Table 1. Hawthorn individuals used here as sources of leaf tissue for DNA extraction, and for which ploidy level determined previously by flow cytometry (publications cited).
Classification follows Lo, Stefanović & Dickinson (2007); C. germanica, Ufimov (2013); C. subg. Sanguineae, Phipps (2015), and Ufimov & Dickinson, (2020). Voucher specimens are deposited in the Green Plant Herbarium of the Royal Ontario Museum (TRT). TRT accession numbers are linked to online specimen images; Target capture sequence data will be deposited in the National Center for Biotechnology Information Sequence Read Archive (NCBI SRA); TADCR numbers are searchable on the Barcode of Life Data System (BOLD; http://v4.boldsystems.org/). Sporophytic chromosome numbers (2n) are reported as multiples of the base number, x = 17, based on flow cytometric determinations. Stamen numbers per flower (A#). Localities represented here are in the United States or Canada. One sample of C. chrysocarpa lacks a flow cytometric ploidy determination; it is presumed 4x based on data from another indistinguishable individual in the same population.
| TRT Accession, NCBI SRA, BOLD, and sample numbers (this study) | 2n; A# |
Collector & number | Publication | State level | County level | Locality; Latitude, Longitude (degrees) or accession number for botanical garden specimens | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Crataegus L. | |||||||||||
| subg. Mespilus Ufimov & T.A. Dickinson | |||||||||||
| sect. Mespilus T. A. Dickinson & E. Y. Y. Lo | |||||||||||
| C. germanica (L.) Kuntze | TRT00026642; SAMN16630157; TADCR097-10; s07 | 2x A30 |
Dickinson, T.A. s.n. | Zarrei et al. (2015) | California | Alameda Co. | Cultivated; U. of California Botanic Garden (78.0184) | ||||
| subg. Brevispinae (Beadle) Ufimov & T. A. Dickinson | |||||||||||
| sect. Brevispinae Beadle ex Schneider | |||||||||||
| C. brachyacantha Sarg. & Engelm. | TRT00000028; SAMN16630160; TADCR073-10; s10 | 2x A20 |
Reid, C. 5203 | Talent & Dickinson (2005); Zarrei et al., (2015) | Louisiana | Morehouse Parish | ca. 3.75 miles NE of Oak Ridge; 32.66, -91.73 | ||||
| subg. Crataegus | |||||||||||
| sect. Crataegus | |||||||||||
| ser. Crataegus | |||||||||||
| C. monogyna Jacq. | TRT00000394; SAMN16630171; TADCR109-10; s21 | 2x A20 |
Dickinson, T.A. 2003-79 | Zarrei et al. (2015) | Ontario | Middlesex Co. | Denfield sideroad 0.25 miles S of Hwy 16; 43.07, -81.40 | ||||
| subg. Americanae El-Gazzar | |||||||||||
| sect. Coccineae Loudon | |||||||||||
| ser. Aestivales (Sarg.) Rehder | |||||||||||
| C. opaca Hook. & Arn. | TRT00002042; SAMN16630158; TADCR020-10; s08 | 2x A20 |
Dickinson, T.A. 2003-33 | Talent & Dickinson (2005); Zarrei et al., (2015) | Louisiana | De Soto Parish | Cultivated; Trey Lewis home place, 31.84, -93.77 | ||||
| ser. Crus-galli (Loud.) Rehder | |||||||||||
| C. crus-galli L. | TRT00002636; SAMN16630159; s09 | 2x A20 | Talent, N. NT489 | Published here with permission of N. Talent | Georgia | Houston Co. | South of Big Indian Creek, road verge; 32.41, -83.57 | ||||
| ser. Punctatae (Loud.) Rehder | |||||||||||
| C. punctata Jacq. | TRT00002247; SAMN16630155; TADCR104; s05 | 2x A20 | Purich, M.A. 81 | Zarrei et al. (2015) | Ontario | Durham R.M. | Bowmanville, between two forks of Bowmanville Creek; 43.90, -78.68 | ||||
| ser. Rotundifoliae (Egglest. ex Egglest.) Rehder | |||||||||||
| C. chrysocarpa Ashe | TRT00000270; SAMN16630156; s06 | 4x A10 | Lo, E.Y.Y. EL-122 | Talent & Dickinson (2005) | Idaho | Nez Perce Co. | Hwy 3, at Little Potlatch Creek; 46.52, -116.73 | ||||
| C. chrysocarpa Ashe | TRT00020434; SAMN16630167; s17 | A10 | Coughlan, J. JC174 | See TRT barcode link. | Washington | Okanogan Co. | N side of Palmer Lake; 48.92 -119.64 | ||||
| ser. Triflorae (Beadle) Rehder | |||||||||||
| C. triflora Chapm. | TRT00021429; SAMN16630172; TADCR107; s22 | 2x A30 | Dickinson, T.A. 2003-23 | Talent & Dickinson (2005); Zarrei et al., (2015) | Alabama | Autauga Co. | Jones Bluff, SSW of Peace; 32.40, -86.78 | ||||
| sect. Macracanthae Loudon | |||||||||||
| ser. Macracanthae (Loud.) Rehder | |||||||||||
| C. calpodendron (Ehrh.) Medikus | TRT00000105; SAMN16630151; s01 | 2x A20 | Dickinson, T.A. 2002-07A | Talent & Dickinson (2005) | Massachusetts | Suffolk Co. | Cultivated; Arnold Arboretum (AA277-68A) | ||||
| C. macracantha Lodd. ex Loud. var. occidentalis (Britt.) Egglest. | TRT00000142; SAMN16630161; s11 | 4x A10 | Talent, N. NT347 | Published here with permission of N. Talent | Colorado | Boulder Co. | Gregory Canyon; 40.00, -105.29 | ||||
| C. macracantha Lodd. ex Loud. var. occidentalis (Britt.) Egglest. | TRT00020260; SAMN16630168; TADCR280; s18 | 4x A10 | Coughlan, J. JC168 | Zarrei et al. (2015) | Washington | Okanogan Co. | Eastside River Rd., N of Omak; 48.50, -119.50 | ||||
| subg. Sanguineae Ufimov | |||||||||||
| sect. Salignae T.A. Dickinson & Ufimov | |||||||||||
| ser. Cerrones J.B. Phipps | |||||||||||
| C. rivularis Nutt. ex Torr. & A.Gray | TRT00000946; SAMN16630154; TADCR181; s04 | 4x A10 | Lo, E. EL-199 | Talent & Dickinson (2005); Zarrei et al., (2015) | Idaho | Bear Lake Co. | US 89 W of Whitman Hollow; 42.34, -111.21 | ||||
| C. rivularis Nutt. ex Torr. & A.Gray | TRT00000965; SAMN16630162; TADCR165; s12 | 4x A10 | Dickinson, T.A. 2007-02 | Zarrei et al. (2015) | Nevada | Elko Co. | Starr Valley, on N side of Dennis Flats Road; 41.01, -115.27 | ||||
| C. rivularis Nutt. ex Torr. & A.Gray | TRT00000976; SAMN16630170; s20 | 4x A10 | Talent, N. NT357 | Published here with permission of N. Talent | New Mexico | Rio Arriba Co. | US84, S end of Chama; 36.87, -106.58 | ||||
| C. saligna Greene | TRT00001025; SAMN16630163; s13 | 2x A20 | Dickinson, T.A. 2001-07 | Dickinson et al. (2008) | Colorado | Rio Blanco Co. | Rio Blanco Rd 8, N bank of White River; 40.03, -107.86 | ||||
| C. saligna Greene | TRT00001047; SAMN16630164; TADCR120; s14 | 2x A20 | Dickinson, T.A. 2004-05 | Talent & Dickinson (2005); Zarrei et al. (2015) | Utah | Duchesne Co. | River Road, 4 miles N of Duchesne; 40.21, -110.41 | ||||
| sect. Douglasianae (Rehder) C.K. Schneid. | |||||||||||
| ser. Douglasianae (Loud.) Poletiko | |||||||||||
| C. douglasii Lindl. | TRT00001145; SAMN16630153; TADCR001; s03 | 4x A10 | Lo, E. EL-11 | Zarrei et al. (2015) | Ontario | Grey Co. | Keppel Twp., Colpoy’s Range; 44.80, -81.00 | ||||
| C. douglasii Lindl. | TRT00001279; SAMN16630169; TADCR177; s19 | 4x A10 | Lo, E. EL-170 | Zarrei et al. (2015) | Idaho | Adams Co. | W bank of Goose Creek, S of Last Chance Campground; 44.99, -116.19 | ||||
| C. douglasii Lindl. | TRT00020479; SAMN16630166; s16 | 3x A10 | Coughlan, J. JC224 | See TRT barcode link. | Oregon | Union Co. | Hwy 203, SE of Union; 45.13 -117.71 | ||||
| C. suksdorfii (Sarg.) Kruschke | TRT00020315; SAMN16630174; s24 | 2x A20 | Coughlan, J. JC033 | Coughlan (2012) | California | Siskiyou Co. | Fay Lane, just W of Scott R.; 41.40, -122.84 | ||||
| C. suksdorfii (Sarg.) Kruschke | TRT00001805; SAMN16630165; s15 | 2x | Zika, P.F. 18485 | Zarrei et al. (2015) | Washington | Clark Co. | ca. 1.5 air miles NNW of Ridgefield; 45.83, -122.75 | ||||
| sect. Sanguineae Zabel ex C.K. Schneid. | |||||||||||
| ser. Nigrae (Loudon) Russanov | |||||||||||
| C. nigra Waldst. and Kit. | TRT00001999; SAMN16630173; TADCR025; s23 | 2x A20 | Dickinson, T.A. 2318-50 | Talent & Dickinson (2005); Zarrei et al. (2015) | Québec | Cultivated; Jardin Botanique de Montréal, Arboretum (2318-50) | |||||
| ser. Sanguineae (Zabel ex C.K. Schneid.) Rehder | |||||||||||
| C. wilsonii Sarg. | TRT00002055; SAMN16630152; TADCR114-10; s02 | 2x A20 | Dickinson, T.A. s.n. | Talent & Dickinson, (2005); Zarrei et al., (2015) | Massachusetts | Suffolk Co. | Cultivated; Arnold Arboretum (AA749-74A) | ||||