CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record tuctoria_mucronata - Wed, Dec. 1, 2021, 22:55 ET b
Tuctoria mucronata
common nameCrampton's tuctoria or Solano grass
CalPhotos image
more photos
© 1999 John Game  Follow image link for photo data.
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 listingEndangered  07/79
federal listingEndangered  09/28/78
where found
MAPS - Use v8 link below.

Topographic quads (2):
Saxon (497B) 3812146, Dozier (498D) 3812137
quad data info

Counties, states, regions:
Solano (SOL), Yolo (YOL)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Valley and foothill grassland (VFGrs)(mesic)
•Vernal pools (VnPls)
blooming period Apr-Aug  
elevation range5 - 10 meters
Known from only three occurrences: one at Olcott Lake at Jepson Prairie Preserve, one nearby on private land, and one south of Davis on DOD land. Only four plants found at Jepson Prairie in 1993, and none in 1994-1996, 1998, 2000 and later; site presumed extirpated in 2005. Threatened by non-native plants. See Madroņo 15(4):106-108 (1959) for original description, and American Journal of Botany 69:1082-1095 (1982) for revised taxonomy.
full nameTuctoria mucronata (Crampt.) J. Reeder
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  TUMU Element Code  PMPOA6N020
CNPS chapter link chapter content  Sacramento Valley page for this species
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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 Wed, Dec. 1, 2021 from

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