Species Details

Tuctoria mucronata

Crampton's tuctoria or Solano grass

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Scientific Name:
Tuctoria mucronata (Crampt.) J. Reeder
Common Name:
Crampton's tuctoria or Solano grass
Family: Poaceae
Element Code: PMPOA6N020
USDA Plants Symbol: TUMU
Synonyms/Other Names:
Fed List: FE (1978-09-28)
State List: CE (1979-07-01)
Global Rank: G1
State Rank:
S1
CA Rare Plant Rank: 1B.1
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: Apr-Aug
Elevation:
5 - 10 meters
15 - 35 feet
General Habitat:
  • Valley and foothill grassland (mesic)
  • Vernal pools
General Micro Habitat:
Micro Habitat:
Notes:
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 MadroƱo 15(4):106-108 (1959) for original description, and American Journal of Botany 69:1082-1095 (1982) for revised taxonomy.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 4
Element Occurrence Ranks:
A B C D X U
0 1 2 0 0 1
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 4
Presence:
Presumed Extant 4
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Solano (SOL), Yolo (YOL)
Quads: Name (Quad Code)
Dozier (3812137), Saxon (3812146)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads