Magnolia ashei

Weatherby

Rhodora 28: 35. 1926.

Common names: Ashe's magnolia
Conservation concernEndemicIllustrated
Synonyms: Magnolia macrophylla subsp. ashei (Weatherby) Spongberg Magnolia macrophylla var. ashei (Weatherby) D.L. Johnson
Treatment appears in FNA Volume 3.
Revision as of 07:37, 30 July 2020 by imported>Volume Importer
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Trees, deciduous, often multitrunked, to 10 (-12) m. Bark dark gray, smooth. Pith homogeneous. Twigs and foliar buds silky-pubescent. Leaves crowded in terminal whorl-like clusters; stipules 6-8 × 3-4 cm, abaxially pilose, glandular. Leaf-blade broadly elliptic to obovate-oblong, (17-) 25-46 (-56) × (10-) 15-30 (-40) cm, base truncate to deeply cordate or auriculate, apex acute to short-acuminate; surfaces abaxially chalky white or pale green to glaucous, pilose, adaxially deep green, glabrous. Flowers solitary or often in pairs on adjacent twigs, fragrant, 15-38 (-50) cm across; spathaceous bracts 2, outer bract abaxially rusty gray, inner bract glabrous; tepals creamy white, glandular, innermost whorl purple-blotched at base, outermost segments strongly reflexed, greenish; stamens 170-350, 13-20 mm; filaments white; pistils 20-50. Follicetums cylindric to nearly ovoid, 2.5-6.5 × 1.5-4 cm; follicles short-beaked, distally appressed silky-pubescent. Seeds lenticular to somewhat globose, 8-10 mm, aril orange-red. 2n=38.


Phenology: Flowering spring.
Habitat: Woodlands, ravines, and bluffs, coastal plain
Elevation: 0-50m

Discussion

Of conservation concern.

Magnolia ashei, the rarest species of Magnolia in the flora, is limited to six counties in the Florida panhandle; it is in danger of extirpation because of habitat disturbance. Magnolia ashei differs from M. macrophylla in being a smaller, often multitrunked tree with smaller leaves, fewer stamens and pistils, smaller seeds, smaller stipules, filiform trichomes, and smaller, nearly glabrous, cylindric follicetums. The flowers are often borne in pairs. Magnolia ashei flowers at an early age (three to four years from seed); it is a desirable small tree in cultivation.

Selected References

None.

Lower Taxa

None.

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

... more about "Magnolia ashei"
latrorse +  and introrse +
acute +  and short-acuminate +
orange-red +
Frederick G. Meyer +
Weatherby +
truncate +  and deeply cordate or auriculate +
Ashe's magnolia +
38 cm380 mm <br />0.38 m <br /> (50 cm500 mm <br />0.5 m <br />) +
fragrant +
15 cm150 mm <br />0.15 m <br /> (38 cm380 mm <br />0.38 m <br />) +
silky-pubescent +
2.5 cm25 mm <br />0.025 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
cylindric +  and nearly ovoid +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
coalescent +
silky-pubescent +
Woodlands, ravines, and bluffs, coastal plain +
46 cm460 mm <br />0.46 m <br /> (56 cm560 mm <br />0.56 m <br />) +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
25 cm250 mm <br />0.25 m <br /> (46 cm460 mm <br />0.46 m <br />) +
broadly elliptic +  and obovate-oblong +
petiolate +  and simple +
Flowering spring. +
sessile +  and stalked +
concrescent +  and free +
diaphragmed +
homogeneous +
indehiscent +
persistent +
annular +
globose;lenticular to somewhat +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Conservation concern +, Endemic +  and Illustrated +
hypogynous +
1.3 cm13 mm <br />0.013 m <br /> (2 cm20 mm <br />0.02 m <br />) +
decurrent +
adnate +  and free +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
green +, pale green +  and chalky white +
glabrous;pilose;glaucous +
Magnolia macrophylla subsp. ashei +  and Magnolia macrophylla var. ashei +
Magnolia ashei +
Magnolia +
species +
creamy white +
deciduous +
elongate +
silky-pubescent +
1,000 cm10,000 mm <br />10 m <br /> (1,200 cm12,000 mm <br />12 m <br />) +