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6. Oyama (Nakai) N. H. Xia & C. Y. Wu, Fl. China. 7: 66. 2008.
天女花属 tian nü hua shu
Basionym: Magnolia sect. Oyama Nakai, Fl. Sylv. Kor. 20: 117. 1933; M. sect. Gophantera Dandy.
Trees or shrubs, deciduous. Bark usually gray, smooth or sometimes coarse and deeply furrowed. Twigs with annular stipular scar. Leaves at first distichous, later spirally arranged, folded in bud, erect when young; leaf blade membranous or papery, abaxially grayish green or glaucous and pubescent, margin entire. Flowers terminal, solitary, bisexual, often overtopped by a growing axillary vegetative bud and thus seemingly axillary. Peduncle slender, nodding but pendulous or erect at anthesis. Tepals 9-12, 3 per whorl, usually white, subequal. Stamens red, caducous; filaments flat; connective not exserted, apex obtuse or emarginate; anthers dehiscing introrsely. Gynoecium without a gynophore; carpels few to many, distinct; ovules usually 2 per carpel; styles curved outward, adaxially papillate. Fruit ellipsoid when mature, pendulous; mature carpels distinct, leathery or subwoody, dehiscing along dorsal sutures, persistent on torus, apex shortly beaked.
Four species: E and SE Asia; four species (two endemic) in China.
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| 1 |
Twigs purplish red or purplish brown; leaves widest toward base from middle; stipular scar nearly as long as petiole |
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(2) |
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Twigs pale grayish yellow or grayish brown; leaves widest toward apex from middle; stipular scar 1/2-2/3 as long as petiole |
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(3) |
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| 2 (1) |
Leaf blade oblong-ovate to elliptic-ovate, 6.5-12 cm, abaxially gray appressed villous; flowers pendulous during anthesis. |
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1 O. wilsonii |
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Leaf blade elliptic-ovate to ovate, 10-24 cm, abaxially reddish brown and with long curved trichomes; flowers slightly pendulous or erect during anthesis. |
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2 O. globosa |
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| 3 (1) |
Leaf blade obovate, secondary veins 9-13 on each side of midvein, abaxially pale yellow villous; stipular scar nearly 2/3 as long as petiole; flowers pendulous during anthesis. |
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3 O. sinensis |
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Leaf blade obovate to broadly obovate, secondary veins 6-8 on each side of midvein, abaxial surface with brown and white multicellular trichomes and scattered with golden yellow dots; stipular scar nearly 1/2 as long as petiole; flowers slightly pendulous during anthesis. |
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4 O. sieboldii |
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Lower Taxa
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