Crataegus castlegarensis |
Crataegus turnerorum |
|
---|---|---|
Castlegar hawthorn, Castlegar hawthorne, hawthorn |
scalp creek hawthorn, turner's hawthorn |
|
Habit | Shrubs, 25–50 dm. | Shrubs or trees, 20–60 dm. |
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. |
trunk bark gray, plated; twigs straight or slightly flexuous, new growth glabrous, 1-year old light brown, 2-years old shiny, older pale ashy gray; thorns on twigs numerous, straight to slightly recurved, 2-years old black, slender, 2–5 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. |
deciduous; petiole 25–33% length of blade, pubescent, eglandular; blade broadly elliptic to ovate or narrowly obovate, 2–3 cm, thin, base broadly cuneate, lobes 2 or 3 per side, sinuses very shallow, lobe apex subacute to broadly acute, margins serrate except near base, teeth small, acute or subacute, eglandular, venation craspedodromous, veins 3 or 4 per side, apex broadly acute, abaxial surface glabrous, adaxial pubescent young, glabrescent. |
Inflorescences | 12–20-flowered; branches sparsely to densely pubescent; bracteole margins stipitate-glandular. |
3–12-flowered, flattish, convex panicles; branches sparsely pubescent or glabrous; bracteoles caducous, few, very narrowly elliptic, membranous, 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 mm diam.; hypanthium glabrous; sepals narrowly triangular, ca. 2/3 length of petals, margins ± entire with some stipitate glands to glandular-serrate, adaxial surface pubescent; stamens 15, anthers purple; 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. |
red, suborbicular (slightly oblate), 10–13 mm diam., glabrous; flesh mealy; sepals or sepal remnants spreading; pyrenes 3–5, dorsally grooved, sides plane. |
2n | = 68. |
|
Crataegus castlegarensis |
Crataegus turnerorum |
|
Phenology | Flowering May–Jun; fruiting Sep–Oct. | Flowers Apr; fruiting Sep–Oct. |
Habitat | Mesic brush | Brush, dwarf oak scrub, stream banks |
Elevation | 300–1200 m (1000–3900 ft) | 300–600m (1000–2000ft) |
Distribution |
CA; ID; MT; OR; UT; WA; WY; AB; BC; SK
|
TX |
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 turnerorum is a distinctive and little-varying taxon recorded from at least seven counties in the Edwards Plateau of Texas. It is placed here as it is unassigned to series and may perhaps be a hybrid between the partly sympatric C. greggiana, than which it is much less hairy, with a more or less glabrous small-leaved taxon such as the partly sympatric C. viridis var. desertorum or even a member of ser. Tenuifoliae as discussed in J. B. Phipps (1990). Crataegus turnerorum sometimes has slightly flexuous twigs, which could credibly be inherited from a C. viridis var. desertorum ancestor. However, the nearest existing locality for the ser. Tenuifoliae option is montane New Mexico, even though the Edwards Plateau harbors many woody species with such typically eastern-northeastern ranges as ser. Tenuifoliae. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 513. | FNA vol. 9, p. 642. |
Parent taxa | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus > sect. Douglasia > ser. Douglasianae | Rosaceae > subfam. Amygdaloideae > tribe Maleae > Crataegus |
Sibling taxa | ||
Synonyms | C. secreta | |
Name authority | J. B. Phipps & O'Kennon: Sida 20: 121, figs. 3, 4. (2002) | Enquist: Phytologia 68: 298, fig. 1. (1990) |
Web links |
|