Advanced Search Map Locator
View Settings
Nurseries Carrying this Plant Add Current Plant To List Edit Current Plant
Show all Photos

Butterflies Garden Planner My Plant Lists Nurseries Planting Guide Contact Calscape About Calscape
Tap map to see plants native to location
Order by Popularity Order by Common Name Order by Scientific Name Order by # of Butterflies Hosted
Show nursery cultivars Hide nursery cultivars
Show plants not in nurseries Hide plants not in nurseries
Grid view Text view
Taw Man-root
Marah watsonii
About Taw Man-root (Marah watsonii) 0 Nurseries Carry This Plant Marah watsonii, the taw manroot, is an uncommon species in the genus Marah endemic to central northern California. Its range is bounded by the eastern coastal foothills, the western foothills of the northern Sierra Nevada and Cascades ranges and from Lake Berryessa in the south to Lake Shasta in the north. Foliage. Taw manroot shares with all Marah species non-twining stems and tendrils. Unlike other manroot species, however, Marah watsonii vines are nearly hairless with a glaucous, grey-green color. Vines appear in late winter or early spring in response to increased rainfall, and can climb or scramble to a length of 6 meters (20 ft).
Plant Description
Plant Type
Plant Type
Vine, Perennial herb

19.7 ft tall

Wildlife Supported

Butterflies & moths hosted ( 2 likely * ) SHOW ALL
Eupithecia subapicata Image
Eupithecia subapicataEupithecia subapicata

Landscaping Information
Natural Setting
Annual Precipitation: 22.7" - 88.3", Summer Precipitation: 0.29" - 2.13", Coldest Month: 41.2" - 51.7", Hottest Month: 65.0" - 75.9", Humidity: 2.07" - 24.75", Elevation: 145" - 4129"

Alternative Names
Common Names: Taw Manroot

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

Sign in to your Calscape Account X

Once signed in, you'll be able to access any previously saved plant lists or create new ones.

Email Address

Sign In