| Quercus x macdonaldii | |
| Author | Greene & Kellogg 1889 Ill. W. Amer. Oaks 25 |
| Synonyms | pacifica
x lobata = dumosa var. macdonaldii (Greene & Kellogg) Jepson 1923 = dumosa subsp macdonaldii (Greene & Kellogg) A.Camus 1935 |
| Local names | island scrub oak |
| Range | Santa Cruz, Santa Rosa and Santa Catalina Islands at < 600 m; |
| Growth habit | 2-15 m |
| Leaves | deciduous 4-7 cm long, both ends rounded, with 2-4 shallow lobes, thick, stiff, tomentose beneath; |
| Flowers | |
| Fruits | acorn 2-3 cm, enclosed for 1/3 in hairy cup, maturing in 1 year; |
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Bark, twigs and |
scaly and greyish bark; tomentose twigs; |
| Hardiness zone, habitat | |
| Miscellaneous | --
Absent on american mainland; -- Named after James Mac Donald who put up the money for the publication of "Illustration of West American Oaks" by Alb. Kellogg and Ed. Greene in 1889; -- Different from Q.lobata by shallower leaves sinus, smaller and sharper lobes; -- Fixed hybrid; |
| Subspecies and varieties |
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| Pictures |
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