Crataegus mollis var. viburnifolia

(Sargent) Lance

Phytoneuron 2011–3: 6. 2011.

Conservation concernEndemic
Basionym: Crataegus viburnifolia Sargent Trees & Shrubs 2: 145. 1911
Synonyms: C. brazoria var. viburnifolia (Sargent) J. B. Phipps
Treatment appears in FNA Volume 9. Treatment on page 554. Mentioned on page 553, 555, 556.

Stems: twigs ± straight; thorns on twigs absent or few. Leaf-blades usually ± broadly ovate, lobes 2–4 per side, sinuses shallow (LII 8–15%), lobe apex subacute to obtuse. Stamens 20. Pomes yellow, to 25 mm diam.. 2n = 51.


Phenology: Flowering Mar; fruiting Sep–Oct.
Habitat: Rich alluvial soil, brushy habitats
Elevation: 10–50 m

Discussion

Variety viburnifolia occurs in southeastern Texas. The pure form of the variety is occasionally encountered. Yellow-fruited plants similar to var. viburnifolia with deeply incised leaves and salmon anthers are perhaps hybrids with Crataegus texana.

Selected References

None.

Lower Taxa

None.

"pubescent" is not a number.

mature +  and young +
glabrous +  and scabrous-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ivory-cream +
James B. Phipps +
(Sargent) Lance +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
truncate +  and cuneate +
Crataegus viburnifolia +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
less elliptic +  and more or less ovate or suborbiculate +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
oblong +  and linear-lanceolate +
adnate +  and distinct +
crowded +, scattered +  and alternate +
not +  and aggregated +
10–50 m +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 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 tan +
older +, old +, young +  and new +
glabrescent +  and tomentose +
Rich alluvial soil, brushy habitats +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
multiveined +, sessile-glandular +  and short-stipitate +
persistent +
glandular-serrate +  and glandular-laciniate +
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 (?) +
Pink (?) +  and White (?) +
free +  and distinct +
post-mature +
tomentose +
mature +  and young +
tomentose +  and glabrate +
Flowering Mar +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
tapered +  and suborbicular +
Phytoneuron +
not arillate +
persistent +
free +  and distinct +
erect-patent +
obsolescent +
triangular +
accrescent +
6 cm60 mm <br />0.06 m <br /> (?) +
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 +
C. brazoria var. viburnifolia +
Crataegus mollis var. viburnifolia +
Crataegus mollis +
variety +
7 cm70 mm <br />0.07 m <br /> (9 cm90 mm <br />0.09 m <br />) +
graying +  and blackish brown +
straight +
slender +  and stout +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
inconspicuous +
rough-corrugated +  and exfoliating +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
4 +  and 7 +
tree +  and shrub +