Plant Index


 
 
 
 

Mitella diphylla

Mitella diphylla L.

two-leaf bishop's-cap, two-leaved miterwort, twoleaf miterwort

Synonym(s): Mitella oppositifolia
Mitella diphylla (Two-leaf Bishop's-cap)
Image ID: 15711
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: MIDI3
SCIENTIFIC NAME: Mitella diphylla
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2018-11-27

GENUS INDEX

GENUS CODE: MITEL
GENUS SCIENTIFIC: Mitella
GENUS AUTHORITY: L.
GENUS COMMON: Miterwort
GENUS SUMMARY: As traditionally circumscribed, a genus of about 20 species, herbs, of cold temperate e. North America, w. North America, and e. Asia. Soltis (2007), Okuyama, Pellmyr, & Kato (2008), and Folk & Freudenstein (2014) indicate that Mitella as currently circumscribed is polyphyletic and is likely to be divided; Mitella diphylla will remain in Mitella, as it is the type of the genus, probably along with only one additional species, Mitella nuda Linnaeus.
GENUS IDENTIFICATION:
GENUS REFERENCES: Soltis & Freeman in FNA (2009); Soltis in Kubitzki, Bayer, & Stevens (2007).

FAMILY INDEX

FAMILY CODE: SAXIFR
FAMILY SCIENTIFIC: Saxifragaceae
FAMILY AUTHORITY: A.L. de Jussieu 1789
FAMILY COMMON: Saxifrage Family
FAMILY SUMMARY: If narrowly circumscribed (as here), a family of about 35 genera and 500-650 species, herbs (mianly perennial), nearly cosmopolitan, but especially diverse in warm temperate and cold temperate regions of North America and Eurasia. The circumscription of a much narrower Saxifragacaeae is clearly warranted, based on a wide variety of data, and strongly corroborated by molecular data (Morgan & Soltis 1993 and many later references).
FAMILY REFERENCE: Wells & Elvander in FNA (2009); Spongberg (1972); Morgan & Soltis (1993); Soltis in Kubitzki, Bayer, & Stevens (2007). [also see GROSSULARIACEAE, HYDRANGEACEAE, ITEACEAE, PARNASSIACEAE, and PENTHORACEAE]

NCBG DESCRIPTIVES

INTRO: Erect, rhizomatous perennial found in moist rocky forests, rocky seeps and seepage swamps, especially over mafic or calcareous rocks.
STEMS: Stems thin, sparsely hairy below and glandular-hairy above.
LEAVES: Leaves mostly basal, with a pair of opposite (sometimes alternate) leaves on the stem and sometimes a third leaf just above; petiolate to sessile; oval to round in outline; 1-3 in. long; divided into 3-5 shallow lobes (the terminal lobe prolonged); palmately veined; toothed.
INFLORESCENCE:
FLOWERS: Flowers 5--20 in a narrow terminal raceme, white, less than ¼ in. wide, consisting of 5 spreading tiny petals that are pinnately divided into minute, obliquely ascending segments, creating a snowflake-like appearance. The calyx is bell-shaped.
FRUITS: Fruit a 2-beaked capsule containing numerous, tiny seeds.
COMMENTS:
HEIGHT: 8-16 in.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT: Opposite
LEAF COMPLEXITY: Simple
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY: Radial (Actinomorphic)
BLOOM TIME: Apr-Jun
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x x

BLOOM COLOR: White
White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable
x

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Moist forests
NATIVE RANGE: eastern North America

HORTICULTURAL
Plant Sale Text: A member of the Saxifragaceae family along with Tiarella, Astilbe and Heuchera, Bishop’s cap is found growing in rich wet woods and along stream banks in the mountains of VA, NC, SC, and GA, and east to the piedmont and coastal plain of VA. This species prefers medium to deep shade and can tolerate drier conditions. The flowers are sparsely arranged on a short, slender, erect spike and have delicate fringed petals. Bishop’s cap is a great addition to the shade garden and is most effective when planted en masse as a ground cover.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average, Moist/Wet
LIGHT EXPOSURE: Part Shade, Shade
MINIMUM HARDINESS ZONE: 4
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE:
WILDLIFE VALUE: Bee Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
97 2012-0069 2012-06-06 98 View
3385 1991-0009 View
3593 1991-0256 View
3913 1992-0061 View
8953 1991-0251 0000-00-00 1207 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
98 HORT 2011-05-02 Ward View
1207 HORT 1991-04-24 View
1382 HORT 2006-05-01 Bryan View
1706 HORT 2005-01-01 Bryan View
1720 HORT 2005-01-01 Bryan View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
143 97 34 Mixon 2012-05-31 View
144 97 142 Steen 2012-05-01 View
145 97 66 Steen 2012-05-01 View
146 97 65 Steen 2012-05-01 View
147 97 78 Steen 2012-05-01 View
148 97 79 Liloia 2012-10-12 View
149 97 74 Liloia 2013-11-27 View
150 97 77 Steen 2012-05-01 View
151 97 79 Steen 2012-05-01 View
5617 3385 75 NCBG staff 1990-03-19 View
5868 8953 76 NCBG staff 1991-04-24 View
5873 3593 188 NCBG staff 1991-05-08 View
6227 3913 75 NCBG staff 1992-04-23 View

USDA PLANTS DATABASE

USDA Symbol: MIDI3
USDA Common Name: Twoleaf Miterwort
Native Status: L48 (N), CAN (N)
Distribution: USA (AL, AR, CT, DC, DE, GA, IA, IL, IN, KY, MA, MD, MI, MN, MO, MS, NC, NH, NJ, NY, OH, PA, SC, TN, VA, VT, WI, WV), CAN (ON, QC)
Duration: Perennial
Growth Habit: Forb/herb

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACU FACU FACU FACU FACU

This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast

WEAKLEY FLORA

SCIENTIFIC NAME: Mitella diphylla
COMMON NAME: Two-leaved Miterwort
SYNONYMY: [= C, F, FNA, G, GW, K, Mo, Pa, RAB, S, Va, W, WV]
PHENOLOGY: Apr-Jun.
HABITAT: Mesic, rocky forests, rocky seeps, and seepage swamps, especially over mafic or calcareous rocks.
COMMENTS: QC west to MN, south to e. VA, w. NC, nw. SC, ne. GA, nw. GA, and MO. The fringed petals will reward a close look.
RANGE MAP: Mitella diphylla.png

Key to Map Symbols
ABOUT FAMILY (Weakley Flora)
Saxifragaceae A.L. de Jussieu 1789 (Saxifrage Family)
SUMMARY: If narrowly circumscribed (as here), a family of about 35 genera and 500-650 species, herbs (mianly perennial), nearly cosmopolitan, but especially diverse in warm temperate and cold temperate regions of North America and Eurasia. The circumscription of a much narrower Saxifragacaeae is clearly warranted, based on a wide variety of data, and strongly corroborated by molecular data (Morgan & Soltis 1993 and many later references).
REFERENCE: Wells & Elvander in FNA (2009); Spongberg (1972); Morgan & Soltis (1993); Soltis in Kubitzki, Bayer, & Stevens (2007). [also see GROSSULARIACEAE, HYDRANGEACEAE, ITEACEAE, PARNASSIACEAE, and PENTHORACEAE]
ABOUT GENUS (Weakley Flora)
Mitella L. (Miterwort)
SUMMARY: As traditionally circumscribed, a genus of about 20 species, herbs, of cold temperate e. North America, w. North America, and e. Asia. Soltis (2007), Okuyama, Pellmyr, & Kato (2008), and Folk & Freudenstein (2014) indicate that Mitella as currently circumscribed is polyphyletic and is likely to be divided; Mitella diphylla will remain in Mitella, as it is the type of the genus, probably along with only one additional species, Mitella nuda Linnaeus.
REFERENCE: Soltis & Freeman in FNA (2009); Soltis in Kubitzki, Bayer, & Stevens (2007).

HERBARIUM RESOURCES

SERNEC: Find Mitella diphylla in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Mitella diphylla in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Mitella diphylla in USDA Plants
NPIN: Find Mitella diphylla in NPIN Database
FNA: Find Mitella diphylla in the Flora of North America (if available)
Google: Search Google for Mitella diphylla

NCBG IMAGE RECORDS

ID IMAGE1: 15711
ID IMAGE2: 0
ID IMAGE3: 22945

From the Image Gallery


Image ID: 15712

Image ID: 38002

Image ID: 38003

Image ID: 22945

Image ID: 22946

Image ID: 22947

Image ID: 22948

Image ID: 22949

Image ID: 31024

Image ID: 31025

Image ID: 31026

Image ID: 31027

Image ID: 31028

Image ID: 11524
15 photo(s) available in the Image Gallery

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