Crataegus berberifolia |
Crataegus populnea |
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barberry hawthorn, barberry-leaf hawthorn |
poplar hawthorn |
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Habit | Shrubs or trees, 60 dm. | Shrubs or trees, 60 dm. | ||||
Stems | twigs: new growth orange-brown or green tinged with red, ± pubescent, 1-year old brown, older gray; thorns on twigs ± straight or recurved, 2-years old shiny black to chestnut brown, fine or stouter, (2–)3–4(–6.5) cm. |
twigs: new growth reddish green, glabrous, 1-year old reddish brown, sometimes dark, older mid gray; thorns on twigs recurved, 2-years old dark blackish red, ± shiny, ± slender, 3–5 cm. |
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Leaves | petiole 4–6 mm, length 13–18% blade, glabrescent, eglandular; blade narrowly obovate to oblanceolate, (2.5–)3(–4) cm, coriaceous, base narrowly cuneate, lobes 0, margins finely crenate or serrate except at base, or only beyond widest part, venation craspedodromous, veins 4–6 per side, apex subacute to obtuse, lustrous, abaxial surface ± densely pilose on veins, sometimes pubescent on surface, adaxial hairy young, glabrescent or becoming scabrous. |
petiole 2–4 cm, glabrous, eglandular or sparsely glandular; blade ± ovate, 4–7 cm length/width = to 1.5, subcoriaceous, base broadly rounded to broadly cuneate, rarely truncate, lobes 3–5 per side, sinuses usually shallow, lobe apex acute to acuminate, margins strongly serrate, veins 5 or 6 per side, apex acuminate, adaxial surface glabrate to appressed-hairy young, glabrescent; extension-shoot leaf blades widest 2/5 from base, length/width = 1.3–1.4, sinuses not deep, LII less than 25%, base broadly cuneate, rarely truncate. |
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Inflorescences | 8–12-flowered; branches densely pubescent; bracteoles linear, margins glandular. |
5–12-flowered; branches glabrous; bracteoles few, very narrow, margins glandular. |
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Flowers | 10–20 mm diam.; hypanthium villous or glabrous; sepals 3–5 mm, margins entire, abaxially glabrous; stamens 10 or 20, anthers cream or pink; styles 2 or 3. |
16–18 mm diam.; hypanthium glabrous; sepals narrowly triangular, 5–6 mm, margins subentire, abaxially glabrous; stamens 6–10, anthers red to purple; styles 3 or 4. |
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Pomes | reddish to yellow, suborbicular, 8–10 mm diam., glabrous; sepals erose or patent; pyrenes 2 or 3. |
reddish orange to bright red, suborbicular to oblong, 8–11 mm diam.; flesh hard; sepals commonly erose, patent-reflexed; pyrenes 3 or 4, dorsally grooved. |
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2n | = 68. |
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Crataegus berberifolia |
Crataegus populnea |
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Phenology | Flowering Apr–May; fruiting Sep–Oct. | |||||
Habitat | Brush, fencerows | |||||
Elevation | 10–400 m (0–1300 ft) | |||||
Distribution |
AL; AR; FL; GA; KS; LA; MO; MS; NC; SC; TN
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MI; NY; OH; PA; VA; WI; WV; ON |
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Discussion | Varieties 2 (2 in the flora). Crataegus berberifolia is widespread from Texas to Missouri, Florida, and Virginia; it is particularly abundant in Louisiana. Crataegus berberifolia is little differentiated from some forms of C. crus-galli, except in indumentum; it has relatively small and less variably shaped leaves. Its distribution is quite different. Intermediates with hairy leaves and glabrous inflorescences or nearly glabrous leaves and hairy inflorescences may represent hybrids with C. crus-galli (where they might be reached in the key). Such a situation is found in C. araioclada. Abrasion of the adaxial leaf pubescence may occur, rendering identification more difficult with fruiting material. Crataegus berberifolia has a plethora of yellow and orange-fruited forms, particularly from southern Louisiana. Crataegus fera and C. tersa are red-fruited, C. crocina yellow. The fruit color in the type is unknown; E. J. Palmer (in specimen annotation) called it yellow-orange. A form with exceptionally white-tomentose leaves near Copenhagen, Louisiana, is probably this species. Crataegus regalis var. paradoxa (Sargent) E. J. Palmer, from Missouri and adjacent Kansas and Arkansas, is probably a hybrid between the deeply serrated 'regalis' leaf form of C. crus-galli and a form of C. berberifolia. Two common forms of C. berberifolia occur, treated here as varieties: var. engelmannii with ten pink anthers and var. berberifolia with 20 cream anthers. Forms with 20 pink or ten cream anthers also occur sporadically. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Crataegus populnea occurs from Wisconsin to New York, to Ohio, and Virginia; it is common at least from southern Ontario to Pennsylvania. Dubious specimens from Georgia and South Carolina have small leaves and are only differentiated from C. iracunda (ser. Tenuifoliae) by their more coriaceous nature. Being out of range for C. populnea, they may represent an odd form of C. iracunda. Crataegus compta is a variant with more or less pyriform-oblong pomes. Crataegus populnea might be mistaken for C. macrosperma but it has more coriaceous leaves, usually significantly larger in the area of sympatry, and a harder fruit. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 9, p. 540. | FNA vol. 9, p. 569. | ||||
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Coccineae > ser. Crus-galli | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Coccineae > ser. Populneae | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | C. compta, C. iracunda var. populnea, C. luxuriosa | |||||
Name authority | Torrey & A. Gray: Fl. N. Amer. 1: 469. (1840) | Ashe: Ann. Carnegie Mus. 1: 395. (1902) | ||||
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