CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-14oct 10-10-14
Status: record holocarpha_macradenia - Wed, Oct. 22, 2014 00:47 ET c
Holocarpha macradenia
common nameSanta Cruz tarplant
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Charles Webber © 1998 California Academy of Sciences  Follow image link for photo data.
familyAsteraceae
life formannual herb
CA Rare Plant Rank
List 1B.1
CA-Endemic
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  09/79
federal listingThreatened  03/20/00
where found
(12/2) v7 maps currently unavailable - use link below for v8 details and maps

Topographic quads (13):
Watsonville East (386B) 3612186, Prunedale (386C) 3612176, Watsonville West (387A) 3612187, Soquel (387B) 3612188, Santa Cruz (387E) 3612281, Laurel (407C) 3712118, Felton (408D) 3712211, Hayward (447A)* 3712261, Briones Valley (465B) 3712282, Richmond (466A)* 3712283, Oakland West (466D)* 3712273, San Rafael (467A)* 3712285, Mare Island (483D)* 3812213
quad data info

Counties, states, regions:
Alameda (ALA)*, Contra Costa (CCA)*, Monterey (MNT), Marin (MRN)*, Santa Cruz (SCR), Solano (SOL)
counties map
CNDDB Quick Viewer
Web application for exploring the CNDDB elements reported at the quad level.
(broadband recommended)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Coastal prairie (CoPrr)
•Coastal scrub (CoScr)
•Valley and foothill grassland (VFGrs)/often clay, sandy
blooming period Jun-Oct  
elevation range10 - 220 meters
notes
All extant CCA Co. occurrences (465B, 466A) are introduced; nearly half have failed. Last remaining natural population in the S.F. Bay Area extirpated by development in 1993. Seriously threatened by urbanization, agriculture, non-native plants, and lack of appropriate ecological disturbance. See Fremontia 5(4):15-16 (1978) for species account.
full nameHolocarpha macradenia (DC.) Greene
Version 8    INVENTORY VERSION 8 - Details for this taxon, including GIS and other links

Additional information:
standard acronym  HOMA Element Code  PDAST4X020
CalFlora
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). 2014. Inventory of Rare and Endangered Plants (online edition, v7-14oct). California Native Plant Society. Sacramento, CA. Accessed on Wed, Oct. 22, 2014 from http://www.cnps.org/inventory

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