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aubépine scabride, rough hawthorn, scabrous hawthorn

Habit Shrubs, 30–50 dm. Shrubs, 10–40 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.

twigs: new growth reddish green, glabrous, 1-year old dull reddish brown, 2-years old dark gray, older ashy gray;

thorns on twigs absent or few to several, straight, 2-years old nearly black, fine, 3 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.

petiole 1 mm wide, length 60% blade, glabrous, glandular;

blade ± elliptic or rhombic-elliptic, sometimes ± obtrullate, 2.5–5 cm, thin, base cuneate, lobes 0, or 1 or 2 per side in distal 1/2, sinuses very shallow, lobe apex acute, margins serrate, teeth gland-tipped, especially near base, veins 4 per side, apex acuminate, surfaces glabrous, abaxial veins sparsely hairy young.

Inflorescences

6–10-flowered;

branches glabrous or villous.

3–8-flowered;

branches glabrous;

bracteole margins short-stipitate-glandular.

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.

15–18 mm diam.;

hypanthium glabrous;

sepals 5 mm, margins glandular-serrate;

stamens 10, anthers pale purple;

styles 2–4.

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.

red to orange-red, obovoid or oblong, 10–12 mm diam., glabrous;

sepals on collar, ± reflexed;

pyrenes 2–4.

2n

= 51.

Crataegus scabrida

Crataegus rubella

Phenology Flowering late Apr–early May; fruiting Sep–Oct.
Habitat Woods and thickets
Elevation 0–300 m (0–1000 ft)
Distribution
from FNA
CT; MA; ME; MI; NH; NY; VA; VT; WI; NB; NS; ON; QC
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; DE; GA; KY; LA; MD; MO; NC; SC; TN; VA
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.)

Crataegus rubella is wide-ranging and common in the southeastern United States. The species is one of the more distinct taxa of ser. Intricatae, with its somewhat narrow leaves with distinctively shaped lobes. Crataegus straminea, somewhat arbitrarily synonymized here, represents uncommon intermediates with C. communis and shares the broader leaf shape with the latter but has two to three lobes per side of the form of C. rubella.

(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. 589.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Macracanthae > ser. Anomalae Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Coccineae > ser. Intricatae
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. 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. rubribracteolata, C. saligna, C. sargentii, C. scabrida, 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
Subordinate taxa
C. scabrida var. asperifolia, C. scabrida var. cyclophylla, C. scabrida var. egglestonii, C. scabrida var. scabrida
Synonyms C. brainerdii var. scabrida C. apposita, C. intricata var. rubella, C. intricata var. straminea, C. straminea
Name authority Sargent: Rhodora 3: 29. (1901) Beadle: Bot. Gaz. 30: 344. (1900)
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