Niebla marinii

©The World Botanical Associates Web Page
Prepared by Richard W. Spjut
April 2003.  Comments added Oct 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.

 

                                             

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Morro Santo Domingo,
Spjut 9774, May 1986

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Ridge S of El Marrón,
Spjut 9998A, May 1986

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Punta Cono, Spjut &
Marin 11507
, Apr 1990

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Niebla angulata, Spjut ined. Mesa Camacho, N of Punta Canoas, Spjut 11227, Apr 1990

 

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Niebla angulata, Spjut ined. Mesa Camacho, N of Punta Canoas, Spjut 13061, Apr 1994

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Niebla angulata, Spjut ined.
Mesa Camacho, N of Punta
Canoas, Spjut 13063, Apr 1994

Geographical data for
Niebla angulata


Geographical data for
Niebla marinii

 
    

     Niebla marinii is a lichen that is endemic to the Baja California peninsula, found along the Pacific Coast in the Northern Vizcaíno Desert from Morro Santo Domingo north to San Fernando Canyon. It is recognized by having salazinic-acid and wide spreading-arcuate isodichotmous branches, terminating in horseshoe, horse tail or whip like branchlets. The cortex is glazed and glossy from which pycnidia appear sharply defined and conspicuously abundant on the terminal branchlets. Apothecia occur in >90% of the thalli, usually disciform with a reflexed branchlet. 

      Niebla marinii  was abundant at the type locality on red volcanic rocks.  Their thalli were all remarkably similar in their morphology as well as their chemistry, unlike Niebla communities at other locations. However, this may be due to relatively recent establishment of  a Niebla community at this location.  Associated species included N. lobulata (sekikaic acid), N. flabellata (salazinic acid), N. undulata (divaricatic acid), N. siphonoloba (sekikaic acid) and Roccella fimbriata.

     Specimens from Punta Cono have a more prominent reticulately ridged cortex, but are considered N. marinii by the characteristic pattern of isodichotomous whip-like branches  Specimens from Mesa Camacho have sharply prismatic branches with prominent transverse cortical ridges between the angular margins, distinctive features worthy of taxonomic status; hence, the proposed name, Niebla angulata (Spjut ined.).

   The closely related Niebla josecuervoi (salazinic acid) differs by the development of numerous secondary branchlets along the upper side of a main branch. Its branches are more rigid,  generally straight to geniculate (abruptly bent), not whip-like; its cortex is usually dull with more sharply defined ridges. Other species of Niebla with whip-like branches differ by their chemical constituents; these include N suffnessii (sekikaic acid) and N. juncosa var. juncosa (divaricatic acid) at the Morro Santo Domingo location where also rare, occurring on sand under bushes, not on lava.