Crataegus (sect. Sanguineae) ser. Altaicae

J. Bot. Res. Inst. Texas 3: 243. 2009.

Introduced
Treatment appears in FNA Volume 9. Treatment on page 515.

[Shrubs or] trees, 30–60 dm. Stems: 1-year old twigs deep red or purple-brown, shining, older dull or dark gray. Leaves deciduous; petiole length 1/5–1/3 blade; blade ± ovate, 5–9 cm, base truncate to broadly cuneate, lobes 3–5 per side, sinuses shallow to deep (if deep, usually only proximal 1–2), margins sharply serrate, venation craspedodromous, veins 4 or 5 per side, to lobes and deeper sinuses, apex acute. Inflorescences 20–50-flowered; branches often warty; bracteoles absent or present, caducous, linear to elliptic, membranous, margins glandular; basal branches subtended by persistent, chlorophyllous, falcate, stipuliform, glandular bracteoles. Flowers 12–15 mm diam.; sepals triangular-ovate, short, entire or 1-toothed or 2-toothed; filament length usually 2 times petals; styles 4 or 5. Pomes yellow or orange [to red or reddish], suborbicular; sepals reflexed; pyrenes 4 or 5.

Distribution

Introduced; Wash., c Asia

Discussion

Species 2 or 3 (1 in the flora).

Series Altaicae is closely related to ser. Sanguineae; its glabrous inflorescences, unusual fruit color, and distribution combine to distinguish it.

Selected References

None.

Lower Taxa

"timespetals" is not declared as a valid unit of measurement for this property.

0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
(Zabel ex Rehder) C. K. Schneider +
stipuliform +  and falcate +
compound +  and simple +
opposite +  and alternate +
truncate +  and broadly cuneate +
Crataegus unranked +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
linear +  and elliptic +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Wash. +  and c Asia +
not +  and aggregated +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 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 />) +
stipuliform +  and falcate +
tomentose +  and glabrous +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
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 +
1/5 +  and 1/3 +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
orange +  and yellow +
suborbicular +
J. Bot. Res. Inst. Texas +
not arillate +
persistent +
free +  and distinct +
2-toothed +, 1-toothed +, entire +  and triangular-ovate +
1-50-flowered +  and few-leaved +
shallow +  and deep +
Introduced +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus (sect. Sanguineae) ser. Altaicae +
Crataegus sect. Sanguineae +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
1 +  and few +
dark gray +, purple-brown +, red +  and deep +
determinate +
older +  and old +
dull +  and shining +
5 +  and 4 +