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Castlegar hawthorn, Castlegar hawthorne, hawthorn

Habit Shrubs, 25–50 dm. Shrubs or trees, 30–60 dm, branches ± weeping.
Stems

erect;

branches spreading; 1-year old twigs brown;

thorns on twigs usually branched, some paired or in triads, straight to slightly recurved, dark brown with blackish tip young, 2–3 cm.

twigs: new growth sparsely to densely spreading-pubescent, 1-year old tawny to reddish brown, 2-years old dark gray;

thorns on twigs usually numerous, straight to slightly decurved, 2-years old shiny blackish gray, ± fine to ± stout, 2–4.5 cm.

Leaves

petiole 0.7–1.5 cm, pubescent, eglandular;

blade oblanceolate to ovate-rhombic, 3.5–6 cm, lobes 3 or 4 per side, sinuses shallow to deep, lobe apex usually acute, margins serrate, teeth apices finally glandular young, venation craspedodromous, veins 4 or 5 per side, apex broadly triangular, abaxial surface sparsely hairy or glabrous except on veins, adaxial conspicuously appressed-pubescent young, glabrescent except on midvein.

petiole length 25–33% blade, ± pilose young, glandular;

blade dark green mature adaxially, narrowly obovate to obovate, 2–4.5 cm, thin, slightly coriaceous, base abruptly tapered, lobes 0, or 1 or 2 per side distally, obscure, lobe apex obtuse to subacute, margins ± coarsely glandular-serrate, veins (1 or)2–4 per side, apex often ± cuspidate, adaxially shiny mature, surfaces glabrous, veins sparsely pubescent;

on extension shoots broadly elliptic to ± orbiculate, larger, often slightly incised, strongly serrate.

Inflorescences

12–20-flowered;

branches sparsely to densely pubescent;

bracteole margins stipitate-glandular.

3–6-flowered;

branches sparsely to moderately pilose;

bracteoles caducous, linear, margins glandular.

Flowers

12 mm diam.;

hypanthium pubescent or glabrous;

sepals triangular, 3 mm, margins remotely glandular-serrate;

stamens 10, anthers pink;

styles 3 or 4.

15–18(–25) mm diam.;

hypanthium sparsely pubescent;

sepals narrowly triangular, 4–5 mm, margins glandular-serrate, adaxially sparsely hirsute;

anthers pale yellow;

styles 3(–5).

Pomes

crimson (mid Aug) turning to reddish plum or, ultimately, blackish purple, orbicular, ± oblate (recessed at junction with pedicel), 10 mm diam., sparsely pilose;

sepals reflexed, apex obtuse;

pyrenes 3 or 4, sides usually pitted.

orange-red to red, suborbicular, 8–15 mm diam., glabrous;

sepals spreading, 7 mm;

pyrenes 3(–5).

2n

= 68.

Crataegus castlegarensis

Crataegus florens

Phenology Flowering May–Jun; fruiting Sep–Oct. Flowering Mar–Apr; fruiting Aug–Sep.
Habitat Mesic brush Brush on sand plains
Elevation 300–1200 m (1000–3900 ft) 0–200 m (0–700 ft)
Distribution
from FNA
CA; ID; MT; OR; UT; WA; WY; AB; BC; SK
[WildflowerSearch map]
from FNA
AL; FL; GA; LA; MS; NC; SC
Discussion

Crataegus castlegarensis occurs from around the northern Okanagan, British Columbia, to the northern California Coast Ranges, to northwestern Montana, and the Rocky Mountains to northeast of Salt Lake City, Utah. The species occurs also in the Cypress Hills of Alberta and Saskatchewan; it is found in habitats similar to those of C. douglasii and is at least as abundant as that species in a number of parts of its range.

Crataegus castlegarensis is readily recognized by a combination of hairy inflorescence branches, pomes more or less orbicular, crimson or burgundy (with irregular earlier ripening) around the third week of August, soon becoming purple, often when nearby C. douglasii is already black, as well as a tendency to possess thorns on the young twigs branched at the base to become double, triple, or even sometimes quadruple. Such multiple thorns, though sometimes abundant on a bush, are more often few and may require searching for. Inflorescence pubescence, as in other species with this characteristic, may become sparse by fruiting. Crataegus castlegarensis is most similar to C. douglasii; its fruit is usually more orbicular, even oblately so, than is normal in that species, sometimes even with a recessed junction to the pedicel like an apple.

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

Crataegus florens occurs mainly from central Mississippi to the Carolinas and extreme northern Florida; it is common in central Alabama and is disjunct in West Feliciana Parish, Louisiana. The species may occur in more mesic habitats than other members of ser. Lacrimatae.

The type form of Crataegus florens has the smallest, least strongly serrate leaves, veins 2 or 3 per side, and largest flowers, but the circumscription is here expanded to include forms of smaller flower dimensions and with larger, more strongly serrate leaves, including those with 3 or 4 veins per side. As such, C. florens is a fairly common and striking plant with its glossy, deep green leaves, thus superficially resembling members of ser. Crus-galli except for the strongly flexuous twigs. Except for its type form, which is uncommon, it flowers before most other sympatric members of ser. Lacrimatae. Differences from C. attrita, to which it is most similar, and C. teres are given in the key and discussed under those species.

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

Source FNA vol. 9, p. 513. FNA vol. 9, p. 628.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Douglasia > ser. Douglasianae Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Coccineae > ser. Lacrimatae
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. 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. 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
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. 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. 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
Synonyms C. alabamensis var. florens
Name authority J. B. Phipps & O'Kennon: Sida 20: 121, figs. 3, 4. (2002) Beadle: Biltmore Bot. Stud. 1: 94. (1902)
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