CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record stylocline_masonii - Sun, Dec. 5, 2021, 12:16 ET b
Stylocline masonii
common nameMason's neststraw
CalPhotos image
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life formannual herb
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G1     G1: Less than 6 occurrences OR less than 1,000 individuals OR less than 2,000 acres.
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (12):
Acton (136B) 3411842, Rosedale (240B) 3511942, Gosford (240D) 3511931, Camatta Ranch (245A) 3512043, Pozo Summit (245D) 3512033, Weldon (260A) 3511863, Lake Isabella North (260B) 3511864, Cholame (268A) 3512063, Camatta Canyon (268D) 3512053, Cholame Valley (292D) 3512073, Tierra Redonda Mountain (294C) 3512078, Bryson (295D) 3512171
quad data info

Counties, states, regions:
Kern (KRN), Los Angeles (LAX), Monterey (MNT), San Luis Obispo (SLO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chenopod scrub (ChScr)
•Pinyon and juniper woodland (PJWld)/sandy
blooming period Mar-May  
elevation range100 - 1200 meters
Collected only once (1991) since 1971; need status of occurrences. Most of known sites surveyed unsuccessfully in 1989. Threatened by development and habitat disturbance. See Madroņo 39(2):117 (1992) for original description and 43(3):434-435 (1996) for information on recent collection.
full nameStylocline masonii Morefield
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  STMA10 Element Code  PDAST8Y080
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Sun, Dec. 5, 2021 from

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