Flora of North America species comparison

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Crataegus scabrida

Crataegus scabrida var. cyclophylla

aubépine scabride, rough hawthorn, scabrous hawthorn

Habit

Shrubs, 30–50 dm.

Stems

twigs: new growth reddish early, glabrous, 1-year old deep tan, 2-years old tan to deep reddish brown, older dull gray;

thorns on twigs at 1-year old shiny, dark brown to nearly black, stout or slender, 4–6 cm.

Leaves

petiole slender, length 40–60% blade, sparsely pubescent or glabrous, eglandular or sessile-glandular;

blade short-ovate to ovate, broadly elliptic to narrowly rhombic, or ± trullate, 3–8 cm, base rounded to cuneate, lobes 3–5 per side, margins serrate, veins 5–7(or 8) per side, apex acute, abaxial surface glabrous, adaxial sparsely to densely appressed-pubescent young, glabrescent.

blades broadly elliptic, 3–5 cm, adaxial surface sparsely to densely appressed-pubescent young, glabrescent.

Inflorescence(s)

6–10-flowered;

branches glabrous or villous.

branches glabrous.

Flowers

15–18 mm diam.;

hypanthium glabrous or pubescent;

sepals narrowly triangular, margins subentire or glandular-serrate;

stamens 7 or 8(–10), anthers pink;

styles 3 or 4.

hypanthium glabrous.

Pomes

reddish or orange-red, suborbicular, 6–9 mm diam., pruinose, glabrous or slightly pubescent;

sepals spreading to ± erose;

pyrenes 2–4, sides often pitted.

= 51.

Crataegus scabrida

Crataegus scabrida var. cyclophylla

Phenology

Flowering May–Jun; fruiting Sep–Oct.

Habitat

Brush, roadsides, woodland edges

Elevation

20–200 m (100–700 ft)

Distribution

CT; MA; ME; MI; NH; NY; VA; VT; WI; NB; NS; ON; QC

[WildflowerSearch map]

[BONAP county map]

CT; MA; VT; ON

Discussion

Varieties 4 (4 in the flora).

Crataegus scabrida is variable in leaf shape and size, as well as in pubescence of adaxial leaf surfaces and pedicels. The species falls into four reasonably well-marked varieties, only the first two of which are frequent. The range of the species as a whole is somewhat poorly documented because of frequent incorrect identification.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Variety cyclophylla grows in southern New England and eastern Ontario.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key

1. Inflorescence branches glabrous	→ 2
1. Inflorescence branches villous	→ 3
2. Leaf blades ovate to narrowly rhombic, 4–7 cm.	var. scabrida
2. Leaf blades broadly elliptic, 3–5 cm.	var. cyclophylla
3. Leaf blades trullate or broadly trullate, 5–8 cm.	var. asperifolia
3. Leaf blades short-ovate to broadly elliptic, 4 cm.	var. egglestonii

Source

FNA vol. 9, p. 523.

FNA vol. 9, p. 524.

Parent taxa

Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Macracanthae > ser. Anomalae

Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Macracanthae > ser. Anomalae > Crataegus scabrida

Sibling taxa

C. aemula, C. aestivalis, C. alabamensis, C. alleghaniensis, C. annosa, C. aprica, C. aquacervensis, C. ashei, C. atrovirens, C. attrita, C. austromontana, C. beata, C. berberifolia, C. biltmoreana, C. brachyacantha, C. brainerdii, C. brazoria, C. brittonii, C. buckleyi, C. calpodendron, C. castlegarensis, C. chrysocarpa, C. coccinea, C. coccinioides, C. cognata, C. collina, C. colonica, C. communis, C. compacta, C. condigna, C. craytonii, C. crocea, C. crus-galli, C. cupressocollina, C. delawarensis, C. dispar, C. dodgei, C. douglasii, C. egens, C. egregia, C. enderbyensis, C. erythropoda, C. exilis, C. eximia, C. extraria, C. fecunda, C. flabellata, C. flava, C. florens, C. floridana, C. florifera, C. fluviatilis, C. formosa, C. frugiferens, C. furtiva, C. gattingeri, C. gaylussacia, C. gilva, C. greggiana, C. harbisonii, C. holmesiana, C. ignava, C. incilis, C. integra, C. intricata, C. invicta, C. iracunda, C. irrasa, C. jesupii, C. jonesiae, C. lacrimata, C. laevigata, C. lanata, C. lancei, C. lanuginosa, C. lassa, C. laurentiana, C. leonensis, C. lepida, C. levis, C. lumaria, C. macracantha, C. macrosperma, C. magniflora, C. margarettae, C. marshallii, C. mendosa, C. meridiana, C. mira, C. mollis, C. monogyna, C. munda, C. nananixonii, C. neobushii, C. nitida, C. oakesiana, C. okanaganensis, C. okennonii, C. opaca, C. opima, C. orbicularis, C. ouachitensis, C. padifolia, C. pennsylvanica, C. persimilis, C. pexa, C. phaenopyrum, C. phippsii, C. pinetorum, C. populnea, C. prona, C. pruinosa, C. pulcherrima, C. punctata, C. purpurella, C. quaesita, C. reverchonii, C. rivularis, C. rivuloadamensis, C. rivulopugnensis, C. roribacca, C. rubella, C. rubribracteolata, C. saligna, C. sargentii, C. schizophylla, C. schuettei, C. segnis, C. senta, C. sheila-phippsiae, C. sheridana, C. shuswapensis, C. sororia, C. spathulata, C. spes-aestatum, C. stolonifera, C. stonei, C. submollis, C. suborbiculata, C. succulenta, C. tecta, C. teres, C. texana, C. tracyi, C. triflora, C. turnerorum, C. uniflora, C. ursopedensis, C. venusta, C. viridis, C. visenda, C. wattiana, C. williamsii, C. wootoniana, C. ×atrorubens, C. ×bicknellii, C. ×coleae, C. ×collicola, C. ×disperma, C. ×dispessa, C. ×fretalis, C. ×incaedua, C. ×kelloggii, C. ×latebrosa, C. ×lucorum, C. ×rufula, C. ×sicca, C. ×vailiae

C. scabrida var. asperifolia, C. scabrida var. egglestonii, C. scabrida var. scabrida

Subordinate taxa

C. scabrida var. asperifolia, C. scabrida var. cyclophylla, C. scabrida var. egglestonii, C. scabrida var. scabrida

Synonyms

C. brainerdii var. scabrida

C. cyclophylla, C. brainerdii var. cyclophylla

Name authority

Sargent: Rhodora 3: 29. (1901)

(Sargent) Kruschke: Publ. Bot. Milwaukee Public Mus. 3: 170. (1965)

Web links

Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).

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