Polygonum hickmanii

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Scientific Name: Polygonum hickmanii H.R. Hinds & R. Morgan
Common Name: Scotts Valley polygonum
Family:	Polygonaceae
Element Code:	PDPGN0L310
USDA Plants Symbol:	POHI14
Synonyms/Other Names:

Lifeform: annual herb

Blooming Period: May-Aug

Elevation:
210 - 250 meters
690 - 820 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Known only from Scotts Valley. Fewer than 3500 individuals as of 1998. Threatened by development and non-native plants. Not in TJM (1993). See Novon 5(4):336 (1995) for original description.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	2	100 %
Development	2	100%
Non-native plant impacts	2	100%
Other	2	100%
Road/trail construction/maint.	1	50%
Altered flood/tidal/hydrologic regime	1	50%
ORV activity	1	50%
Erosion/runoff	1	50%
Insufficient population/stand size	1	50%

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	2

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Santa Cruz (SCR)

Quads: Name (Quad Code)
Felton (3712211), Laurel (3712118)

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.

Regional Map

Presumed Extant

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CNPS Rare Plant Inventory