Crataegus spes-aestatum

J. B. Phipps

Novon 16: 382, fig. 1. 2006.

Common names: Hope-of-summers
Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 545. Mentioned on page 542.

Shrubs or trees, 30–60 dm. Stems: twigs: new growth canescent, 1-year old reddish-brown, older ± pale gray; thorns on twigs absent or few, straight or slightly curved, 1-year old silver-black, slender, 2.5–6 cm. Leaves: petiole 0.7–1.5 cm, length 18–25% blade, densely pubescent young, glabrescent, sparsely sessile-glandular; blade rhombic-elliptic, 4–6 cm (3–4 cm at anthesis), 1.5–2 times as long as wide, base cuneate, lobes 3 or 4 per side, lobe apex acute, margins serrate, teeth gland-tipped, veins 4 or 5 per side, apex acuminate, abaxial surface sparsely pubescent, densely pubescent on veins young, adaxial scabrous-pubescent young. Inflorescences 6–12-flowered; branches densely canescent; bracteoles membranous or ± herbaceous, margins glandular. Flowers 20–22 mm diam.; hypanthium canescent; sepal margins glandular-serrate, abaxially sparsely pubescent; stamens 20, anthers yellow or cream; styles 5. Pomes red, suborbicular, 10 mm diam. (dry), glabrous, short-pubescent at base and apex; sepals ± eroded (in specimen seen); pyrenes 3–5.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Thickets, hills, dry open woods, alluvial streambanks
Elevation: 100–200 m

Discussion

Of conservation concern.

Crataegus spes-aestatum is known only from southern Illinois and counties bordering the Mississippi River in southern Missouri. It is similar to C. collina and has not been seen with certainty since the 1930s.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus spes-aestatum"
scabrous-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
cream +  and yellow +
James B. Phipps +
J. B. Phipps +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
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 +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Hope-of-summers +
Ill. +  and Mo. +
not +  and aggregated +
100–200 m +
2 cm20 mm <br />0.02 m <br /> (2.2 cm22 mm <br />0.022 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 />) +
pale gray +  and reddish-brown +
older +, old +  and new +
Thickets, hills, dry open woods, alluvial streambanks +
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 +
pubescent +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
10 cm100 mm <br />0.1 m <br /> (?) +
short-pubescent +  and glabrous +
suborbicular +
not arillate +
persistent +
free +  and distinct +
erect-patent +  and reflexed +
triangular +
1-50-flowered +  and few-leaved +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus sect. Mexicanae +  and Crataegus ser. +
Crataegus spes-aestatum +
Crataegus (sect. Coccineae) ser. Punctatae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
silver-black +
curved +  and straight +
slender +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
not +  and pubescent +
5 +  and 4 +
tree +  and shrub +