec 2016

E of Bahia de Ascunción, near the coast, N 27°09.218, W 114°11.507,
12 m, Spjut & Sérusiaux 17144. Jan 2016

W of Bahía de Tortugas, towards Punta Eugenia, N 27°49.701, W 115°03.454 35-40 m, pjut & Sérusiaux 17170. Jan 2016

West of Villa Jesus Maria, along shoreline, north of Punta Morro Santo Domingo, 70 m, Leavitt et al. 16-947, Dec 2016

undulata-11336.jpg (116623 bytes)

Inland ~ 2 mi from Punta Canoas,
Spjut & Marin 11336, Apr 1990


Near Puerto Catarina,
Spjut & Marin 13046


dilatata_11512.jpg (146074 bytes)contorta-11512.jpg (95992 bytes)


Punta Cono, Spjut &
Marin 11512
, Apr 1990


Isla Guadalupe, Weber &
McCoy 82 isotype

Near Puerto Catarina,
Spjut & Marin 13053


Near Puerto Catarina,
Spjut & Marin 13050


     Niebla dilatata is an endemic lichen to Baja California, occurring on Isla Guadalupe and along the Pacific Coast from the Vizcaíno Peninsula to near Puerto Catarina. It appears most common on rocks along the northern shore of the Vizcaíno Peninsula, west of Guerrero Negro.  It is identified by the flattened thallus branches with broad undulating lobes, usually thicker at margins, in contrast to the deltoid more sharply pointed thinner segments of N. caespitosa

     Niebla dilatata was reported as endemic to Isla Guadalupe (Spjut 1996); however, specimens from peninsular BCN, previously included under N. caespitosa (Plate 3D and Plate 3E in Spjut 1996), have since been interpreted as belonging to N. dilatata (Spjut, this [WBA] website, 2005).  Niebla dilatata was distinguished by its cortex of intermediate thickness, 75–120 µm thick, compared to < 75 µm thick in N. caespitosa and related species in Baja California, and >125 µm thick in other species on Isla Guadalupe and in California (Spjut 1996).