Table 7 Mean cover (%) of understory plant species found within six sample sites in Big Basin Redwoods State Park, Boulder Creek, California, USA. Data were collected in 2019 to determine the influence of burns conducted between 1999 and 2011 on vegetation, forest structure, and fuel load. Asterisk (*) denotes non-native species. Dashes (-) mean species not found

 Frangula californica

-

0.03

0.03

-

-

-

 Lonicera hispidula (Lindl.) Douglas ex Torr. & A. Gray

0.6

1.7

0.5

0.06

0.5

0.4

 Morella californica

-

0.6

-

-

-

-

 Rosa gymnocarpa Nutt.

-

-

0.1

-

0.1

-

 Rubus ursinus Cham. & Schltdl.

0.4

-

-

0.05

-

-

 Symphoricarpos albus

-

-

-

-

0.03

-

 Symphoricarpos mollis Nutt.

-

0.03

-

-

-

-

 Toxicodendron diversilobum (Torr. & A. Gray) Greene

0.09

0.01

-

0.05

-

-

 Vaccinium ovatum

4.5

19.8

0.1

0.7

-

1.4

 Whipplea modesta Torr.

-

0.4

-

0.9

0.5

0.09

 Asarum caudatum Lindl.

-

-

-

-

0.02

-

 Bromus Scop. sp.

0.006

0.01

-

-

0.4

0.006

 Calamagrostis rubescens Buckley

-

-

0.2

-

-

0.7

 Carex globosa Boott

0.006

0.3

-

0.4

1.6

-

 Carex L. sp.

-

-

-

-

1.2

0.9

 Carex tumulicola Mack.

-

-

-

-

0.2

-

 Dryopteris arguta (Kaulf.) Maxon

0.05

0.04

0.4

-

-

-

 Epipactis helleborine *

0.03

-

0.04

0.2

0.01

-

 Equisetum arvense L.

-

-

-

0.01

-

-

 Festuca occidentalis Hook.

-

-

-

-

0.03

-

 Galium californicum Hook. & Arn.

1.08

0.02

-

0.03

0.02

-

 Iris douglasiana Herb.

-

-

0.4

-

-

-

 Iris fernaldii

0.2

0.09

0.1

0.2

0.1

0.3

 Lysimachia latifolia

0.04

0.2

0.05

0.1

0.9

0.4

 Maianthemum racemosum (L.) LInk

0.03

-

-

-

0.06

0.003

 Maianthemum stellatum (L.) LInk

0.03

-

-

-

-

-

 Oxalis oregana Nutt.

0.5

0.4

3.06

0.2

12.5

-

 Pityrogramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw.

-

-

-

0.003

-

-

 Polygala californica Nutt.

0.2

0.09

0.1

0.02

0.1

0.1

 Polypodium californicum Kaulf.

0.06

-

0.006

-

-

-

 Polystichum munitum (Kaulf.) C. Presl

0.1

0.04

0.5

0.02

0.04

-

 Prosartes hookeri Torr.

-

0.01

0.06

-

0.1

0.08

 Pteridium aquilinum (L.) Kuhn var. pubescens Underw.

-

0.03

-

-

0.006

-

 Stachys bullata Benth.

-

0.04

-

0.05

0.03

-

 Trillium ovatum Pursh

0.1

0.01

0.03

-

0.04

0.01

 Vicia americana ssp. americana Willd.

0.05

0.04

-

0.01

-

-

 Viola ocellata Torr. & A. Gray

0.01

-

0.01

-

0.08

0.2

 Viola sempervirens Greene

-

-

0.05

0.01

0.08

-