Plant Index


 
 
 

Boykinia aconitifolia

Boykinia aconitifolia Nutt.

brook-saxifrage, aconite-saxifrage, allegheny brookfoam, eastern boykinia

Synonym(s): Boykinia turbinata, Therofon aconitifolium, Therofon turbinatum
Boykinia aconitifolia (Brook-saxifrage)
Image ID: 19315
Image by: Stuart, Will
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: BOAC
SCIENTIFIC NAME: Boykinia aconitifolia
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2018-09-25

GENUS INDEX

GENUS CODE: BOYKI
GENUS SCIENTIFIC: Boykinia
GENUS AUTHORITY: Nutt.
GENUS COMMON: Brookfoam
GENUS SUMMARY: A genus of 7 species, herbs, of e. Asia, e. North America, and w. North America, a classic relictual distribution. The other species are distributed primarily in the Pacific Northwest or Rocky Mountains, with several endemics in Japan and an endemic in the unglaciated portions of AK and e. Siberia.
GENUS IDENTIFICATION: Identification notes: Sometimes mistaken in vegetative condition for Trautvetteria, which is a coarser plant, often occupying similar habitats.
GENUS REFERENCES: Gornall 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: Fuzzy, erect perennial of stream banks, river banks, crevices in spray cliffs around waterfalls, and seepages.
STEMS: Stems branched above in inflorescence, covered with gland-tipped hairs.
LEAVES: Basal leaves long-petioled, round or kidney-shaped, sharply divided into 5–7 toothed lobes; stem leaves similar but smaller.
INFLORESCENCE:
FLOWERS: Flowers on glandular-hairy stalks in compact, terminal panicle that elongates with time; white; to ½ in. wide; consisting of 5 oblong-oval petals, 5 reddish-green sepals and 5 stamens.
FRUITS: Fruit a 2-sectioned capsule.
COMMENTS: A Southern Appalachian endemic.
HEIGHT: 6 - 32 in.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Simple
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY: Radial (Actinomorphic)
BLOOM TIME: June-July
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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: southeastern United States

HORTICULTURAL
Plant Sale Text: A southern Appalachian species, Boykinia aconitifolia, is most commonly found growing in moist mountain woodlands, streamsides, seepages, and crevices in spray cliffs along waterfalls. In June and July this rhizomatous, clump forming, and slow spreading species forms shallow bell shaped creamy white flowers with yellow centers in bunches above lobed green leaves. Perfect for the shade garden, this species performs best in cultivation when planted in moist, fertile, gritty soil. A nice subtle addition to the garden, try planting alongside ferns to create an interesting contrast in foliage. This plant is rarely offered for sale.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average, Moist/Wet, Well-drained
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE: 5
MAXIMUM HARDINESS ZONE: 7
GERMINATION CODE:
WILDLIFE VALUE:
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
96 2012-0068 2012-06-06 97 View
4870 1994-0085 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
97 HORT 2009-07-24 Poythress View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
141 96 34 Liloia 2012-06-01 View
142 96 68 Liloia 2012-06-01 View
7274 4870 27 NCBG staff 1994-06-20 View

USDA PLANTS DATABASE

USDA Symbol: BOAC
USDA Common Name: Allegheny Brookfoam
Native Status: L48 (N)
Distribution: USA (AL, GA, KY, NC, SC, TN, VA, WV)
Duration: Perennial
Growth Habit: Forb/herb

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACW FACW

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

2018 Natural Heritage Program List of Rare Plant Species of North Carolina

NHP IDS RANKROUNDED S RANKG RANKROUNDED G RANKSTATE STATUSFEDERAL STATUS
19523 S3 S3 G4 G4 W1

This information is derived from the 2018 North Carolina Natural Heritage Program List of Rare Plant Species.

WEAKLEY FLORA

SCIENTIFIC NAME: Boykinia aconitifolia
COMMON NAME: Brook-saxifrage, Aconite-saxifrage, Eastern Boykinia, Allegheny Brookfoam
SYNONYMY: [= C, F, FNA, G, GW, K, RAB, Va, W; = Therophon aconitifolium (Nuttall) Millspaugh - S; > B. turbinata (Rydberg) Fedde; > Therofon turbinatum Rydberg]
PHENOLOGY: Jun-Jul.
HABITAT: Streambanks, riverbanks, in crevices in spray cliffs around waterfalls, seepages.
COMMENTS: A Southern Appalachian endemic: sw. VA and s. WV, south through w. NC, e. TN, and nw. SC, to n. GA and ne. AL. Apparently closely related to the Japanese endemic B. lycoctonifolia (Maximowicz) Engler.
RANGE MAP: Boykinia aconitifolia.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)
Boykinia Nutt. (Brookfoam)
SUMMARY: A genus of 7 species, herbs, of e. Asia, e. North America, and w. North America, a classic relictual distribution. The other species are distributed primarily in the Pacific Northwest or Rocky Mountains, with several endemics in Japan and an endemic in the unglaciated portions of AK and e. Siberia.
REFERENCE: Gornall in FNA (2009); Soltis in Kubitzki, Bayer, & Stevens (2007)

HERBARIUM RESOURCES

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

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 19315
ID IMAGE2: 19316
ID IMAGE3: 19315

From the Image Gallery


Image ID: 7723

Image ID: 7724

Image ID: 10689

Image ID: 19316
5 photo(s) available in the Image Gallery

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