Crataegus (sect. Coccineae) ser. Punctatae

(Loudon) Rehder

Man. Cult. Trees ed. 2, 365. 1940.

Basionym: Crataegus sect. Punctatae Loudon Arbor. Frutic. Brit. 2: 818. 1838
Synonyms: Crataegus sect. Mexicanae Loudon Crataegus ser. Mexicanae (Loudon) Rehder
Treatment appears in FNA Volume 9. Treatment on page 541. Mentioned on page 516, 522, 525, 526, 527, 532, 536, 542, 552, 558.

Shrubs or trees, (30–) 50–80 dm, main trunk usually dominant. Stems: trunk bark buff to gray-brown, fibrous, checked into longitudinal plates, freshly exposed bark orangebrown; compound thorns on trunks and larger branches often present; twigs: new growth pubescent, 1-year old pale gray or grayish brown to tan or reddish-brown, older pale gray or gray; thorns on twigs absent or few to numerous, ± straight to slightly recurved, 2-years old gray to dark gray, rarely ± shiny dark-brown or black, older gray, usually slender, sometimes stout, 2–6 cm. Leaves: petiole short, length 10–25 (–50) % blade, pubescent, usually eglandular, sometimes sparsely sessile-glandular; blade broadly elliptic to narrowly obovate, oblanceolate (broader in C. jonesiae), or rhombic-elliptic, 3–6 (–8) cm, ± thin, base usually cuneate, lobes 0 or 1–4 (–9) per side, sinuses usually shallow, lobe apex usually acute, rarely obtuse, margins serrate to crenate except subentire base, venation craspedodromous, veins (4 or) 5–10 per side, apex subacute to obtuse, abaxial surface hairy, veins pubescent or not, adaxial hairy, especially young. Inflorescences 5–25-flowered; branches usually pubescent; bracteoles caducous, linear, membranous or ± herbaceous, margins glandular. Flowers (10–) 14–23 mm diam.; hypanthium usually pubescent, sometimes glabrous; sepals narrowly triangular, much shorter than petals, margins entire or glandular-serrate; stamens (5–) 10–20, anthers rose, pink-purple, cream, white, or yellow; styles 2–5. Pomes red, yellow, orange, scarlet, or burgundy, usually suborbicular, sometimes oblong or obovoid, (8–) 10–16 [–25] mm diam., usually punctate, glabrous or pubescent; flesh mealy; sepals persistent, reflexed or erect-patent; pyrenes 2–5.

Distribution

North America, Mexico, in Europe

Discussion

Species 5 (4 in the flora).

Series Punctatae consists of three widespread species (Crataegus collina, C. mexicana Mociño & Sessé ex de Candolle, and C. punctata) plus two local ones (C. spes-aestatum and C. jonesiae), all found in typical hawthorn habitats.

The common species are narrow-leaved with leaf lobes absent or obscure, usually 20 stamens, and 3–5 styles and pyrenes. Apparently no meaningful distinction exists between ser. Punctatae and ser. Mexicanae and the two have been united here. Crataegus jonesiae appears intermediate between ser. Punctatae and C. chrysocarpa (ser. Rotundifoliae).

Selected References

None.

Key

1 Flowers 18–23 mm diam.; leaf blades 4–7(–8) cm, broadly ovate to broadly rhombic-elliptic or nearly circular, equal to or less than 1.5 times as long as wide; pomes oblong or obovoid; stamens 10. Crataegus jonesiae
1 Flowers (10–)12–20(–22) mm diam.; leaf blades 3–7(–7.5) cm, narrowly obovate to oblanceolate or broadly elliptic, sometimes ± obtrullate or rhombic-obovate or -elliptic, 2–4 times as long as wide; pomes suborbicular or orbicular; stamens (5–)20 > 2
2 Leaves: veins 7–10 per side; inflorescences 10–25-flowered; sepal margins entire or subentire; pomes usually deep burgundy, sometimes scarlet, orange, or yellow; ne United States and adjacent Canada, in Appalachia at 1000–1800 m. Crataegus punctata
2 Leaves: veins 4–7 per side; inflorescences 5–12-flowered; sepal margins usually glandular-serrate; pomes usually orange, sometimes deep red to ruddy; se United States, in Appalachia only at lower elevations > 3
3 Leaf blades 3–5 cm (except to 7.5 cm in var. lettermani), rhombic-obovate or broadly elliptic, sometimes ± narrowly obovate, ± obtrullate, or broadly rhombic-elliptic, apices subacute to obtuse, lobes 0, or 1 or 2(or 3) per side, lobe apices acute to subacute, rarely obtuse; flowers (10–)13–18(–20) mm diam. Crataegus collina
3 Leaf blades 4–6 cm, broadly rhombic-elliptic, apices acuminate, lobes 3 or 4 per side, lobe apices acute; flowers 20–22 mm diam. Crataegus spes-aestatum
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
yellow +, white +, cream +, pink-purple +  and rose +
James B. Phipps +
(Loudon) Rehder +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
subentire +  and cuneate +
Crataegus sect. Punctatae +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
broadly elliptic +  and narrowly obovate oblanceolate or rhombic-elliptic +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
North America +, Mexico +  and in Europe +
not +  and aggregated +
1.4 cm14 mm <br />0.014 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
yellow +  and red or purplish +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
gray +, pale gray +, older +, grayish brown +  and tan or reddish-brown +
glabrous +  and pubescent +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
glandular-serrate +  and entire +
serrate +  and crenate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elliptic +  and circular +
0 (?) +  and 4 (?) +
free +  and distinct +
post-mature +
pubescent +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
burgundy +, scarlet +, orange +, yellow +  and red +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
pubescent +  and glabrous +
obovoid +, oblong +  and suborbicular +
Man. Cult. Trees ed. +
not arillate +
persistent +
free +  and distinct +
erect-patent +  and reflexed +
triangular +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus sect. Mexicanae +  and Crataegus ser. +
Crataegus (sect. Coccineae) ser. Punctatae +
Crataegus sect. Coccineae +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
gray +  and dark gray rarely more or less shiny dark-brown or black +
straight +
slender +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
few +  and numerous +
not +  and pubescent +
5 +  and 10 +
tree +  and shrub +